Agricultural water-saving zoning of Hebei Province based on PCA and ArcGIS spatial analysis
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Abstract:
Agricultural water-saving zoning is the premise of regional agricultural planning.In view of the shortage of water resources in Hebei Province,rational agricultural water-saving zoning is an effective means to improve the efficiency of irrigation water use and agricultural production.In this paper,we selected eight indexes including irrigation water demand index,farmland productivity potential,net primary productivity of crops,soil type,utilization of groundwater,topography,population,and GDP,and we built a water-saving zoning model of Hebei Province through the spatial analysis function of ArcGIS and principal component analysis.According to the model,149 counties/districts in Hebei Province are classified into 3 types:urgent,important,and deferred areas for agricultural wate-saving.According to the characteristics of each region type,we pointed out their existing problems and put forward suggestions for future development.