[1]XIAO Lian-gang,ZHANG Jian-ming.Assessment of Soil Comprehensive Nutrients Status in Irrigation District of Yellow River Based on GIS[J].Research of Soil and Water Conservation,2010,17(05):273-276.
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Assessment of Soil Comprehensive Nutrients Status in Irrigation District of Yellow River Based on GIS
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 05
Page number:
273-276
Column:
Public date:
2010-10-20
- Title:
- Assessment of Soil Comprehensive Nutrients Status in Irrigation District of Yellow River Based on GIS
- Keywords:
- soil nutrient; comprehensive evaluation; GIS
- CLC:
- S158
- DOI:
- -
- Abstract:
- The precision agriculture is the development direction of the future agriculture and investigating the soil properties and the spatial variability of the productivity is the basic research content of the precision agriculture. In this paper, soil fertility evaluation was conducted for the farmlands in Lingwu farm which is located in irrigation district of Yellow river based on the techniques of Geographic Information System (GIS). ArcGIS software was adopted for spatial data collection, processing and analysis. PCA was applied to judge the weight of each evaluation factor, based on the method of fuzzy mathematics, membership functions were set up to calculate the value of all evaluation factors. Soil comprehensive nutrient level was graded according to the comprehensive assessment values. The evaluation results were mapped according to Kriging method using ArcGIS software. The maps show that the soil comprehensive fertility decreases obviously from north and west corners which are the two extreme high value area to south east corner which are the extreme low value area.
- References:
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Last Update:
1900-01-01