Study on data collection of hydrogeological map of water resources and groundwater resources evaluation:An example of Henan
In order to evaluate the current situation of groundwater resources from multiple aspects,this pa-per studies the data collection of hydrogeological map of water resources and the evaluation method of groundwater resources.This method uses GIS system and unmanned aerial vehicle(UAV)to acquire hydro-geological image of water resources.After atmospheric radiation error correction,image denoising and image data fusion,the hydrogeological map data of water resources are obtained and the groundwater resources e-valuation index system is established.The evaluation model of groundwater resources is constructed by using the analytic hierarchy process and GIS spatial overlay analysis method,and the evaluation grade of groundw-ater resources is output with each evaluation index as the model input.Finally,Henan Province is taken as the research object,the experimental result shows that this method can quickly draw high-precision hydro-geological map of water resources,and can evaluate the use function of water resources from multiple aspects with a good result.It can provide an effective technical method for the rational planning and utilization of wa-ter resources.
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