Distributed-type river basin water deficit calculating method based on terrain and soil characteristics
A soil water shortage, distributed technology, applied in the field of water cycle of water conservancy projects, can solve the problems of determining the soil water shortage, low degree of theoretical model structure, etc.
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[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific application examples.
[0043] combine figure 1 , a distributed basin water shortage measurement method based on topography and soil characteristics proposed by the present invention, the general idea is based on GIS (Geographic information system, geographic information system) to generate digital watershed water system, to divide the drainage basin terrain index grid And soil characteristic parameter grid as a technical means, combined with the program to analyze the distribution of soil and topographic index in each sub-watershed, extract the distribution of water shortage in each sub-basin, and finally build the water shortage calculation model of the watershed. Implementing the concrete steps of the present invention comprises:
[0044] Step 1: Basic data processing of the underlying surface of the watershed. Specifically, based on DEM (Digit...
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