CN110441488B - Method and device for judging water quality of ocean ecological red line to reach standard - Google Patents
Method and device for judging water quality of ocean ecological red line to reach standard Download PDFInfo
- Publication number
- CN110441488B CN110441488B CN201910583238.4A CN201910583238A CN110441488B CN 110441488 B CN110441488 B CN 110441488B CN 201910583238 A CN201910583238 A CN 201910583238A CN 110441488 B CN110441488 B CN 110441488B
- Authority
- CN
- China
- Prior art keywords
- water quality
- area
- ocean current
- red line
- interpolation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
Abstract
The invention discloses a method and a device for judging whether the water quality of an ocean ecological red line reaches the standard, which belong to the field of ocean water quality monitoring, and comprise the following steps: performing interpolation operation according to the acquired water quality indexes of all the stations to obtain a water quality index spatial distribution map of the whole area, and cutting by using the marine ecological red line boundary vector to obtain a water quality index spatial distribution map of a marine ecological red line range; classifying the water quality of each interpolation point in the water quality index space distribution map within the marine ecological red line range according to the seawater quality evaluation standard to obtain space distribution maps of different water quality categories; carrying out area statistics on the spatial distribution maps of different water quality types, and calculating the proportion of the spatial distribution areas of the different water quality types to the area of the marine ecological red line; and judging whether the water quality of the ocean red line reaches the standard according to the proportion. The invention avoids the defect that the water quality of a single station in the traditional method cannot accurately reflect the overall condition of the surrounding seawater quality, and reflects the overall water quality condition of the sea area to a certain extent.
Description
Technical Field
The invention relates to the field of ocean water quality monitoring, in particular to a method and a device for judging whether the ocean ecological red line water quality reaches the standard.
Background
Currently, with economic development, the pressure on marine ecosystems is increasingly remarkable due to the influence of multiple factors such as coastal development, population gathering, resource environment load and the like. Monitoring shows that the marine ecosystem of partial areas has the tendency of ecological function degradation and ecological environment quality reduction because the marine ecosystem can not be effectively protected. In order to maintain national ecological safety and promote sustainable development of coastal socioeconomic performance, China establishes a marine ecological red line system.
The marine ecological red line, also called as a sea carmine line area, refers to a control line for forming a geographical area boundary line and related management indexes by dividing an area which has special important ecological functions and must be forcibly and strictly protected in a marine ecological space range into a key control area. The marine ecological redline area covers an important marine ecological functional area, a marine ecological sensitive area and a marine ecological fragile area, and the protection types comprise an important estuary, an important coastal wetland, a special protection island, a marine protection area, natural landscapes and historical cultural trails, a rare or endangered species centralized distribution area, an important coastal tourism area, an important sandy shoreline and adjacent sea areas, a sand source protection sea area, an important fishery water area, a mangrove forest, a coral reef, a seaweed bed and the like.
Seawater quality (water quality category) is an important index for marine ecological red line control. The water quality categories (water quality grades) are classified into a first category, a second category, a third category and a fourth category, which respectively represent that the water quality is excellent, the water quality is good, the water quality is general and the water quality is poor.
Water quality indicators (measured concentrations of certain contaminants) are typically used to determine water quality categories. The traditional calculation method determines the water quality category by depending on the standard reaching proportion of each water quality index of different sites, and the specific process is as follows: if N sites exist, wherein the water quality indexes of M sites reach the standard (whether the water quality indexes reach the standard is determined according to the seawater quality evaluation standard), M is 100%/N is calculated, and if the ratio is within the range of the first-class water quality evaluation standard, the water body is of one class; if the water quality is within the range of the second-class water quality evaluation standard, the water quality belongs to the second class; and the others are analogized in turn. According to the method, the water quality of the evaluation sea area can be generally evaluated and classified.
However, the traditional water quality evaluation method has certain defects, because the water quality index for evaluation is only an individual station, due to the mobility and the flexibility of the water body, the individual station cannot accurately reflect the overall water quality condition (replacing points) of the water body near the station more often, and the evaluation result has certain one-sidedness.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method and a device for judging whether the water quality of the marine ecological red line reaches the standard, which can avoid the defect that the water quality of a single station in the traditional method cannot accurately reflect the integral condition of the water quality of the surrounding seawater and reflect the integral water quality condition of the sea area to a certain extent.
The technical scheme provided by the invention is as follows:
a method for judging whether the water quality of marine ecological red lines reaches the standard comprises the following steps:
acquiring water quality indexes of all stations in an area including a marine ecological red line range;
carrying out interpolation operation according to the water quality indexes of all the stations to obtain a water quality index space distribution map of the whole area;
cutting the water quality index space distribution map of the whole area by using the marine ecological red line boundary vector to obtain a water quality index space distribution map of a marine ecological red line range;
classifying the water quality of each interpolation point in the water quality index space distribution map within the marine ecological red line range according to a seawater quality evaluation standard, and segmenting according to a classification result to obtain space distribution maps of different water quality categories;
carrying out area statistics on the spatial distribution maps of different water quality types to obtain spatial distribution areas of different water quality types;
calculating the proportion of the space distribution area of different water quality types to the area of the marine ecological red line;
and judging whether the ocean red line water quality reaches the standard or not according to the proportion of the space distribution area of different water quality types to the ocean ecological red line area.
Further, whether ocean red line water quality reaches the standard is judged according to the proportion of the space distribution area of different water quality categories to the ocean ecological red line area, and the method comprises the following steps:
calculating the sum of the proportions of the first-class and second-class spatial distribution areas of the water quality category in the area of the marine ecological red line;
and if the sum of the proportion of the first-class and second-class spatial distribution areas of the water quality category to the area of the marine ecological red line is more than or equal to 70%, judging that the marine red line water quality reaches the standard.
Further, the area statistics is carried out on the spatial distribution maps of different water quality categories to obtain the spatial distribution areas of different water quality categories, including:
respectively counting the number of interpolation points included in the spatial distribution maps of different water quality categories;
and calculating the spatial distribution areas of different water quality categories according to the number of the interpolation points and the sizes of the interpolation points.
Further, the interpolation operation includes:
acquiring an ocean current vector boundary, and dividing the whole area into an ocean current area and a non-ocean current area through the ocean current vector boundary;
and respectively carrying out interpolation according to the water quality indexes of all stations in the ocean current area and the non-ocean current area to respectively obtain the water quality index space distribution maps of the ocean current area and the non-ocean current area.
Further, the interpolation according to the water quality indexes of the stations in the ocean current area and the non-ocean current area respectively comprises:
performing linear interpolation according to the water quality indexes of all stations in the ocean current area to obtain the spatial distribution of the water quality indexes of all interpolation points in the ocean current area;
assigning the water quality index of the ocean current vector boundary by using the water quality index of an interpolation point which is closest to the ocean current vector boundary in the ocean current region to obtain the water quality index of the ocean current vector boundary;
and (3) taking the water quality index of the ocean current vector boundary as a boundary value, and carrying out interpolation by using a kriging interpolation algorithm according to the water quality index of each station in the non-ocean current area to obtain the water quality index spatial distribution of each interpolation point in the non-ocean current area.
The utility model provides an ecological red line quality of water up to standard decision maker in ocean, includes:
the water quality index acquisition module is used for acquiring water quality indexes of all stations in an area including a marine ecological red line range;
the interpolation module is used for carrying out interpolation operation according to the water quality indexes of all the stations to obtain a water quality index space distribution map of the whole area;
the cutting module is used for cutting the water quality index space distribution map of the whole area by using the marine ecological red line boundary vector to obtain the water quality index space distribution map of the marine ecological red line range;
the classification module is used for classifying the water quality of each interpolation point in the water quality index space distribution map within the marine ecological red line range according to the seawater quality evaluation standard and segmenting according to the classification result to obtain space distribution maps of different water quality categories;
the area calculation module is used for carrying out area statistics on the spatial distribution maps of different water quality types to obtain spatial distribution areas of different water quality types;
the proportion calculation module is used for calculating the proportion of the space distribution area of different water quality types to the area of the marine ecological red line;
and the judging module is used for judging whether the ocean red line water quality reaches the standard or not according to the proportion of the space distribution area of different water quality types to the ocean ecological red line area.
Further, the judging module includes:
the proportion calculation unit is used for calculating the sum of the proportions of the first-class and second-class spatial distribution areas of the water quality types in the area of the marine ecological red line;
and the judging unit is used for judging that the ocean red line water quality reaches the standard if the sum of the proportions of the first class and the second class of spatial distribution area of the water quality type in the ocean ecological red line area is more than or equal to 70%.
Further, the area calculation module includes:
the interpolation point counting unit is used for counting the number of interpolation points included in the spatial distribution maps of different water quality categories;
and the area calculation unit is used for calculating the spatial distribution areas of different water quality categories according to the number of the interpolation points and the sizes of the interpolation points.
Further, the interpolation module includes:
the dividing unit is used for acquiring an ocean current vector boundary and dividing the whole area into an ocean current area and a non-ocean current area through the ocean current vector boundary;
and the interpolation unit is used for respectively carrying out interpolation according to the water quality indexes of all stations in the ocean current area and the non-ocean current area to respectively obtain the water quality index space distribution maps of the ocean current area and the non-ocean current area.
Further, the interpolation unit includes:
the first interpolation subunit is used for performing linear interpolation according to the water quality indexes of all stations in the ocean current area to obtain the spatial distribution of the water quality indexes of all interpolation points in the ocean current area;
the assignment subunit is used for assigning the water quality index of the ocean current vector boundary by using the water quality index of the interpolation point closest to the ocean current vector boundary in the ocean current region to obtain the water quality index of the ocean current vector boundary;
and the second interpolation subunit is used for performing interpolation by using the water quality index of the ocean current vector boundary as a boundary value and applying a kriging interpolation algorithm according to the water quality index of each station in the non-ocean current area to obtain the water quality index spatial distribution of each interpolation point in the non-ocean current area.
The invention has the following beneficial effects:
according to the water quality indexes of different sites, interpolation operation is firstly carried out to obtain the overall spatial distribution condition of the water quality indexes, then interpolation pixels are divided according to a water quality evaluation standard, a water body is divided into different categories, the spatial distribution areas of the water quality pixels of the different categories are respectively calculated, then the proportion of the spatial distribution areas of the water quality of the pixels of the different categories to the area of an evaluation sea area is calculated, and the overall water quality condition of the sea area seawater is evaluated according to the proportion. The method can avoid the defect that the water quality of a single station in the traditional method cannot accurately reflect the overall condition of the surrounding seawater quality, and reflects the overall water quality condition of the sea area to a certain extent.
Drawings
FIG. 1 is a flow chart of the method for determining the water quality of the marine ecological red line reaches the standard;
FIG. 2 is a schematic diagram of the marine ecological red line water quality standard-reaching judgment device.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
On one hand, the invention provides a method for judging whether the quality of marine ecological red line water reaches the standard, as shown in figure 1, the method comprises the following steps:
step S100: and acquiring water quality indexes of all stations in an area including the marine ecological red line range.
The step is used for obtaining the water quality indexes of all sites in a certain area, and the area contains the marine ecological red line range to be evaluated.
The water quality index of the invention refers to the actually measured concentration of a certain pollutant, the type of the pollutant is selected according to the requirement, and the actually measured concentration of the pollutant is measured by a set site.
Step S200: and carrying out interpolation operation according to the water quality indexes of all the stations to obtain a water quality index space distribution map of the whole area.
The water quality index of each monitoring station is only used for monitoring the water quality of the station, and the traditional water quality category evaluation method is to use the water quality index of one station to represent the overall water quality condition of the area near the station (the area of the area near the station depends on the spacing distance between adjacent stations), and further use the water quality indexes of all stations to represent the water quality condition of the whole area (namely, the traditional method is a method replacing points). Due to the mobility and the disturbance of the water body, the station cannot accurately reflect the overall water quality condition of the water body near the station, so that the traditional evaluation result has certain one-sidedness.
The invention uses the water quality indexes of each station to carry out interpolation operation to obtain the water quality index of each interpolation point on the whole area (namely, the method of the invention is a surface substitution method), can avoid the defect that the water quality of a single station can not accurately reflect the whole condition of the water quality of the surrounding seawater in the traditional method, and reflects the whole water quality condition of the sea area to a certain extent.
Step S300: and cutting the water quality index space distribution map of the whole area by using the marine ecological red line boundary vector to obtain the water quality index space distribution map within the marine ecological red line range.
The step has the effect of cutting the marine ecological red line area, and the marine ecological red line area is a fixed area which is divided, so that the marine ecological red line boundary vector is used for cutting.
Step S400: and classifying the water quality of each interpolation point in the water quality index space distribution map within the marine ecological red line range according to the seawater quality evaluation standard, and segmenting according to the classification result to obtain space distribution maps of different water quality categories.
The seawater quality evaluation standard is an evaluation standard prescribed by the country or the place, if the water quality index (pollutant concentration) of a certain interpolation point does not exceed one type of standard index, the interpolation point is classified into one type, if the water quality index exceeds one type of standard index, the interpolation point is classified into two types, if the water quality index exceeds two types of standard indexes, the interpolation point is classified into three types, if the water quality index exceeds three types of standard indexes, the interpolation point is classified into four types (inferior three types). Then, the interpolation points of different categories are divided into different spatial distribution maps.
Step S500: and carrying out area statistics on the spatial distribution maps of different water quality types to obtain the spatial distribution areas of the different water quality types.
Step S600: and calculating the proportion of the space distribution area of different water quality types to the area of the marine ecological red line.
Step S700: and judging whether the ocean red line water quality reaches the standard or not according to the proportion of the space distribution area of different water quality types to the ocean ecological red line area. After the proportions of different types are calculated, whether the water quality reaches the standard or not can be judged according to the standard specified by the state or other organizations.
According to the water quality indexes of different sites, interpolation operation is firstly carried out to obtain the overall spatial distribution condition of the water quality indexes, then interpolation pixels are divided according to a water quality evaluation standard, a water body is divided into different categories, the spatial distribution areas of the water quality pixels of the different categories are respectively calculated, then the proportion of the spatial distribution areas of the water quality of the pixels of the different categories to the area of an evaluation sea area is calculated, and the overall water quality condition of the sea area seawater is evaluated according to the proportion. The method can avoid the defect that the water quality of a single station in the traditional method cannot accurately reflect the overall condition of the water quality of the surrounding seawater, and reflects the overall water quality condition of the sea area to a certain extent (in the face of substitution).
As a modification of the present invention, where a specific judgment criterion is given, step S700 includes:
step S710: and calculating the water quality type as the sum of the proportion of the first-class and second-class spatial distribution areas in the area of the marine ecological red line.
Step S720: and if the sum of the proportion of the first-class and second-class spatial distribution areas of the water quality category to the area of the marine ecological red line is more than or equal to 70%, judging that the marine red line water quality reaches the standard.
Further, step S500 includes:
step S510: and respectively counting the number of interpolation points included in the spatial distribution maps of different water quality categories.
Step S520: and calculating the spatial distribution areas of different water quality categories according to the number of the interpolation points and the sizes of the interpolation points.
Because one interpolation point represents the size of the determined real space, the spatial distribution area of different water quality categories can be calculated according to the number of the interpolation points and the size of the interpolation points. Then, the area of the marine ecological red line is determined, and the proportion can be calculated.
As another improvement, the present invention provides an interpolation method based on ocean current boundary partition, and specifically, the interpolation operation includes:
step S210: and acquiring an ocean current vector boundary, and dividing the whole area into an ocean current area and a non-ocean current area through the ocean current vector boundary.
Step S220: and respectively carrying out interpolation according to the water quality indexes of all stations in the ocean current area and the non-ocean current area to respectively obtain the water quality index spatial distribution maps of the ocean current area and the non-ocean current area, and combining the water quality index spatial distribution maps of the ocean current area and the non-ocean current area together to obtain the water quality index spatial distribution map of the whole area.
The distribution of water quality indexes of all points in the sea (particularly in a magenta line area) is not uniformly changed, and if one type of difference is carried out in the whole area, the difference of some parts is more accurate, and the difference of some parts has larger error. For example, under the influence of ocean currents, the changes of two sides (ocean current areas and non-ocean current areas) of an ocean current boundary are certainly not uniform, the changes at the ocean current boundary are large, if two stations are located at two sides of the ocean current boundary, the water quality indexes of the two stations are directly used for interpolation, and the water quality indexes of the interpolation points obtained through interpolation are inaccurate.
According to the characteristics of hydrodynamic force (ocean current) in the ocean red line area, the ocean red line area is divided into the ocean current area and the non-ocean current area, interpolation is respectively carried out on the ocean current area and the non-ocean current area through different interpolation methods, the water quality index spatial distribution maps of the ocean current area and the non-ocean current area are respectively obtained, the overall water quality index spatial distribution conditions of different hydrodynamic force areas in the ocean red line are obtained, and objective distribution of water quality in the ocean red line can be better reflected.
More specifically, the interpolation according to the water quality indexes of the stations in the ocean current area and the non-ocean current area (step S220) respectively comprises:
step S221: and performing linear interpolation according to the water quality indexes of all stations in the ocean current area to obtain the water quality index spatial distribution of all interpolation points in the ocean current area, namely the water quality index spatial distribution map of the ocean current area.
The change rules of the water quality indexes of all points in the ocean current area are basically consistent, and because the change rules of all points are in accordance with linear change due to the flow influence of ocean current, the linear interpolation is carried out in the ocean current area.
Step S222: and assigning the water quality index of the ocean current vector boundary by using the water quality index of the interpolation point closest to the ocean current vector boundary in the ocean current region to obtain the water quality index of the ocean current vector boundary.
And the water quality index of the ocean current vector boundary is assigned with the nearest interpolation point in the ocean current area, so that the assignment is accurate.
Step S223: and (3) taking the water quality index of the ocean current vector boundary as a boundary value, and carrying out interpolation by using a kriging interpolation algorithm according to the water quality index of each station in the non-ocean current area to obtain the water quality index spatial distribution of each interpolation point in the non-ocean current area, namely the water quality index spatial distribution map of the non-ocean current area.
The method takes the water quality index of the determined ocean current vector boundary as a boundary value, and uses the water quality indexes of all stations in the non-ocean current area to perform kriging interpolation, so that the spatial distribution of the water quality indexes of all interpolation points in the non-ocean current area can be more accurately obtained.
On the other hand, the invention provides a marine ecological red line water quality standard-reaching judging device, as shown in fig. 2, the device comprises:
and the water quality index acquisition module 10 is used for acquiring the water quality indexes of all the sites in the area including the marine ecological red line range.
And the interpolation module 20 is configured to perform interpolation operation according to the water quality indexes of the stations to obtain a water quality index spatial distribution map of the whole area.
And the cutting module 30 is used for cutting the water quality index space distribution map of the whole area by using the marine ecological red line boundary vector to obtain the water quality index space distribution map of the marine ecological red line range.
And the classification module 40 is used for classifying the water quality of each interpolation point in the water quality index spatial distribution map within the marine ecological red line range according to the seawater quality evaluation standard, and segmenting according to the classification result to obtain spatial distribution maps of different water quality categories.
And the area calculation module 50 is configured to perform area statistics on the spatial distribution maps of different water quality categories to obtain spatial distribution areas of different water quality categories.
And the proportion calculation module 60 is used for calculating the proportion of the space distribution area of different water quality types to the area of the marine ecological red line.
And the judging module 70 is used for judging whether the ocean red line water quality reaches the standard according to the proportion of the space distribution area of different water quality types to the ocean ecological red line area.
According to the water quality indexes of different sites, interpolation operation is firstly carried out to obtain the overall spatial distribution condition of the water quality indexes, then interpolation pixels are divided according to a water quality evaluation standard, a water body is divided into different categories, the spatial distribution areas of the water quality pixels of the different categories are respectively calculated, then the proportion of the spatial distribution areas of the water quality of the pixels of the different categories to the area of an evaluation sea area is calculated, and the overall water quality condition of the sea area seawater is evaluated according to the proportion. The method can avoid the defect that the water quality of a single station in the traditional method cannot accurately reflect the overall condition of the water quality of the surrounding seawater, and reflects the overall water quality condition of the sea area to a certain extent (in the face of substitution).
As an improvement of the present invention, the judging module includes:
and the proportion calculation unit is used for calculating the sum of the proportions of the first-class and second-class spatial distribution areas of the water quality types in the area of the marine ecological red line.
And the judging unit is used for judging that the ocean red line water quality reaches the standard if the sum of the proportions of the first class and the second class of spatial distribution area of the water quality type in the ocean ecological red line area is more than or equal to 70%.
Further, the area calculation module includes:
the interpolation point counting unit is used for counting the number of interpolation points included in the spatial distribution maps of different water quality categories;
and the area calculation unit is used for calculating the spatial distribution areas of different water quality categories according to the number of the interpolation points and the sizes of the interpolation points.
As another improvement of the present invention, the interpolation module includes:
and the dividing unit is used for acquiring the ocean current vector boundary and dividing the whole area into an ocean current area and a non-ocean current area through the ocean current vector boundary.
And the interpolation unit is used for respectively carrying out interpolation according to the water quality indexes of all stations in the ocean current area and the non-ocean current area to respectively obtain the water quality index space distribution maps of the ocean current area and the non-ocean current area.
According to the characteristics of hydrodynamic force (ocean current) in the ocean red line area, the ocean red line area is divided into the ocean current area and the non-ocean current area, interpolation is respectively carried out on the ocean current area and the non-ocean current area through different interpolation methods, the water quality index spatial distribution maps of the ocean current area and the non-ocean current area are respectively obtained, the overall water quality index spatial distribution conditions of different hydrodynamic force areas in the ocean red line are obtained, and objective distribution of water quality in the ocean red line can be better reflected.
More specifically, the interpolation unit includes:
and the first interpolation subunit is used for performing linear interpolation according to the water quality indexes of all the stations in the ocean current region to obtain the spatial distribution of the water quality indexes of all the interpolation points in the ocean current region.
And the assignment subunit is used for assigning the water quality index of the ocean current vector boundary by using the water quality index of the interpolation point closest to the ocean current vector boundary in the ocean current region to obtain the water quality index of the ocean current vector boundary.
And the second interpolation subunit is used for performing interpolation by using the water quality index of the ocean current vector boundary as a boundary value and applying a kriging interpolation algorithm according to the water quality index of each station in the non-ocean current area to obtain the water quality index spatial distribution of each interpolation point in the non-ocean current area.
The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method for judging whether the water quality of marine ecological red lines reaches the standard is characterized by comprising the following steps:
acquiring water quality indexes of all stations in an area including a marine ecological red line range;
carrying out interpolation operation according to the water quality indexes of all the stations to obtain a water quality index space distribution map of the whole area;
cutting the water quality index space distribution map of the whole area by using the marine ecological red line boundary vector to obtain a water quality index space distribution map of a marine ecological red line range;
classifying the water quality of each interpolation point in the water quality index space distribution map within the marine ecological red line range according to a seawater quality evaluation standard, and segmenting according to a classification result to obtain space distribution maps of different water quality categories;
carrying out area statistics on the spatial distribution maps of different water quality types to obtain spatial distribution areas of different water quality types;
calculating the proportion of the space distribution area of different water quality types to the area of the marine ecological red line;
judging whether the ocean red line water quality reaches the standard or not according to the proportion of the space distribution area of different water quality types to the ocean ecological red line area;
wherein the interpolation operation comprises:
acquiring an ocean current vector boundary, and dividing the whole area into an ocean current area and a non-ocean current area through the ocean current vector boundary;
and respectively carrying out interpolation according to the water quality indexes of all stations in the ocean current area and the non-ocean current area to respectively obtain the water quality index space distribution maps of the ocean current area and the non-ocean current area.
2. The method for determining whether the quality of the marine ecological red line water reaches the standard according to the proportion of the spatial distribution area of different water quality categories to the area of the marine ecological red line water, which is disclosed by claim 1, comprises the following steps:
calculating the sum of the proportions of the first-class and second-class spatial distribution areas of the water quality category in the area of the marine ecological red line;
and if the sum of the proportion of the first-class and second-class spatial distribution areas of the water quality category to the area of the marine ecological red line is more than or equal to 70%, judging that the marine red line water quality reaches the standard.
3. The method for determining whether the quality of the marine ecological red line water meets the standard according to claim 1, wherein the area statistics is performed on the spatial distribution maps of different water quality types to obtain the spatial distribution areas of the different water quality types, and the method comprises the following steps:
respectively counting the number of interpolation points included in the spatial distribution maps of different water quality categories;
and calculating the spatial distribution areas of different water quality categories according to the number of the interpolation points and the sizes of the interpolation points.
4. The method for determining the water quality of the marine ecological red line reaching the standard according to any one of claims 1 to 3, wherein the interpolation according to the water quality indexes of the stations in the ocean current area and the non-ocean current area respectively comprises the following steps:
performing linear interpolation according to the water quality indexes of all stations in the ocean current area to obtain the spatial distribution of the water quality indexes of all interpolation points in the ocean current area;
assigning the water quality index of the ocean current vector boundary by using the water quality index of an interpolation point which is closest to the ocean current vector boundary in the ocean current region to obtain the water quality index of the ocean current vector boundary;
and (3) taking the water quality index of the ocean current vector boundary as a boundary value, and carrying out interpolation by using a kriging interpolation algorithm according to the water quality index of each station in the non-ocean current area to obtain the water quality index spatial distribution of each interpolation point in the non-ocean current area.
5. The utility model provides an ecological red line quality of water decision maker up to standard of ocean which characterized in that includes:
the water quality index acquisition module is used for acquiring water quality indexes of all stations in an area including a marine ecological red line range;
the interpolation module is used for carrying out interpolation operation according to the water quality indexes of all the stations to obtain a water quality index space distribution map of the whole area;
the cutting module is used for cutting the water quality index space distribution map of the whole area by using the marine ecological red line boundary vector to obtain the water quality index space distribution map of the marine ecological red line range;
the classification module is used for classifying the water quality of each interpolation point in the water quality index space distribution map within the marine ecological red line range according to the seawater quality evaluation standard and segmenting according to the classification result to obtain space distribution maps of different water quality categories;
the area calculation module is used for carrying out area statistics on the spatial distribution maps of different water quality types to obtain spatial distribution areas of different water quality types;
the proportion calculation module is used for calculating the proportion of the space distribution area of different water quality types to the area of the marine ecological red line;
the judging module is used for judging whether the ocean red line water quality reaches the standard or not according to the proportion of the space distribution area of different water quality types to the ocean ecological red line area;
wherein the interpolation module comprises:
the dividing unit is used for acquiring an ocean current vector boundary and dividing the whole area into an ocean current area and a non-ocean current area through the ocean current vector boundary;
and the interpolation unit is used for respectively carrying out interpolation according to the water quality indexes of all stations in the ocean current area and the non-ocean current area to respectively obtain the water quality index space distribution maps of the ocean current area and the non-ocean current area.
6. The marine ecological red line water quality standard-reaching judgment device according to claim 5, wherein the judgment module comprises:
the proportion calculation unit is used for calculating the sum of the proportions of the first-class and second-class spatial distribution areas of the water quality types in the area of the marine ecological red line;
and the judging unit is used for judging that the ocean red line water quality reaches the standard if the sum of the proportions of the first class and the second class of spatial distribution area of the water quality type in the ocean ecological red line area is more than or equal to 70%.
7. The marine ecological red line water quality standard-reaching judgment device according to claim 5, wherein the area calculation module comprises:
the interpolation point counting unit is used for counting the number of interpolation points included in the spatial distribution maps of different water quality categories;
and the area calculation unit is used for calculating the spatial distribution areas of different water quality categories according to the number of the interpolation points and the sizes of the interpolation points.
8. The marine ecological red line water quality standard-reaching judgment device according to any one of claims 5 to 7, wherein the interpolation unit comprises:
the first interpolation subunit is used for performing linear interpolation according to the water quality indexes of all stations in the ocean current area to obtain the spatial distribution of the water quality indexes of all interpolation points in the ocean current area;
the assignment subunit is used for assigning the water quality index of the ocean current vector boundary by using the water quality index of the interpolation point closest to the ocean current vector boundary in the ocean current region to obtain the water quality index of the ocean current vector boundary;
and the second interpolation subunit is used for performing interpolation by using the water quality index of the ocean current vector boundary as a boundary value and applying a kriging interpolation algorithm according to the water quality index of each station in the non-ocean current area to obtain the water quality index spatial distribution of each interpolation point in the non-ocean current area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910583238.4A CN110441488B (en) | 2019-07-01 | 2019-07-01 | Method and device for judging water quality of ocean ecological red line to reach standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910583238.4A CN110441488B (en) | 2019-07-01 | 2019-07-01 | Method and device for judging water quality of ocean ecological red line to reach standard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110441488A CN110441488A (en) | 2019-11-12 |
| CN110441488B true CN110441488B (en) | 2020-07-07 |
Family
ID=68429365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910583238.4A Active CN110441488B (en) | 2019-07-01 | 2019-07-01 | Method and device for judging water quality of ocean ecological red line to reach standard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110441488B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110942206B (en) * | 2019-12-05 | 2022-04-08 | 浙江大学 | Method for predicting position of water supply boundary zone of pipe network |
| CN111274918B (en) * | 2020-01-17 | 2020-11-10 | 生态环境部卫星环境应用中心 | River dryout and cutoff monitoring method and device based on multi-source remote sensing image |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063484A (en) * | 1992-06-23 | 1994-01-11 | Hitachi Ltd | Estimating method of water quality of primary cooling system of reactor |
| JP2010191632A (en) * | 2009-02-17 | 2010-09-02 | Nec Corp | Data processing apparatus, data extraction method, and program |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390248A (en) * | 2013-08-08 | 2013-11-13 | 牟林 | Method for assessing tide energy resource through numerical simulation of sea model |
| CN107045053B (en) * | 2017-06-19 | 2019-09-24 | 河海大学 | A kind of surface water quality overall evaluation system based on controllable standard |
-
2019
- 2019-07-01 CN CN201910583238.4A patent/CN110441488B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063484A (en) * | 1992-06-23 | 1994-01-11 | Hitachi Ltd | Estimating method of water quality of primary cooling system of reactor |
| JP2010191632A (en) * | 2009-02-17 | 2010-09-02 | Nec Corp | Data processing apparatus, data extraction method, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110441488A (en) | 2019-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110441488B (en) | Method and device for judging water quality of ocean ecological red line to reach standard | |
| CN107220521A (en) | A kind of static data acquisition methods for Pollution From Ships thing Emission amount calculation | |
| CN112506972B (en) | User resident area positioning method and device, electronic equipment and storage medium | |
| CN109448442A (en) | The efficient monitoring method of more foul danger levels in a kind of sea area | |
| CN111428916B (en) | Navigation path planning method for rescue vessel at sea | |
| CN112214721B (en) | AIS data-based dynamic ship emission list establishing method | |
| CN112418049B (en) | Water body change detection method based on high-resolution remote sensing image | |
| Yang et al. | Maritime traffic flow clustering analysis by density based trajectory clustering with noise | |
| CN111401702B (en) | Offshore traffic risk assessment method | |
| CN114936332A (en) | Method and device for analyzing ship traffic flow in water area of wind power plant and storage medium | |
| CN111221925A (en) | Method and device for monitoring and networking wind-waterlogging disaster of power distribution network | |
| KR20070033628A (en) | Maritime geographic information construction and service method | |
| CN109239809B (en) | Weather land line extraction method based on chordal cutting method | |
| CN110909949A (en) | Near-shore sea area chlorophyll a concentration prediction method based on clustering-regression algorithm | |
| Li et al. | Ship traffic flow prediction based on AIS data mining | |
| CN116070735A (en) | Yellow sea green tide distribution area based on side length and azimuth difference rule and drift prediction initial field manufacturing method thereof | |
| Kao et al. | Utilizing the fuzzy IoT to reduce Green Harbor emissions | |
| CN113283810A (en) | Comprehensive evaluation method for atmospheric environment vulnerability of coastal region | |
| CN102128914A (en) | Water quality predicting and evaluating isoconcentration line method | |
| CN112131958A (en) | Method for automatically identifying southwest low vortex | |
| CN114187531B (en) | Remote sensing water environment protection and water consumption management informatization system | |
| CN115273553B (en) | Space dividing method for ship restricted navigation and no-navigation area | |
| CN116805030B (en) | Ocean wave height numerical forecast correction method | |
| CN114755387B (en) | Water body monitoring point location optimization method based on hypothesis testing method | |
| CN117541453A (en) | Intelligent ship traffic management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |