CN103020425B - A kind of control method for the non-point pollution of North China Plain district - Google Patents
A kind of control method for the non-point pollution of North China Plain district Download PDFInfo
- Publication number
- CN103020425B CN103020425B CN201210475988.8A CN201210475988A CN103020425B CN 103020425 B CN103020425 B CN 103020425B CN 201210475988 A CN201210475988 A CN 201210475988A CN 103020425 B CN103020425 B CN 103020425B
- Authority
- CN
- China
- Prior art keywords
- nutrient
- soil
- pollution
- soil nutrient
- control
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fertilizing (AREA)
- Fertilizers (AREA)
Abstract
The present invention is a kind of North China Plain district non-point source pollution control technology based on source control.The invention belongs to non-point source pollution control field.This control technology mainly comprises: 1) nutrient balance estimation: its step comprises, the collection of basic data; Soil nutrient data monitoring is analyzed; Spatial Interpolation Method is utilized to obtain the space distribution information of soil nutrient; Utilize soil nutrient balance total amount and intensity in soil nutrient apparent equilibrium model (OECD) Study on Accounting district farmland sysrem, and evaluation study district soil nutrient salt deficiency on this basis, determine different applying quantity of chemical fertilizer.2) scheme working-out: according to result of calculation, is recommended the recommendation reduction of the chemical fertilizer application in different plot, this study area, is realized the Sources controlling in each plot by Radiation Source Control; To run off high risk region for the pollution in soil nutrient evaluation, be aided with the means of original position resistance control, to realize the most effectively controlling non-point pollution.This technology, for North China Plain district feature, can realize the control to the non-point pollution of North China Plain district preferably, simultaneously this method simple, intuitive, and data are easy to get, and have stronger generalization in North China Plain district.
Description
Technical field
The invention belongs to non-point source pollution control field, specifically one is with source item abatement for core, and in-situ control is auxiliary North China Plain district non-point source pollution control technology.
Background technology
Non-point pollution refers to the water pollution that dissolubility or solid pollutant import receiving water body and cause under precipitation and runoff souring.Be characterized in space-time is difficult to fixed point monitoring, with the environmental baseline such as air, the hydrology, soil, vegetation, geology, landforms, landform and mankind's activity closely-related, there is uncertainty, and directly can form air, soil, water and to pollute.Compared with point-source pollution, the space-time unique of non-point pollution is wider, and uncertainty is larger, and composition, process are more complicated.At present, the point-source pollution discharge comprising many countries of China is controlled preferably.In contrast to this, non-point pollution research and administer then also be in the starting stage.In recent years, the fast development of industry is cultivated in rural areas in our country livestock and poultry cultivation and farmland, a large amount of breeding wastewaters and excessive chemical fertilizer application, the nutrients such as a large amount of nitrogen, phosphorus are made to enter water body, cause body eutrophication phenomenon serious, hydrobiological living environment is destroyed, and local aquatic ecosystem is lacked of proper care.Therefore, how effectively realizing the control of agricultural nonpoint source pollution, is the key point solving China's water environmental problems.
China's North China Plain district climate characteristic is drought, and in its region, pondage and area all present diminishing trend.China's North China Plain district non-point pollution has following characteristics: 1) region of no relief because physical features is smooth, river boundaries is fuzzy, water movement is slow, physical geographic environment various, the product of its non-point pollution feature of confluxing obviously is different from mountain area, knob.Regional pollution thing transportion and transformation is comparatively complicated, has dispersiveness, popularity and transition process and has height random; 2) relative to high rainfall region, south, North China Plain weather is comparatively arid, and self water percentage of its soil is lower.Therefore daily irrigation and small intensity rainfall are all difficult to produce Non-point Source Pollutants, and rainwash and its Non-point Source Pollutants carried only produce when larger rainfall or heavy rain usually.Therefore, the non-point pollution of North China Plain district has hysteresis quality and ambiguity, no matter carries out centralized control in theory or all infeasible in practice at Watershed Scale.Based on North China Plain district non-point pollution feature, relatively traditional process and end-of-pipe control, " source control " should be realize the core that the non-point pollution of North China Plain district effectively controls.
Based on above understanding, it is the major control means that the non-point pollution of North China Plain district is cut down that the present invention proposes source item abatement, is aided with the important idea of original position resistance control techniques in addition, to realize the effective control to the non-point pollution of North China Plain district.
Existing document:
Yang Linzhang, Sun Bo. Farmland Ecosystems In China Nutrient cycling and balance and management [M] thereof. Science Press, 2008.
Zhang Fusuo. Formula fertilization by soil testing [M]. Science Press, 2011.
Summary of the invention
The object of the present invention is to provide a kind of control method for the non-point pollution of North China Plain district,
1) step of basic data database is set up, by the 3S technology be made up of GIS, RS, GPS technology, build study area spatial database, described database comprises land-use map, soil type map, described land-use map is obtained by decipher remote sensing image, the basic information of field in North China Plain district is collected by investigation on the spot and data investigation, described basic information of field comprises local climate, landform, farmland sowing, irrigation, rate of fertilizer application, agrotype, crop-planting, crop harvesting amount, completes basic data database sharing;
2) step of sample collection and monitoring, the sampling of GPS locating is carried out to study area, Demonstration Plot sampling plot is arranged with 500m grid distance, and locate with GPS, record its latitude and longitude coordinates, the sampled point of more than five or five is set by diagonal method in each plot, pedotheque Homogeneous phase mixing is got in each plot, carry out soil nutrient data analysis, analysis item comprises available nitrogen, rapid available phosphorus, available potassium;
3) obtain the step of soil nutrient space distribution, with soil sample monitoring for benchmark, utilize space interpolation kriging analysis method or inverse distance weight, generate the soil nutrient space distribution information of whole study area;
4) utilize soil nutrient apparent equilibrium model, obtain the step of soil nutrient status and Spatial Variability thereof, according to Nutrient element input and Nutrient of expenditure, obtain nutrient balance amount; Evaluate Nutrient element input and Nutrient of expenditure result of calculation, carry out the rich scarce degree of soil nutrient and evaluate;
5) step of non-point source pollution control scheme working-out and enforcement, according to the applying quantity of chemical fertilizer of the rich scarce degree evaluation result of soil nutrient apparent equilibrium model soil nutrient and study area, works out the non-point source pollution control scheme in North China Plain district;
A) Radiation Source Control, according to the model calculation, recommends the reduction of chemical fertilizer application to different plot, this area, to be realized the Sources controlling to study area non-point pollution by Radiation Source Control;
B) original position resistance control, is the region of 1 grade and 2 grades for the rich scarce degree grade evaluation of soil nutrient, is aided with the means of original position resistance control, to realize the most effectively controlling non-point pollution;
Described step 2) in, sampling soil sample should be 0 ~ 20cm farmland topsoil, and sampling should avoid limes marginis, ridge, compost place privileged sites as far as possible;
Described step 3) in, in soil, the mensuration of each element all should adopt National Standard Method, and wherein available nitrogen employing alkaline hydrolysis diffusion method, rapid available phosphorus employing NaHCO3 lixiviate-ICP method, available potassium then adopt ammonium acetate lixiviate-ICP method;
Described step 4) in, the computing formula that soil nutrient apparent equilibrium model obtains nutrient balance amount is: Balance=(Ftlz+Mnr+Seed+Irr+Dpzt+Bnf)-(Hvst+Runoff+Leach+GNH
3+ GNO
x)
In formula, Balance represents nitrogen phosphorus balance amount, Ftlz represents fertilizer nitrogen phosphorus input quantity, Mnr represents fertilizer nutrient input amount, Seed represents seed nutrient input amount, Irr represents irrigation nutrient input amount, Dpzt represents atmospheric sedimentation nutrient input amount, Bnf represents biological nitrogen fixation nitrogen addition amount, and Hvst represents that crop takes away nutrient output amount, and Runoff represents rainwash nutrient output amount, Leach represents leaching nutrient output amount, GNH3 represents Ammonia valatilization nitrogen output quantity, and GNOx represents denitrification nitrogen output quantity, and in formula, each Parameter units is ton (t);
Described step 4) in, the rich scarce degree evaluation of Soil Nutrients in Farmland is divided into 5 ranks, determines its corresponding rich scarce degree rank according to soil nutrient content;
The evaluation criterion of the rich scarce degree of Soil Nutrients in Farmland
Described step 5) in, original position resistance control theory stays put by Non-point Source Pollutants, the runoff of taking measures to stop pollutant to produce with rainfall enters water body, cut off the pollution channel of presence of pollution sources, major control method comprises Tree Precise Fertilization, novel Slow/Controlled Release Fertilizers method, water-fertilizer integral and isolation strip resistance control method.
In other words, the object of this invention is to provide a kind of control technology for the non-point pollution of North China Plain district.The present invention is realized by following steps:
1) basic data database is set up: by the 3S technology be made up of GIS, RS, GPS technology, build study area spatial database, comprise Digital height model, land-use map, soil type map, Digital height model and land-use map are obtained by decipher remote sensing image; By investigation on the spot and data investigation, collect local climate, landform, farmland sowing, irrigation, rate of fertilizer application, agrotype, crop-planting, crop harvesting amount at interior this area's basic information of field, based on above step, complete basic data database sharing.
2) sample collection and monitoring: carry out the sampling of GPS locating to study area, arranges Demonstration Plot sampling plot with 500m grid distance, and with GPS location, records its latitude and longitude coordinates; Arrange the sampled point of more than 5 or 5 in each plot by diagonal method, get pedotheque Homogeneous phase mixing to each plot, carry out soil nutrient data analysis, analysis item comprises available nitrogen, rapid available phosphorus, available potassium;
3) soil nutrient space distribution is obtained: with soil sample monitoring for benchmark, utilize space interpolation as kriging analysis method, inverse distance weight, generate the soil nutrient space distribution information of whole study area;
4) utilize soil nutrient apparent equilibrium model (OECD), obtain soil nutrient status and Spatial Variability thereof; According to Nutrient element input and Nutrient of expenditure, obtain nutrient balance amount (Balance); Evaluate Nutrient element input and Nutrient of expenditure result of calculation, carry out the rich scarce degree of soil nutrient and evaluate;
5) non-point source pollution control scheme working-out and enforcement: according to the applying quantity of chemical fertilizer of the rich scarce degree evaluation result of OECD model soil nutrient and study area, works out this area's non-point source pollution control scheme;
A) Radiation Source Control: according to the model calculation, recommends the reduction of chemical fertilizer application to different plot, this area, to be realized the Sources controlling to study area non-point pollution by Radiation Source Control;
B) original position resistance control: the region for the rich scarce degree grade evaluation of soil nutrient being 1 grade and 2 grades, is aided with the means of original position resistance control, to realize the most effectively controlling non-point pollution;
Described step 2) middle sampling soil sample should be 0 ~ 20cm farmland topsoil, and sampling should avoid limes marginis, ridge, compost place privileged sites as far as possible;
Described step 3) in, in soil, the mensuration of each element all should adopt National Standard Method.Wherein available nitrogen adopts alkaline hydrolysis diffusion method, rapid available phosphorus to adopt NaHCO
3lixiviate-ICP method, available potassium then adopt ammonium acetate lixiviate-ICP method;
Described step 4) in, the computing formula that OECD model obtains nutrient balance amount Balance is:
Balance＝(Ftlz+Mnr+Seed+Irr+Dpzt+Bnf)-(Hvst+Runoff+Leach+GNH
3+GNO
X)
In formula: Balance represents nitrogen phosphorus balance amount, Ftlz represents fertilizer nitrogen phosphorus input quantity, Mnr represents fertilizer nutrient input amount, and Seed represents seed nutrient input amount, and Irr represents irrigation nutrient input amount, Dpzt represents atmospheric sedimentation nutrient input amount, Bnf represents biological nitrogen fixation nitrogen addition amount, and Hvst represents that crop takes away nutrient output amount, and Runoff represents rainwash nutrient output amount, Leach represents leaching nutrient output amount, GNH
3represent Ammonia valatilization nitrogen output quantity, GNO
xrepresent denitrification nitrogen output quantity, in formula, each Parameter units is ton (t);
Described step 4) in, the Evaluation of Soil Nutrients standard studying foundation for many years in the North China Plain such as the rich scarce degree evaluation method reference Yang Linzhang of Soil Nutrients in Farmland etc., Zhang Fusuo, rich for soil nutrient scarce degree is divided into 5 ranks, determines its corresponding rich scarce degree rank according to soil nutrient content;
The evaluation criterion of the rich scarce degree of Soil Nutrients in Farmland
Described step 5) in, original position resistance control theory stays put by Non-point Source Pollutants, and the runoff of taking measures to stop pollutant to produce with rainfall enters water body, cuts off the pollution channel of presence of pollution sources.Major control method comprises Tree Precise Fertilization, novel slow/controlled release fertilizer technology, water-fertilizer integral and isolation strip resistance control techniques;
The North China Plain district non-point source pollution control technology based on source control theory that the present invention proposes, with source item abatement for core technology, and is aided with the theory of in-situ control, can realizes the control to the non-point pollution of North China Plain district preferably.
Accompanying drawing explanation
Fig. 1 is the North China Plain district non-point source pollution control techniqueflow chart based on source control theory.
Embodiment
In order to clearer, the present invention is set forth, further illustrate the present invention with case study on implementation, but be not used for limiting the scope of the invention.
Fig. 1 is the North China Plain district non-point source pollution control techniqueflow chart based on source control theory.
Certain region of no relief, basin, North China, the total area is 15.64km
2, cultivated area is 13.30km
2, account for 85.0% of this region of no relief total area.This study area gathers in the crops summer corn at the beginning of 10 months every year by the end of September, turns over and nuzzles into upper soll layer (20cm), apply fertilizer to the subsoil, sow winter wheat subsequently after corn straw smashing.In spring next year, according to the growth of cereal crop seedlings, at the beginning of 3 ~ 4 months, impose urea with irrigation, fertilization mode is that surface is sowed.Mid or late July spreads fertilizer over the fields urea with irrigation, or spreads fertilizer over the fields with rainfall.Irrigate at any time according to soil moisture content situation in breeding time, irrigation method is broad irrigation.
Table 1 study area present status of land utilization
1) soil collecting and sample analysis: in experiment, with 500m grid distance layout study district agricultural land soil sampling plot, and positions by GPS technology, record sampled point latitude and longitude coordinates.Farmland massif size is 10m × 10m, in this plot, arrange five sampling points by diagonal method, gathers 0 ~ 20cm degree of depth farmland topsoil.This study area gathers mixed soil sample 86 altogether.
Earth sample transports laboratory back and after Homogeneous phase mixing, point fresh sample and air-dry sample, remove large particle, and 2mm sieve is fixed.Adopt alkaline hydrolysis diffusion method, NaHCO respectively
3lixiviate-ICP method, ammonium acetate lixiviate-ICP method measures soil available nitrogen, rapid available phosphorus and available potassium.
2) study area Analysis on Soil Nutrients: in step 1) measuring basis on, adopt Krieger (Kriging) Spatial Interpolation Method analysis and research district soil nutrient concrete condition.Adopt the evaluation method of the rich scarce degree of soil nutrient, this study area farmland nutrient situation is evaluated.Its result is as shown in table 2:
Table 2 study area Soil Nutrients in Farmland situation
3) foundation of soil nutrient apparent equilibrium model (OECD): utilize OECD model, according to soil testing and fertilizer recommendation experiment and investigation the data obtained, analyze expenditure and the income situation of this study area soil nutrient, grasp this study area soil nutrient nitrogen phosphorus balance situation.
This study area farmland nutrient income situation, as shown in table 3:
Table 3 study area farmland nutrient income (kg/ha)
This study area farmland nutrient exports situation, as shown in table 4:
Table 4 study area farmland nutrient exports (kg/ha)
According to study area farmland nutrient constrained input, can obtain farmland nutrient balance average evaluation, its result is as shown in table 5:
Table 5 study area farmland nutrient balance situation
Can draw thus, the nutrient 76% ~ 99% absorbed in this study area crop growth process comes from fertilising, comprises using of chemical fertilizer and fertilizer.In study area, farmland ecosystem nitrogen, phosphorus all have a large amount of surpluses, surplus amount accounts for 45.27%, 77.26% of gross income respectively, the a large amount of Nutrient surplus of farmland ecosystem will cause high environment potential loss risk, and the unreasonable of chemical fertilizer is used, and is the main cause of a large amount of surplus of farmland nutrient.Meanwhile, the nutrient (comprise atmospheric sedimentation, irrigate and bring into and biological nitrogen fixation) in non-Term Fertilization source, the effect in study area is also very important.The ratio shared in gross income of non-Term Fertilization nitrogen, phosphorus, the potassium nutrition brought into is followed successively by: 13.78%, 0.39%, 23.82%, should be regarded as important nutrient source and resource in farmland ecosystem nutrient management.
Based on above research, obtain the actual amount of application of this study area chemical fertilizer and recommend use amount, result is as shown in table 6:
The actual amount of application of table 6 study area chemical fertilizer and recommend use amount (kg/ha)
Wherein, the applying quantity of chemical fertilizer that chemical fertilizer recommend use amount is chemical fertilizer in soil surplus amount when being zero.
The farmland fertilizer turnover rate that associative list 4 calculates, namely nitrogenous fertilizer, phosphate fertilizer are respectively 0.83%, 0.29%, and loss intensity N is 3.55kg/ha, P
2o
5for 1.21kg/ha (in phosphorus, namely TP is 2.77kg/ha).Assuming that this area's farmland fertilizer turnover rate is constant, be 1.21kg/ha, P according to the study area unit area loss intensity N after soil testing and fertilizer recommendation
2o
5for 0.20kg/ha (in phosphorus, namely TP is 0.45kg/ha).By the inventive method, study area agricultural surface runoff loss (i.e. farmland non-point pollution) TN, TP reduction rate reaches 66%, 84% respectively.
Based on above step, the source item that can realize this region non-point pollution is cut down.
4) study area non-point pollution original position resistance control is recommended: based on soil testing and fertilizer recommendation the data obtained, selects high pollution loss district to carry out comprising the non-point pollution original position resistance control that Tree Precise Fertilization, novel slow/controlled release fertilizer technology, water-fertilizer integral and isolation strip resistance control techniques are measure.This example, due to time funds restriction, does not carry out this some work.But the non-point source pollution control technology recommended to the utmost in conjunction with this theory.
Conclusion: the inventive method, the core of cutting down using soil testing and fertilizer recommendation as source item, and in conjunction with original position resistance control theory.The inventive method has remarkable result to North China Plain district non-point source pollution control.
Claims (1)
1., for a control method for North China Plain district non-point pollution, it is characterized in that:
1) step of basic data database is set up, by the 3S technology be made up of GIS, RS, GPS technology, build study area spatial database, described database comprises land-use map, soil type map, described land-use map is obtained by decipher remote sensing image, the basic information of field in North China Plain district is collected by investigation on the spot and data investigation, described basic information of field comprises local climate, landform, farmland sowing, irrigation, rate of fertilizer application, agrotype, crop-planting, crop harvesting amount, completes basic data database sharing;
2) step of sample collection and monitoring, the sampling of GPS locating is carried out to study area, Demonstration Plot sampling plot is arranged with 500m grid distance, and locate with GPS, record its latitude and longitude coordinates, the sampled point of more than five or five is set by diagonal method in each plot, pedotheque Homogeneous phase mixing is got in each plot, carry out soil nutrient data analysis, analysis item comprises available nitrogen, rapid available phosphorus, available potassium;
3) obtain the step of soil nutrient space distribution, with soil sample monitoring for benchmark, utilize kriging analysis method or the inverse distance weight of space interpolation, generate the soil nutrient space distribution information of whole study area;
4) utilize soil nutrient apparent equilibrium model, obtain the step of soil nutrient status and Spatial Variability thereof, according to Nutrient element input and Nutrient of expenditure, obtain nutrient balance amount; Evaluate Nutrient element input and Nutrient of expenditure result of calculation, carry out the rich scarce degree of soil nutrient and evaluate;
5) step of non-point source pollution control scheme working-out and enforcement, according to the applying quantity of chemical fertilizer of the rich scarce degree evaluation result of soil nutrient apparent equilibrium model soil nutrient and study area, works out the non-point source pollution control scheme in North China Plain district;
A) Radiation Source Control, according to the model calculation, recommends the reduction of chemical fertilizer application to different plot, this North China Plain district, to be realized the Sources controlling to study area non-point pollution by Radiation Source Control;
B) original position resistance control, is the region of 1 grade and 2 grades for the rich scarce degree grade evaluation of soil nutrient, is aided with the means of original position resistance control, to realize the most effectively controlling non-point pollution;
Described step 2) in, sampling soil sample should be 0 ~ 20cm farmland topsoil, and sampling should avoid limes marginis, ridge, compost place privileged sites as far as possible;
Described step 3) in, in soil, the mensuration of each element all should adopt National Standard Method, and wherein available nitrogen adopts alkaline hydrolysis diffusion method, rapid available phosphorus to adopt NaHCO
3lixiviate-ICP method, available potassium then adopt ammonium acetate lixiviate-ICP method;
Described step 4) in, the computing formula that soil nutrient apparent equilibrium model obtains nutrient balance amount is:
Balance＝(Ftlz+Mnr+Seed+Irr+Dpzt+Bnf)-(Hvst+Runoff+Leach+GNH
3+GNO
X)
In formula, Balance represents nitrogen phosphorus balance amount, and Ftlz represents fertilizer nitrogen phosphorus input quantity, and Mnr represents fertilizer nutrient input amount, Seed represents seed nutrient input amount, Irr represents irrigation nutrient input amount, and Dpzt represents atmospheric sedimentation nutrient input amount, and Bnf represents biological nitrogen fixation nitrogen addition amount, Hvst represents that crop takes away nutrient output amount, Runoff represents rainwash nutrient output amount, and Leach represents leaching nutrient output amount, GNH
3represent Ammonia valatilization nitrogen output quantity, GNO
xrepresent denitrification nitrogen output quantity, in formula, each Parameter units is ton (t);
Described step 4) in, the rich scarce degree evaluation of Soil Nutrients in Farmland is divided into 5 ranks, determines its corresponding rich scarce degree rank according to soil nutrient content;
The evaluation criterion of the rich scarce degree of Soil Nutrients in Farmland
Described step 5) in, original position resistance control theory stays put by Non-point Source Pollutants, the runoff of taking measures to stop pollutant to produce with rainfall enters water body, cut off the pollution channel of presence of pollution sources, major control method comprises Tree Precise Fertilization, novel Slow/Controlled Release Fertilizers method, water-fertilizer integral and isolation strip resistance control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210475988.8A CN103020425B (en) | 2012-11-22 | 2012-11-22 | A kind of control method for the non-point pollution of North China Plain district |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210475988.8A CN103020425B (en) | 2012-11-22 | 2012-11-22 | A kind of control method for the non-point pollution of North China Plain district |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103020425A CN103020425A (en) | 2013-04-03 |
| CN103020425B true CN103020425B (en) | 2015-12-09 |
Family
ID=47969023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210475988.8A Expired - Fee Related CN103020425B (en) | 2012-11-22 | 2012-11-22 | A kind of control method for the non-point pollution of North China Plain district |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103020425B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820681A (en) * | 2019-11-05 | 2020-02-21 | 中国科学院地理科学与资源研究所 | Vegetation barrier belt for treating non-point source pollution and water body pollution treatment method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294923B (en) * | 2013-06-09 | 2016-03-30 | 北京师范大学 | Observation procedure and the system of load are flowed out in rice terrace non-point pollution |
| CN105669263A (en) * | 2016-04-22 | 2016-06-15 | 东北农业大学 | Method for optimizing content of phosphorus in compost |
| CN108038087B (en) * | 2017-12-29 | 2021-02-02 | 浙江省公众信息产业有限公司 | Water and fertilizer irrigation decision method, device and system and computer readable storage medium |
| CN109258042B (en) * | 2018-11-20 | 2021-07-23 | 湖南省林业科学院 | Formula fertilization method for adult camellia oleifera forest |
| CN109582755A (en) * | 2019-01-16 | 2019-04-05 | 中国科学院地理科学与资源研究所 | A kind of precision agriculture database implementation method based on grid |
| CN111612368B (en) * | 2020-05-27 | 2023-05-23 | 矿冶科技集团有限公司 | Ionic rare earth mining area woodland soil nitrogen environmental risk evaluation method and application method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677626A (en) * | 2012-05-15 | 2012-09-19 | 临沂大学 | Method for constructing comprehensive control system for small-watershed surface source pollution |
-
2012
- 2012-11-22 CN CN201210475988.8A patent/CN103020425B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677626A (en) * | 2012-05-15 | 2012-09-19 | 临沂大学 | Method for constructing comprehensive control system for small-watershed surface source pollution |
Non-Patent Citations (5)
| Title |
|---|
| Spatial variability of indigenous supplies for N,P and K and its impact on fertilizer strategies for irrigated rice in West Africa;S.M. Haefele et al.;《Plant and Soil》;20050301;第270卷(第1期);57-72 * |
| 中国区域土壤表观氮磷平衡清单及政策建议;陈敏鹏 等;《环境科学》;20070615;第28卷(第6期);1305-1310 * |
| 基于GIS和地统计学的不同尺度水稻田土壤养分时空变异及其机理研究;刘杏梅;《中国优秀博硕士学位论文全文数据库（博士）农业科技辑》;20050915;D043-24 * |
| 基于GIS和地统计学的土壤养分空间变异特征研究;史利江;《中国优秀博硕士学位论文全文数据库（硕士）农业科技辑》;20061215;D043-109 * |
| 森林土壤氮素的转化与循环;陈伏生 等;《生态学杂志》;20041011;第23卷(第5期);126-133 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820681A (en) * | 2019-11-05 | 2020-02-21 | 中国科学院地理科学与资源研究所 | Vegetation barrier belt for treating non-point source pollution and water body pollution treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103020425A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103020425B (en) | A kind of control method for the non-point pollution of North China Plain district | |
| Bouwman et al. | Lessons from temporal and spatial patterns in global use of N and P fertilizer on cropland | |
| Bergeron et al. | Reduced soil nutrient leaching following the establishment of tree-based intercropping systems in eastern Canada | |
| Zemmrich et al. | Driving environmental factors and the role of grazing in grassland communities: a comparative study along an altitudinal gradient in Western Mongolia | |
| Schnyder et al. | Nutrient redistribution by grazing cattle drives patterns of topsoil N and P stocks in a low-input pasture ecosystem | |
| Tao et al. | Reducing interflow nitrogen loss from hillslope cropland in a purple soil hilly region in southwestern China | |
| Olesen et al. | Nitrate leaching losses from two Baltic Sea catchments under scenarios of changes in land use, land management and climate | |
| Qiu et al. | GIS-model based estimation of nitrogen leaching from croplands of China | |
| Guo et al. | Spatial characteristics of ecological stoichiometry and their driving factors in farmland soils in Poyang Lake Plain, Southeast China | |
| Glavan et al. | Finding options to improve catchment water quality—Lessons learned from historical land use situations in a Mediterranean catchment in Slovenia | |
| Burkitt | A review of nitrogen losses due to leaching and surface runoff under intensive pasture management in Australia | |
| Shepherd et al. | A review of quantitative tools for assessing the diffuse pollution response to farmer adaptations and mitigation methods under climate change | |
| Li et al. | Impacts of human activities and climate change on the water environment of Lake Poyang Basin, China | |
| Singh et al. | Regionalisation of nitrate leaching on pasture land in Southern Manitoba | |
| Dogbatse et al. | Influence of acidic soils on growth and nutrient uptake of cocoa (Theobroma cacao L.) varieties | |
| Raddy et al. | Spatial Fertilizer Recommendation Mapping Based on Soil Test Crop Response Equations for Important Crops Using GIS and GPS. | |
| Huang et al. | Control of soil organic carbon under karst landforms: A case study of Guizhou Province, in southwest China | |
| Andrés et al. | Salt and nitrate exports from the sprinkler-irrigated Malfarás creek watershed (Ebro river valley, Spain) during 2010 | |
| Mbibueh et al. | Effects of land Cover/Use change and altitude on soil NPK nutrients in selected areas in the north West region of Cameroon | |
| Guo et al. | Nitrogen budget of a typical subterranean river in peak cluster karst area | |
| Feng et al. | Landform sedimentary contributed to groundwater nitrate vulnerability in multi-alluvial fan aquifer systems in a watershed | |
| Severini et al. | Can't tell a book by its cover: disjointed groundwater contamination and land use in an alluvial aquifer of northern Italy | |
| Ma et al. | Nitrogen load from rural non-point source pollution in suburb area of Shenyang: a case study of Damintun town | |
| Collins et al. | A GIS framework for modelling nitrogen leaching from agricultural areas in the Middle Hills, Nepal | |
| Oladeji et al. | Relative phosphorus phytoavailability of different phosphorus sources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20161122 |