测绘通报 ›› 2017, Vol. 0 ›› Issue (11): 101-107,114.doi: 10.13474/j.cnki.11-2246.2017.0357

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Research on Wheat's Nature Water Stress Drought Evaluation Models Based on GIS

ZHU Yihan1,2, XUE Fengchang1,2, TANG Buxing1,2, HUANG Minmin1,2   

  1. 1. College of Geography and Remoting Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2. Key Laboratory of Meteorological Disaster of Ministry of Education(NUIST), Nanjing 210044, China
  • Received:2017-03-09 Online:2017-11-25 Published:2017-12-07

Abstract: Wheat is one of the important food crops in China.Wheat drought disasters affect food security seriously in China.Assessing wheat drought is particularly important.Nature water stress model is one of the main model of the evaluation of wheat drought conditions.This model involves lots of data types,model calculation is complicated,affecting the actual application of the model.The natural water stress model is established into GIS logical calculation model by ModelBuilder.The results showed that the natural water stress drought evaluation models based on GIS transformed complex mathematical model into simple GIS grid computing.It realized counting process automation,intergration,spatial visualization.And the model has a clear convenient for modification,maintenance of data.

Key words: GIS, drought, nature water stress model, ModelBuilder

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