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Study on Approaches of Land Suitability Evaluation forCrop Production Using Geographic Information System

文献类型： 会议论文

第一作者： Li Linyi

作者： Li Linyi 1 ; Zhao Jingyin 1 ; Yuan Tao 1 ; Liu Zhaoli 2 ;

作者机构： 1.Shanghai Academy of Agricultural Sciences, China

2.Northeast Institute of Geography and Agroecology, CAS, China

关键词： Land Suitability Evaluation;Crop Production;climatic potential productivity;grid segmentation;GIS

会议名称： World Congress on Computers in Agriculture and Natural Resources

主办单位：

页码： 289-294

摘要： In this paper, an approach to assessing ecological suitability of crop growth was developed using GIS, through a case study of maize planting in Jilin Province, in the north-east of China, in order to improve the accuracy and objectivity of the evaluation and promote the rationality of crop distribution and increase the efficiency of the agro-resource utility. Climate and soil conditions in the region were taken into consideration in the research. The crop potential productivity under the climatic condition of 46 meteorological stations in the region, namely photo-temperature-water climatic potential productivity, were calculated based on the meteorological date of the p precipitation, temperature, wind speed and sunshine hours from 1980 to 2006, and used as index to evaluate the climatic suitability for crop growth. The point data were interpolated in a GIS environment and formed climatic suitability map. The assessment of soil suitability for crop growth was derived from soil fertility map drawing on the basis of information on 12 parameters, such as terrain, depth of soil body, thickness of black earth, soil erosion and organic mater. The ecological suitability map is completed using methods of spatial overlay in GIS. Comparing with the crop yield map that based on the statistical yield of 30 years in every county, the result of ecological suitability assessment is consistent with the yield. So this method is feasible to assess the ecological suitability in the region.

分类号： S126-532

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