CN106644955A - Method for detecting calcium carbonate content of saline soil - Google Patents
Method for detecting calcium carbonate content of saline soil Download PDFInfo
- Publication number
- CN106644955A CN106644955A CN201610883188.8A CN201610883188A CN106644955A CN 106644955 A CN106644955 A CN 106644955A CN 201610883188 A CN201610883188 A CN 201610883188A CN 106644955 A CN106644955 A CN 106644955A
- Authority
- CN
- China
- Prior art keywords
- pedotheque
- calcium carbonate
- carbonate content
- salinization soil
- reflectivity
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a method for detecting the calcium carbonate content of saline soil. The method comprises the concrete steps that the saline soil is used as a detecting object; the soil sample is collected and is subjected to pretreatment; the reflectivity of the soil sample subjected to pretreatment is measured to obtain the reflectivity data at the wave band of 350 to 2500nm; after the reflectivity data at the wave band of 350 to 2500nm is subjected to multiplicative scatter correction, wavelet denoising is used; then, moothing treatment is performed; the reflectivity data of the soil sample at the specific wave length is extracted; the reflectivity data of each wave length is substituted into a saline soil calcium carbonate content detecting model; the calcium carbonate content of the saline soil is obtained through calculation. The detecting method has the advantages that the accuracy is high; the interference is little; the detection limit of the method is improved; the feasibility is high; meanwhile, the characteristics of no pollution, simplicity and convenience in operation, high speed and accuracy are realized; the method is suitable for being popularized and applied.
Description
Technical field
The present invention relates to the detection of carbon in soil content, the inspection of calcium carbonate content in more particularly to a kind of salinization soil
Survey method.
Background technology
Calcium carbonate is the main component of Carbonates In Soil, to soil acidity or alkalinity, soil colloid proterties and nutrient situation etc.
Soil series of physical, chemistry and biological property have material impact, and the calcium carbonate of high-load is by reducing the effective of soil phophorus
Property so affect plant growth, soil calcium carbonate to affect the performance such as adsorption capacity of soil heavy metal.Soil calcium carbonate content
It is the classification of soils, soil fertility assessment and soil-Atmospheric CO2One of important evidence of exchange, it is to soil acidity or alkalinity, nutrient
Situation, soil colloid proterties etc. have a significant impact.Salinization soil is one kind of arid biogeographic zone semiarid region large area distribution
Soil types, the type soil contains substantial amounts of carbonate, and wherein main component is calcium carbonate, sometimes visible in soil profile
To obvious calcic horizon, the height of calcium carbonate content, there is obvious decisive work to the physical and chemical character of salinization soil
With, therefore its content data is an important reference of salinization soil rational exploitation and utilization and crops rational deployment.
The detection method of existing carbon in soil acid calcium content needs to prepare chemical reagent, chemical tail washings row in continuous mode
It is rivals in a contest the pollution and the injury to human body of environment, and there is complex operation step, the defect of detection time length.Current existing skill
It is badly in need of a kind of detection method of calcium carbonate content in pollution-free, easy to operate, quick accurate salinization soil in art.
The content of the invention
In order to overcome defect present in prior art, the present invention to propose a kind of pollution-free, easy to operate, quick accurate
Salinization soil in calcium carbonate content detection method, the method achieve the quick standard of calcium carbonate content in salinization soil
Really detection, it is not necessary to prepare any chemical reagent, it is to avoid chemical tail liquid emissions are to the pollution of environment and to people in continuous mode
The injury of body, while also greatly simplify operating procedure, shortens detection time, can meet calcium carbonate content in salinization soil
The demand of data, the science improvement to develop salinization soil resource and salinization soil provides it is necessary refer to according to
According to.
Specifically, the detection method of the salinization soil calcium carbonate content that the present invention is provided, comprises the steps：
S1：With salinization soil as detection object, pedotheque is gathered, pre-processed；
S2：The reflectivity of pretreated pedotheque is determined, the reflectivity data of 350-2500nm wave bands is obtained；
S3：The reflectivity data of 350-2500nm wave bands is carried out after multiplicative scatter correction, using wavelet de-noising, then is carried out
Smoothing processing；
S4：Extract pedotheque 553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm, 2462nm,
The reflectivity data of 2472nm, 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength；
S5：The reflectivity data of each wavelength is substituted into into salinization soil calcium carbonate content detection model：
Y=224.0203x1-193.9308x2-1703.368x3+2059.277x4+1618.551x5-2067.582x6+
675.3119x7+587.141x8+618.4008x9+479.9793x10+230.2464x11-659.153x12-483.5125x13-
1372.223x14+ 24.54271, it is calculated salinization soil calcium carbonate content；
Wherein, Y is the calcium carbonate content of salinization soil, and unit is g/kg；x1、x2、x3、x4、x5、x6、x7、x8、x9、x10、
x11、x12、x13、x14Pedotheque respectively to be detected 553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm,
The reflectivity data of 2462nm, 2472nm, 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength.
Preferably, in S1, the preprocessing process of the pedotheque is specific as follows：
The debris in the pedotheque of collection are removed, the pedotheque is positioned over into room-dry, by air-dried soil
After sample mortar grinder and cross 2mm sieve, grinding sieve after pedotheque be positioned in baking oven under the conditions of 50 DEG C dry 2h after,
Sealing preserve after cooling to room temperature.
Preferably, in S2, the QualitySpec Trek Handheld spectrometers produced using ASD companies of the U.S. determine soil
The reflectivity of sample, the resolution ratio of the spectrometer is 3nm in 350-700nm, and 701-1400nm is 9.8nm, 1401-2500nm
For 8.1nm.
It is highly preferred that in S2, during using the spectrophotometer pedotheque, environment temperature is constant, and pedotheque is contained
In being mounted in the culture dish of pitch-dark a diameter of 5cm, when probe is with pedotheque contact measurement reflectivity, control therebetween
, there is the phenomenon of light leak to avoid probe internally provided light source in distance.
It is highly preferred that pedotheque is laid in after the culture dish of a diameter of 5cm, the thickness of pedotheque is 10-15mm.
Preferably, in S3, the smoothing processing method is Savitzky-Golay Smoothing, and smooth window is 7.
Preferably, in S4,553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm, 2462nm, 2472nm,
The reflectivity data of 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength, respectively same pedotheque
It is repeated 4 times the mean value of the reflectivity data of measure.
The detection method of the salinization soil calcium carbonate content that the present invention is provided, realizes salinization soil calcium carbonate content
Quick and precisely detection, it is not necessary to prepare any chemical reagent, it is to avoid dirt of the chemical tail liquid emissions to environment in continuous mode
Dye and the injury to human body, while also greatly simplify operating procedure, shorten detection time, can meet salinization soil carbonic acid
The demand of calcium content data, the science improvement to develop salinization soil resource and salinization soil provides necessary ginseng
Examine foundation.The method degree of accuracy is high, disturb little, improves method detection limit, and feasibility is strong, at the same have it is pollution-free, easy to operate,
Quick accurate the characteristics of, it is adapted to popularization and application.
Description of the drawings
Fig. 1 is salinization soil calcium carbonate measured value provided in an embodiment of the present invention and detected value scatter diagram (n=195).
Specific embodiment
In order that those skilled in the art more fully understand that technical scheme can be practiced, with reference to concrete
The invention will be further described for embodiment, but illustrated embodiment is not as a limitation of the invention.
A kind of detection method of salinization soil calcium carbonate content, comprises the steps：
With salinization soil as detection object, the present embodiment gram pasture random acquisition 195 in the empty station of Xinjiang Wenxiu County
The salinization soil sample of individual different calcium carbonate contents, remove pedotheque in handstone and macroscopic root system of plant and
Dry branches and fallen leaves, and pedotheque is positioned over into room-dry, it is fully ground granulating, air-dried pedotheque mortar after being easy to
It is all the sieve of 2mm by aperture after grinding, grinds the pedotheque after sieving and be positioned in baking oven drying under the conditions of 50 DEG C
After 2h, after cooling to room temperature sealing preserve, completes the pretreatment of pedotheque.
The QualitySpec Trek Handheld spectrometers that pretreated pedotheque is produced using ASD companies of the U.S.
The reflectivity of 195 pedotheques is determined respectively, obtains the reflectivity data of 350-2500nm wave bands；It should be noted that should
The resolution ratio of spectrometer is 3nm in 350--700nm, and 701-1400nm is 9.8nm, and 1401-2500nm is 8.1nm；Using the light
When spectrometer determines pedotheque, environment temperature is constant, and pedotheque is contained in the culture dish of pitch-dark a diameter of 5cm, visits
When head is with pedotheque contact measurement reflectivity, distance therebetween is controlled, light leak occur to avoid probe internally provided light source
Phenomenon, and caused measurement data is inaccurate.Preferably, pedotheque is laid in after the culture dish of a diameter of 5cm, soil
The thickness of sample is optimal with 10-15mm.
Then, polynary scattering school is carried out respectively to the reflectivity data of the 350-2500nm wave bands of this 195 pedotheques
After just, using wavelet de-noising, then it is smoothed, it is preferable that smoothing processing adopts Savitzky-Golay Smoothing
Method, smooth window is 7.
In wave band after above-mentioned process, extract pedotheque respectively 553nm, 554nm, 1400nm, 1416nm,
1417nm, 1430nm, 2462nm, 2472nm, 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength it is anti-
Rate data are penetrated, the reflectivity data of each wavelength is substituted into into salinization soil calcium carbonate content detection model：
Y=224.0203x1-193.9308x2-1703.368x3+2059.277x4+1618.551x5-2067.582x6+
675.3119x7+587.141x8+618.4008x9+479.9793x10+230.2464x11-659.153x12-483.5125x13-
1372.223x14+ 24.54271, it is calculated the calcium carbonate content of the salinization soil sample；
Wherein, Y is the calcium carbonate content of salinization soil, and unit is g/kg；x1、x2、x3、x4、x5、x6、x7、x8、x9、x10、
x11、x12、x13、x14Pedotheque respectively to be detected 553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm,
The reflectivity data of 2462nm, 2472nm, 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength.
It should be noted that the calcium carbonate content in order to more accurately detect each pedotheque, we are to same soil
Earth sample is repeated 4 times measure, obtains the reflectivity data of 4 groups of 350-2500nm wave bands, and to every group of 350-2500nm wave band
Reflectivity data is carried out after multiplicative scatter correction, using wavelet de-noising, then is smoothed；Respectively 4 measure of extraction is same
One pedotheque 553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm, 2462nm, 2472nm, 2473nm,
The reflectivity data of 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength, takes respectively the mean value of corresponding wavelength, band
Enter salinization soil calcium carbonate content detection model, that is, obtain the calcium carbonate content of the pedotheque.
Using the actual value of the pedotheque calcium carbonate content of indoor chemical assay acquisition and using above-mentioned saline soil
The statistics of the detected value that the calcium carbonate content detection model of earth is obtained, is specifically shown in Table 1.
Salinization soil DIC content detection result of table 1 (sample number is 195)
As shown in Table 1, actual value is very close with the mean value of both detected values, maximum, minimum of a value；Fig. 1 is salt marsh
Change soil calcium carbonate measured value and detected value scatter diagram, as seen from Figure 1 pedotheque calcium carbonate content measured value and detection
The fitting degree of value.Coefficient of determination R between actual value and detected value20.70 is reached, root-mean-square error RMSE only has 2.04g/
Kg, mean absolute error MAE only has 1.54g/kg, and standard deviation reaches 1.83 with root-mean-square error than RPD, is evaluated according to RPD and is marked
Standard, RPD illustrates the ability that model has high-precision forecast close to 2.0.The result shows, the method for the present invention can accurately,
Quickly detect the calcium carbonate content in pedotheque.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the present invention, and its protection domain is not limited
In this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the protection of the present invention
Within the scope of, protection scope of the present invention is defined by claims.
Claims (7)
1. a kind of detection method of salinization soil calcium carbonate content, it is characterised in that comprise the steps：
S1：With salinization soil as detection object, pedotheque is gathered, pre-processed；
S2：The reflectivity of pretreated pedotheque is determined, the reflectivity data of 350-2500nm wave bands is obtained；
S3：The reflectivity data of 350-2500nm wave bands is carried out after multiplicative scatter correction, using wavelet de-noising, then being smoothed
Process；
S4：Extract pedotheque 553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm, 2462nm, 2472nm,
The reflectivity data of 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength；
S5：The reflectivity data of each wavelength is substituted into into salinization soil calcium carbonate content detection model：
Y=224.0203x1-193.9308x2-1703.368x3+2059.277x4+1618.551x5-2067.582x6+
675.3119x7+587.141x8+618.4008x9+479.9793x10+230.2464x11-659.153x12-483.5125x13-
1372.223x14+ 24.54271, it is calculated salinization soil calcium carbonate content；
Wherein, Y is the calcium carbonate content of salinization soil, and unit is g/kg；x1、x2、x3、x4、x5、x6、x7、x8、x9、x10、x11、
x12、x13、x14Pedotheque respectively to be detected 553nm, 554nm, 1400nm, 1416nm, 1417nm, 1430nm,
The reflectivity data of 2462nm, 2472nm, 2473nm, 2474nm, 2475nm, 2476nm, 2477nm, 2492nm wavelength.
2. the detection method of salinization soil calcium carbonate content according to claim 1, it is characterised in that described in S1
The preprocessing process of pedotheque is specific as follows：
The debris in the pedotheque of collection are removed, the pedotheque is positioned over into room-dry, by air-dried pedotheque
With after mortar grinder and cross aperture 2mm sieve, grinding sieve after pedotheque be positioned in baking oven under the conditions of 50 DEG C dry 2h after,
Sealing preserve after cooling to room temperature.
3. the detection method of salinization soil calcium carbonate content according to claim 1, it is characterised in that in S2, adopts
The QualitySpec Trek Handheld spectrometers of ASD companies of U.S. production determine the reflectivity of pedotheque, the spectrometer
Resolution ratio 350-700nm be 3nm, 701-1400nm is 9.8nm, and 1401-2500nm is 8.1nm.
4. the detection method of salinization soil calcium carbonate content according to claim 3, it is characterised in that in S2, adopts
During the spectrophotometer pedotheque, environment temperature is constant, and pedotheque is contained in into the culture dish of pitch-dark a diameter of 5cm
In, when probe is with pedotheque contact measurement reflectivity, distance therebetween is controlled, to avoid probe internally provided light source from occurring
The phenomenon of light leak.
5. the detection method of salinization soil calcium carbonate content according to claim 4, it is characterised in that by pedotheque
After being laid in the culture dish of a diameter of 5cm, the thickness of pedotheque is 10-15mm.
6. the detection method of salinization soil calcium carbonate content according to claim 1, it is characterised in that described in S3
Smoothing processing method is Savitzky-Golay Smoothing methods, and smooth window is 7.
7. the detection method of salinization soil calcium carbonate content according to claim 1, it is characterised in that in S4,
553nm、554nm、1400nm、1416nm、1417nm、1430nm、2462nm、2472nm、2473nm、2474nm、2475nm、
The reflectivity data of 2476nm, 2477nm, 2492nm wavelength, respectively same pedotheque is repeated 4 times the reflectivity number of measure
According to mean value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883188.8A CN106644955A (en) | 2016-10-09 | 2016-10-09 | Method for detecting calcium carbonate content of saline soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883188.8A CN106644955A (en) | 2016-10-09 | 2016-10-09 | Method for detecting calcium carbonate content of saline soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644955A true CN106644955A (en) | 2017-05-10 |
Family
ID=58854442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610883188.8A Pending CN106644955A (en) | 2016-10-09 | 2016-10-09 | Method for detecting calcium carbonate content of saline soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116818700A (en) * | 2023-03-01 | 2023-09-29 | 浙江省地矿科技有限公司 | Method for detecting calcium carbonate in calcareous soil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738383A (en) * | 2008-11-07 | 2010-06-16 | 中国农业科学院农业环境与可持续发展研究所 | Mid-infrared spectrum-based method for quickly detecting contents of heavy metal elements in soil |
| CN101769868A (en) * | 2008-12-29 | 2010-07-07 | 中国科学院沈阳应用生态研究所 | Soil moisture reflection spectrum characteristic analysis method |
| CN103954586A (en) * | 2014-05-13 | 2014-07-30 | 泰顺派友科技服务有限公司 | Method for rapidly predicting content of soil organic matters based on eleven spectrum wavelet coefficients |
| CN104897592A (en) * | 2015-06-11 | 2015-09-09 | 石河子大学 | Monitoring method of salt ion content in saline soil based on hyperspectral technology |
| CN105223141A (en) * | 2015-11-03 | 2016-01-06 | 塔里木大学 | The detection method of calcium ion in soil |
-
2016
- 2016-10-09 CN CN201610883188.8A patent/CN106644955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738383A (en) * | 2008-11-07 | 2010-06-16 | 中国农业科学院农业环境与可持续发展研究所 | Mid-infrared spectrum-based method for quickly detecting contents of heavy metal elements in soil |
| CN101769868A (en) * | 2008-12-29 | 2010-07-07 | 中国科学院沈阳应用生态研究所 | Soil moisture reflection spectrum characteristic analysis method |
| CN103954586A (en) * | 2014-05-13 | 2014-07-30 | 泰顺派友科技服务有限公司 | Method for rapidly predicting content of soil organic matters based on eleven spectrum wavelet coefficients |
| CN104897592A (en) * | 2015-06-11 | 2015-09-09 | 石河子大学 | Monitoring method of salt ion content in saline soil based on hyperspectral technology |
| CN105223141A (en) * | 2015-11-03 | 2016-01-06 | 塔里木大学 | The detection method of calcium ion in soil |
Non-Patent Citations (1)
| Title |
|---|
| 洪长桥 等: "苏北滨海土壤碳酸钙含量反射光谱估算研究", 《土壤学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116818700A (en) * | 2023-03-01 | 2023-09-29 | 浙江省地矿科技有限公司 | Method for detecting calcium carbonate in calcareous soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104062263B (en) | The near-infrared universal model detection method of light physical property close fruit quality index | |
| CN104596957A (en) | Estimation method for content of copper in soil on basis of visible-light near-infrared spectrum technology | |
| CN104020127B (en) | A kind of near infrared spectrum is utilized quickly to measure the method for inorganic elements in Nicotiana tabacum L. | |
| Lu et al. | Quantitative determination and characteristic wavelength selection of available nitrogen in coco-peat by NIR spectroscopy | |
| CN101210875A (en) | Damage-free measurement method for soil nutrient content based on near infrared spectra technology | |
| CN103954567A (en) | Soil salinity determining method based on continuum removal method | |
| CN101609042A (en) | Hand-held soil nutrient nondestructive measurement system based near infrared spectrum | |
| CN104502288A (en) | Soil lead content measurement method using visible and near-infrared spectroscopy technology | |
| CN103344597B (en) | Anti-flavored-interference near infrared non-destructive testing method for internal components of lotus roots | |
| CN103196838A (en) | Hyperspectral remote sensing monitoring method for coastal estuary eutrophication | |
| CN113111799B (en) | Cultivated land soil fertility level monitoring method based on ensemble empirical mode decomposition | |
| CN103940748A (en) | Citrus canopy nitrogen content prediction and visualization method based on hyperspectrum technology | |
| CN105954207A (en) | Method for detecting content of chlorophyll b in canopy of jujube tree | |
| CN104596943A (en) | Indoor spectral layered measuring method for poisonous and harmful elements at mine reclamation area | |
| CN106501255A (en) | A kind of satellite remote-sensing monitoring method of jujube tree canopy Chlorophyll content | |
| CN114486783A (en) | Winter wheat field soil moisture inversion method based on unmanned aerial vehicle multi-source remote sensing | |
| CN106504240A (en) | A kind of satellite remote-sensing monitoring method of jujube tree canopy Chlorophyll-a Content | |
| CN106248468A (en) | A kind of detection method of humic acids from different soils content | |
| CN106092911A (en) | A kind of detection method of jujube tree canopy phosphorus content | |
| CN106338495A (en) | Method for detecting content of organic carbon in salinity soil | |
| CN106644955A (en) | Method for detecting calcium carbonate content of saline soil | |
| Yanmin et al. | Soil moisture monitoring using hyper-spectral remote sensing technology | |
| CN104730027A (en) | Method for determining wheat stripe rust disease uredospore germination rate by utilizing near-infrared spectroscopy | |
| CN106092912A (en) | A kind of detection method of jujube tree canopy moisture | |
| CN111612368B (en) | Ionic rare earth mining area woodland soil nitrogen environmental risk evaluation method and application method |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |