CN114265879A - Land utilization benefit evaluation method and system - Google Patents
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Abstract
The invention discloses a land utilization benefit evaluation method and a system, belonging to the field of land resource management and urban planning, and the value loss of the land in an area to be evaluated, which is the social cost of land utilization, caused by the idle state is obtained by summarizing the idle time cost of the land which is not provided for the land and the idle land in the area to be evaluated; obtaining the economic output of land utilization of the area to be evaluated by counting GDP of the second yield and the third yield of the constructed land of the area to be evaluated within the evaluation time period; obtaining the land utilization ecological output of the to-be-evaluated area by quantifying the park green land ecological service value of the constructed land of the to-be-evaluated area; the method quantifies the profit or the cost of land utilization from the social aspect, the economic aspect and the ecological aspect respectively, obtains the net output of the land in unit area of the area to be evaluated after integration, and further evaluates the land utilization benefit.
Description
Technical Field
The invention belongs to the field of land resource management and urban planning, and particularly relates to a method and a system for evaluating land utilization benefits.
Background
The land is a bearing space for all social and economic activities, and in recent years, the blind expansion phenomenon that the economy is rapidly increased is replaced at the cost of extensive and inefficient land utilization, so that the land resource is seriously wasted and the land space layout is unreasonable. The land utilization benefit is essentially the substance output or beneficial result realized in the social, economic and ecological aspects of regional development by the land investment and consumption in unit area.
The existing land utilization benefit evaluation object mainly evaluates the built construction land of the urban built area, and has less quantitative evaluation research on idle land, batch land and unused land and the like. Meanwhile, most of the existing researches develop evaluation from the perspective of input and output, wherein the input comprises land, capital and labor input, and is expressed by construction land area, material stock, common financial expenditure, fixed asset investment, the number of workers working in second and third productions and the like, and the output comprises economic output, social output and ecological output, and is usually expressed by tens of indexes such as GDP, financial income, urban and town per capita dominant income, per capita retail amount of social sales products, total amount of import and export in land, per capita employment personnel, population density, green land area, urban construction and maintenance fund, three wastes discharge amount, carbon discharge amount and the like. The evaluation index system is complex, and each index is usually non-homogeneous, so that dimensionless processing must be carried out on the index; meanwhile, part of index data needs to be collected from the statistical yearbook, but the research unit with the smallest statistical yearbook is the ballast statistical economic and social data, and the data of microcosmic economic units such as industrial parks, industrial parks and land parcel are difficult to obtain and difficult to dynamically update; the research scale mainly covers a macroscopic region and a mesoscopic city, the microscopic land parcel scale is very weak, the universalization cannot be realized, and the marginalization of a target land parcel is further caused. Therefore, it is important to search for a multi-space-scale land utilization benefit evaluation method with strong applicability and simple operation in order to realize more intensive, more efficient and higher-quality land utilization.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a land utilization benefit evaluation method and system, which are used for solving the technical problem that the land utilization benefit cannot be evaluated in a simple and efficient manner due to the fact that an evaluation index system is complex, data is not easy to obtain, and multi-space-scale evaluation is difficult to carry out in the prior art.
In order to achieve the above object, in a first aspect, the present invention provides a method for evaluating land use efficiency, comprising the steps of:
s1, quantifying the land idle time cost of the unused land and the idle land in the area to be evaluated according to land parcel scale, and summarizing to obtain the social cost of land utilization of the area to be evaluated;
counting GDP of second and third yields of the constructed land in the area to be evaluated in the evaluation period to obtain economic output for land of the area to be evaluated;
quantifying the park green land ecological service value of the constructed land in the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated;
s2, integrating the social cost, economic output and ecological output of land utilization of the area to be evaluated to obtain net output of land of the area to be evaluated;
s3, calculating the ratio of the net land output of the area to be evaluated to the total land area of the area to be evaluated to obtain the net land output of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated;
wherein, the larger the net output of the land in unit area is, the higher the land utilization benefit is.
Further preferably, the net output per unit area of land for the area to be assessed is:
R＝E/T
wherein T is the total area of the area to be evaluated.
Further preferably, the net output of land in the area to be assessed is:
E＝B+C-A
b is the land utilization economic output of the area to be evaluated; c, land utilization ecological output of the area to be evaluated; and A is the social cost of land utilization of the area to be evaluated.
Further preferably, the social cost of land utilization in the area to be evaluated is:
A＝Ae+Ag
wherein A iseA cost of land idle time for the bulk of land not supplied in the area to be assessed; a. thegThe land idle time cost of the idle land in the area to be evaluated; k is a radical ofeThe number of land parcels in the area to be evaluated without land supply;
a reference land price of the ith land parcel which is a batch of land and is not supplied to the land in the area to be evaluated; r is land reduction interest rate; when the property of the land of the ith land which is not used for supplying land in the area to be evaluated is industrial storage land,
the land area of the ith land which is a lot of land in the area to be evaluated and is not provided with land; when the property of the land of the ith parcel of land which is not supplied in the area to be evaluated is other land properties except for the industrial warehousing land,
building area of the ith land which is not provided for land in the area to be evaluated; m is the number of idle years;
the highest service life of the ith land parcel which is a batch of land not supplied in the area to be evaluated; k is a radical ofgFor the number of land blocks of free land in the area to be evaluatedAn amount;
the base land price of the first parcel of the idle land used in the area to be evaluated; when the property of the land of the first parcel of the idle land in the area to be evaluated is industrial warehousing land,
the land area of the first parcel of the idle land used in the area to be evaluated; when the land property of the first parcel of the idle land used in the area to be evaluated is other land properties except the industrial storage land,
building area of the first parcel of the unused land in the area to be evaluated;
the highest service life of the first parcel of the unused land used in the area to be evaluated.
Further preferably, the land use economic yield of the area to be assessed is:
B＝Q
and Q is GDP of the second and third productions of the constructed land in the area to be evaluated in the evaluation period.
Further preferably, the land utilization ecological yield of the area to be evaluated is:
C＝S*v*t
wherein S is the total land area of the constructed land in the area to be evaluated; v is the annual average park green space ecological service value; t is the park green service life within the evaluation period.
Further preferably, the land use benefit assessment method further includes a step S0 executed before the step S1; step S0 includes:
s01, collecting basic data information of the non-supplied land and the unused land in the area to be evaluated to obtain the floor area, the building area, the idle time and the maximum service life of the land of each land in the non-supplied land and the unused land in the area to be evaluated; wherein, the basic data includes: land property, occupied area, building area, idle time, maximum service life of land and land space distribution data;
s02, obtaining the standard land price of different land properties under different land levels based on the collected land level and standard land price data of the urban area where the area to be evaluated is located, and then obtaining the standard land price of each land which is not used for land and is unused in the area to be evaluated by combining the land space distribution data in the basic data information.
Further preferably, step S02 includes:
converting land space distribution data and reference land price data in the basic data into a unified geographic space coordinate system;
and taking the land level and the reference land price data as an overlapped base map, taking land space distribution data in the basic data as an overlapped overlying map layer, and performing spatial overlapping to obtain the reference land prices of various land lots which are not used for land and idle land in the area to be evaluated.
Further preferably, the right terrain properties include: commercial sites, business office sites, industrial sites, residential sites, and public service sites.
In a second aspect, the present invention provides a land use benefit evaluation system, including:
the social cost calculation module is used for quantifying the land idle time cost of the non-supplied land and the idle land in the area to be evaluated according to land parcel scale, and summarizing the land idle time cost to obtain the land utilization social cost of the area to be evaluated;
the economic output calculation module is used for counting GDP (two or three yield) of the constructed land in the area to be evaluated in the evaluation time period to obtain the land utilization economic output of the area to be evaluated;
the ecological output calculation module is used for quantifying the park green land ecological service value of the built land in the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated;
the integrated module is used for integrating the land utilization social cost, the economic output and the ecological output of the area to be evaluated to obtain the net output of the land of the area to be evaluated;
the evaluation module is used for calculating the ratio of the net land output of the area to be evaluated to the total land area of the area to be evaluated to obtain the net land output of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated;
wherein, the higher the net output of the land in unit area is, the higher the land utilization benefit is.
In a third aspect, the present invention also provides a machine-readable storage medium storing machine-executable instructions which, when invoked and executed by a processor, cause the processor to implement the land use benefit assessment method provided by the first invention of the present invention.
Generally, by the above technical solution conceived by the present invention, the following beneficial effects can be obtained:
1. the invention provides a land utilization benefit evaluation method, which is used for obtaining the social cost of land utilization of an area to be evaluated by summarizing the land idle time cost of the lot of the area to be evaluated without land supply and idle land; obtaining economic output for land of the area to be evaluated by counting GDP of the second yield and the third yield of the constructed land of the area to be evaluated within the evaluation time period; obtaining the land utilization ecological output of the area to be evaluated by quantifying the park green land ecological service value of the constructed land in the area to be evaluated; the method quantifies the profit/cost of land utilization from the social aspect, the economic aspect and the ecological aspect respectively, the net output of land in the area to be evaluated is obtained after integration, the larger the net output of land in unit area is, the higher the land utilization benefit is, the method is simple in calculation, easy in data acquisition and capable of evaluating the land utilization benefit simply and efficiently.
2. In the land utilization benefit evaluation method provided by the invention, because the land has the characteristics of immobility, non-increment, individuality, permanence and the like, when a user occupies a certain land, the land not only can provide the current pure benefit, but also can continuously obtain the pure benefit. For the batch land without supply and idle land, the land can not obtain due benefit, and the loss caused by idle land is generated. The method divides the batch of land which is not used and the land which is not used in the area to be evaluated into land parcels according to the land size, quantifies and summarizes the land idle time cost of each land which is not used and the land which is used in the batch of land which is used in the area to be evaluated, and obtains the loss caused by land idle. The method is simple in calculation, easy in data acquisition and capable of quantifying the social cost of land utilization simply and efficiently.
3. The land use benefit evaluation method provided by the invention can conveniently acquire full-aperture land use benefit evaluation index data. And the data availability is strong and universal, and the core service data from natural resources and a planning office has considerable reliability.
4. The land utilization benefit evaluation method provided by the invention comprises the steps of calculating each evaluation index of land utilization benefit by collecting basic data information of the batch unused land and the unused land in the area to be evaluated, calculating the land idle time cost of each land respectively, and summarizing to obtain the social cost of land utilization in the area to be evaluated; the method has strong applicability and simple process, is not limited by geographical range, and can realize the evaluation of the land utilization benefit of multiple spatial scales.
5. The invention provides a quantitative measuring method of benefit influence factors, which is used for evaluating land utilization benefits, adopts monetization as a measuring unit, carries out physical quantization on land utilization social cost, land utilization economic output and land utilization ecological output, can truly and objectively reflect profit and loss conditions of land operation in an evaluation time period, and further intuitively reflects the true level of the land utilization benefits of each evaluation unit.
Drawings
FIG. 1 is a flow chart of a land use benefit evaluation method provided by the present invention;
fig. 2 is a schematic diagram of basic data information of land use benefit evaluation constructed by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In order to achieve the above object, in a first aspect, the present invention provides a method for evaluating land use efficiency, as shown in fig. 1, comprising the steps of:
s1, calculating the social cost of land utilization, economic output of land utilization and ecological output of land utilization in the area to be evaluated, and specifically comprising the following steps:
1) calculating the land utilization social cost of the area to be evaluated:
quantifying the land idle time cost of the unused land and the idle land in the area to be evaluated according to land parcel scale, and summarizing to obtain the social cost of land utilization of the area to be evaluated; dividing the batch of unused land and unused land in the area to be evaluated according to land occupation scale;
it should be noted that, because the land has the characteristics of immobility, individuality, permanence, etc., when a user occupies a certain land, the land can not only provide the current pure profit, but also continuously obtain the pure profit. For the batch land without supply and the idle land, the land can not obtain due benefit, and the loss caused by the idle land is generated. Therefore, the land idle time cost of each land which is not used for the land and the land used for idle land in the area to be evaluated is quantified, and the loss caused by land idle, namely the social cost of land utilization of the area to be evaluated is obtained.
Specifically, the social cost of land utilization in the area to be evaluated is:
A＝Ae+Ag
wherein A iseA cost of land idle time for the bulk of land not supplied in the area to be assessed; a. thegThe land idle time cost of the idle land in the area to be evaluated; k is a radical ofeThe number of land parcels in the area to be evaluated without land supply;
a reference land price of the ith land parcel which is a batch of land and is not supplied to the land in the area to be evaluated; r is land reduction interest rate; when the property of the land of the ith land which is not used for supplying land in the area to be evaluated is industrial storage land,
the land area of the ith land which is a lot of land in the area to be evaluated and is not provided with land; when the property of the land of the ith parcel of land which is not supplied in the area to be evaluated is other land properties except for the industrial warehousing land,
building area of the ith land which is not provided for land in the area to be evaluated; m is the number of idle years;
the highest service life of the ith land parcel which is a batch of land not supplied in the area to be evaluated; k is a radical ofgThe land parcel number of the idle land in the area to be evaluated is determined;
the base land price of the first parcel of the idle land used in the area to be evaluated; when the property of the land of the first parcel of the idle land in the area to be evaluated is industrial warehousing land,
for the first parcel of the unused parcel in the area to be evaluatedA ground area; when the land property of the first parcel of the idle land used in the area to be evaluated is other land properties except the industrial storage land,
building area of the first parcel of the unused land in the area to be evaluated;
the highest service life of the first parcel of the unused land used in the area to be evaluated. Wherein, in the reference land price, when the land property is commercial land, business office land, residential land or public service land, the reference land price is floor land price; when the property of the land is industrial land, the benchmark land price is the ground price.
2) Calculating the land utilization economic output of the area to be evaluated:
and D, counting GDP of the second yield and the third yield of the constructed land in the area to be evaluated in the evaluation period to obtain the economic output of land utilization in the area to be evaluated.
Specifically, the economic yield of land utilization in the area to be evaluated is:
B＝Q
and Q is GDP of the second and third productions of the constructed land of the area to be evaluated in the evaluation period.
3) Calculating the land utilization ecological output of the area to be evaluated:
and quantifying the park green land ecological service value of the constructed land in the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated.
Specifically, the land utilization ecological yield of the area to be evaluated is as follows:
C＝S*v*t
wherein S is the total land area of the constructed land in the area to be evaluated; v is the annual average park green space ecological service value; t is the park green service life within the evaluation period.
And S2, integrating the social cost, economic output and ecological output of land utilization of the area to be evaluated to obtain the net output of land of the area to be evaluated. The land utilization economic output and the ecological output are positive indexes and reflect the income brought by the constructed land in the evaluation period; the social cost of land utilization is substantially the amount lost due to land idling in the assessment period, and is a negative indicator.
Specifically, the net output of land in the area to be assessed is:
E＝B+C-A
b is the land utilization economic output of the area to be evaluated; c, land utilization ecological output of the area to be evaluated; and A is the social cost of land utilization of the area to be evaluated.
S3, calculating the ratio of the net land output E of the area to be evaluated to the total land area T of the area to be evaluated to obtain the net land output R of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated; specifically, R is E/T.
Wherein, the larger the net output of the land in unit area is, the higher the land utilization benefit is.
In an alternative embodiment, the land use benefit obtaining method further includes step S0 performed before step S1; step S0 includes:
s01, collecting basic data information of the non-supplied land and the unused land in the area to be evaluated to obtain the floor area, the building area, the idle time and the maximum service life of the land of each land in the non-supplied land and the unused land in the area to be evaluated; wherein, the basic data includes: land property, occupied area, building area, idle time, maximum service life of land and land space distribution data;
s02, obtaining the standard land price of different land properties under different land levels based on the collected land level and standard land price data of the urban area where the area to be evaluated is located, and then obtaining the standard land price of each land which is not used for land and is unused in the area to be evaluated by combining the land space distribution data in the basic data information. Wherein, the land property comprises: commercial sites, business office sites, industrial sites, residential sites, and public service sites.
Specifically, the content of the collected land level and reference land price data of the urban area where the area to be evaluated is located covers: land use right average price data of nationally constructed land of each grade and each district under certain set conditions.
Step S02 includes: converting land space distribution data and reference land price data of commercial land, business office land, industrial land, residential land and public service land in the basic data information into a unified geospatial coordinate system; and taking the land level and the reference land price data as an overlay base map, taking land space distribution data of commercial land, business office land, industrial land, residential land and public service land in basic data information as an overlay map layer, and performing spatial overlay to obtain the reference land price of each land which is not provided for land and idle land in batches in the area to be evaluated.
In addition, the invention also collects the basic data information of the constructed land in advance, including the land property and the land area, so as to be used for calculating the subsequent land utilization economic output and the land utilization ecological output.
To further illustrate the land use benefit obtaining method provided by the present invention, the following detailed description is made with reference to the following embodiments:
examples
A land utilization benefit evaluation method comprises the following steps:
step 1, selecting a local part of a city development area as a preferred embodiment, and collecting land basic data information from a natural resource and planning department, wherein the land basic data information comprises the occupied area, the building area, the land restoration interest rate, the idle time and the maximum service life of land, the land property of the constructed land and the total land area of the idle land in the area to be evaluated. Specifically, the evaluation time period of the embodiment is 2019 to 2020, and a schematic diagram of the constructed basic data of the land utilization benefit evaluation is shown in fig. 2; wherein, the lot and un-supply land comprises commercial service land and stadium land, and the basic data information is as follows: the land occupation area of the commercial service industry is 3.6 hectares, the building area is 6.12 square meters, the volume rate is 1.8, the initial year and the query year of the land are respectively 2013 and 2020, the highest age of the land use is 40 years, and the idle time is 2 years; the floor area of the stadium land is 5.8 hectares, the building area is 8.12 square meters, the volume rate is 1.4, the initial year and the query year of the land are 2015 and 2020 years respectively, the maximum year of the land use is 50 years, and the idle time is 2 years. The idle land basic data information is as follows: the land property is industrial land, the occupied area is 16.3 hectares, the building area is 19.56 square meters, the volume fraction is 1.2, the initial year and the query year of the land are 2010 and 2020 years respectively, the maximum age of the land use is 50 years, and the idle time is 2 years.
And 2, performing spatial superposition on the land spatial distribution data and the land level and reference land price data published and implemented by the urban people government to obtain standard land prices of commercial service land and stadium land of 8361 yuan/square meter and 3519 yuan/square meter respectively, and the reference land price of industrial land of 1610 yuan/square meter. Wherein, in the reference land price, when the land property is commercial land, business office land, residential land or public service land, the reference land price is floor land price; when the property of the land is industrial land, the benchmark land price is the ground price.
Step 3, calculating the social cost of land utilization, economic output of land utilization and ecological output of land utilization of the area to be evaluated;
in particular, based on a formula
Calculating to obtain the land idle time cost A of the batch land not supplied to the land in the area to be evaluatedg6519 ten thousand yuan.
Based on the formula
Calculating to obtain land idle time cost A of idle land in the area to be evaluatedeIt is 3313 ten thousand yuan. The land reduction interest rate value in this example is 6%.
Therefore, the land utilization social cost A of the area to be evaluated is 9832 ten thousand yuan.
Further, two-yield and three-yield GDP of the constructed land of the area to be evaluated in the evaluation time period are counted, and the land utilization economic output B of the area to be evaluated is 22712 ten thousand yuan. In this embodiment, the GDP of the second and third productions of the constructed land is obtained by calculating the product of the GDP of the second and third productions of the equal part of the land (17000 ten thousand yuan per square kilometer) and the area of the constructed land.
Further, the land utilization ecological output C of the area to be evaluated is calculated to be 414 ten thousand yuan based on the formula C. In this embodiment, the value of the park green space ecological service value v is 1 ten thousand yuan/mu/year.
Step 4, integrating the social cost, economic output and ecological output of the land utilization of the area to be evaluated to obtain the net output of the land of the area to be evaluated;
specifically, the net output E of land utilization in the area to be evaluated is 13294 ten thousand yuan according to the formula E, B, C and A.
Step 5, calculating the ratio of the net land output E of the area to be evaluated to the total land area T of the area to be evaluated to obtain the net land output R of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated;
specifically, the net output of the land in unit area of the area to be evaluated is 8345 ten thousand yuan per square kilometer according to the formula R-E/T.
It should be noted that the greater the net output per unit area of land, the greater the land use efficiency.
In summary, the invention quantifies and summarizes the land idle time cost of the batch land not used for the land and the idle land in the area to be evaluated according to the land parcel scale by collecting the basic data information of the batch land not used for the land and the idle land in the area to be evaluated, so as to obtain the social cost of land utilization of the area to be evaluated. And D, counting GDP of the second yield and the third yield of the constructed land in the area to be evaluated in the evaluation period to obtain the economic output of land utilization in the area to be evaluated. And quantifying the park green space ecological service value of the constructed land in the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated. And finally, the social cost, economic output and ecological output of land utilization of the area to be evaluated are integrated to obtain net output of land in unit area of the area to be evaluated so as to represent land utilization benefit of the area to be evaluated. The process method has strong applicability, convenient data collection and simple process, is not limited by geographical range, and can realize the evaluation of the land utilization benefit of multiple spatial scales.
In a second aspect, the present invention provides a land use benefit evaluation system, including:
the social cost calculation module is used for quantifying the land idle time cost of the non-supplied land and the idle land in the area to be evaluated according to land parcel scale, and summarizing the land idle time cost to obtain the land utilization social cost of the area to be evaluated;
the economic output calculation module is used for counting GDP (two or three yield) of the constructed land in the area to be evaluated in the evaluation time period to obtain the land utilization economic output of the area to be evaluated;
the ecological output calculation module is used for quantifying the park green land ecological service value of the built land in the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated;
the integrated module is used for integrating the land utilization social cost, the economic output and the ecological output of the area to be evaluated to obtain the net output of the land of the area to be evaluated;
the evaluation module is used for calculating the ratio of the net land output of the area to be evaluated to the total land area of the area to be evaluated to obtain the net land output of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated;
wherein, the larger the net output of the land in unit area is, the higher the land utilization benefit is.
The related technical solutions are the same as the land utilization benefit evaluation method provided by the first aspect of the present invention, and are not described herein again.
In a third aspect, the present invention also provides a machine-readable storage medium storing machine-executable instructions which, when invoked and executed by a processor, cause the processor to implement the land use benefit assessment method provided by the first invention of the present invention.
The related technical solutions are the same as the land utilization benefit evaluation method provided by the first aspect of the present invention, and are not described herein again.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A land utilization benefit evaluation method is characterized by comprising the following steps:
s1, quantifying the land idle time cost of the unused land and the idle land in the area to be evaluated according to land parcel scale, and summarizing to obtain the social cost of land utilization of the area to be evaluated;
counting GDP of the second yield and the third yield of the constructed land of the area to be evaluated in the evaluation period to obtain the economic output of land utilization of the area to be evaluated;
quantifying the park green land ecological service value of the constructed land of the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated;
s2, integrating the social cost, economic output and ecological output of land utilization of the area to be evaluated to obtain net output of land of the area to be evaluated;
s3, calculating the ratio of the net land output of the area to be evaluated to the total land area of the area to be evaluated to obtain the net land output of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated;
wherein, the larger the net output of the land in unit area is, the higher the land utilization benefit is.
2. The land use benefit assessment method according to claim 1, wherein the net output per unit area of land of the area to be assessed is:
R＝E/T
E＝B+C-A
wherein E is net output of land; t is the total area of the area to be evaluated; b, land utilization economic output of the area to be evaluated; c, land utilization ecological output of the area to be evaluated; and A is the social cost of land utilization of the area to be evaluated.
3. The land use benefit evaluation method according to claim 2, wherein the social cost of land use of the area to be evaluated is:
A＝Ae+Ag
wherein A iseA cost of land idle time for the bulk of land not supplied in the area to be assessed; a. thegThe land idle time cost of the idle land in the area to be evaluated; k is a radical ofeThe number of land parcels in the area to be evaluated without land supply;
a reference land price of the ith land parcel which is a batch of land and is not supplied to the land in the area to be evaluated; r is land reduction interest rate; when the property of the land of the ith land which is not used for supplying land in the area to be evaluated is industrial storage land,
the land area of the ith land which is a lot of land in the area to be evaluated and is not provided with land; when the property of the land of the ith parcel of land which is not supplied in the area to be evaluated is other land properties except for the industrial warehousing land,
building area of the ith land which is not provided for land in the area to be evaluated; m is the number of idle years;
the highest service life of the ith land parcel which is a batch of land not supplied in the area to be evaluated; k is a radical ofgFor land left unused in the area to be assessedThe number of land;
the base land price of the first parcel of the idle land used in the area to be evaluated; when the property of the land of the first parcel of the idle land in the area to be evaluated is industrial warehousing land,
the land area of the first parcel of the idle land used in the area to be evaluated; when the land property of the first parcel of the idle land used in the area to be evaluated is other land properties except the industrial storage land,
building area of the first parcel of the unused land in the area to be evaluated;
the highest service life of the first parcel of the unused land used in the area to be evaluated.
4. The land use benefit assessment method according to claim 2, wherein the land use economic output of the area to be assessed is:
B＝Q
and Q is GDP of the second and third productions of the constructed land in the area to be evaluated in the evaluation period.
5. The land use benefit assessment method according to claim 2, wherein the land use ecological yield of the area to be assessed is:
C＝S*v*t
wherein S is the total land area of the constructed land in the area to be evaluated; v is the annual average park green space ecological service value; t is the park green service life within the evaluation period.
6. The land use benefit evaluation method according to any one of claims 1-5, further comprising a step S0 performed before said step S1; the step S0 includes:
s01, collecting basic data information of the non-supplied land and the unused land in the area to be evaluated to obtain the floor area, the building area, the idle time and the maximum service life of the land of each land in the non-supplied land and the unused land in the area to be evaluated; wherein the basic data material comprises: land property, occupied area, building area, idle time, maximum service life of land and land space distribution data;
and S02, obtaining the standard land prices of different land properties under different land levels based on the collected land levels and the standard land price data of the urban area where the area to be evaluated is located, and obtaining the standard land prices of various land which are not used for land and idle land in the area to be evaluated by combining the land space distribution data in the basic data information.
7. The land use benefit evaluation method according to claim 6, wherein the step S02 includes:
converting the land space distribution data and the reference land price data in the basic data information into a unified geographic space coordinate system;
and taking the land level and the reference land price data as an overlapped base map, taking land space distribution data in the basic data as an overlapped overlying map layer, and performing spatial overlapping to obtain the reference land price of each land which is not used for land and is unused in the area to be evaluated.
8. The land use benefit evaluation method according to claim 3, 6 or 7, wherein the right of way property comprises: commercial sites, business office sites, industrial sites, residential sites, and public service sites.
9. An earth utilization efficiency evaluation system, comprising:
the social cost calculation module is used for quantifying the land idle time cost of the non-supplied land and the idle land in the area to be evaluated according to land parcel scale, and summarizing the land idle time cost to obtain the land utilization social cost of the area to be evaluated;
the economic output calculation module is used for counting GDP (two or three yield) of the constructed land in the area to be evaluated in the evaluation time period to obtain the land utilization economic output of the area to be evaluated;
the ecological output calculation module is used for quantifying the park green land ecological service value of the constructed land of the area to be evaluated to obtain the land utilization ecological output of the area to be evaluated;
the integrated module is used for integrating the land utilization social cost, the economic output and the ecological output of the area to be evaluated to obtain the net output of the land of the area to be evaluated;
the evaluation module is used for calculating the ratio of the net land output of the area to be evaluated to the total land area of the area to be evaluated to obtain the net land output of the area to be evaluated in unit area so as to evaluate the land utilization benefit of the area to be evaluated;
wherein, the larger the net output of the land in unit area is, the higher the land utilization benefit is.
10. A machine-readable storage medium having stored thereon machine-executable instructions which, when invoked and executed by a processor, cause the processor to implement the land use benefit assessment method of any one of claims 1 to 8.
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