Land Quality Geochemical Survey And Application Performance Evaluation

The paper summarizes finished land quality geochemical survey achievements in 13 areas of 5 provinces in northwest China,base on land quality geochemical survey conducted by Geological Survey China,Ministry of Land and Resources.The evaluation indexes are selected from three aspects of input,output and application effect,and the land quality geochemical survey and application performance evaluation are established.According to the actual situation of the land quality geochemical survey in Northwest China,the indexes were selected and analyzed by the analytic hierarchy process(AHP).The northwest area of each area of land quality geochemical survey,the survey results were evaluated by application,the area of land quality geochemical survey and the results of application of the performance evaluation results obtained in the five northwest provinces land quality geochemical survey and results of evaluation results should be performance,according to the evaluation results and ranking of the provinces of land quality geochemical survey and results of application performance.The main research contents and conclusions are as follows:Through the evaluation,the five northwestern provinces of land quality geochemical survey performance evaluation is divided into 2 levels,a good area for Gansu,Shaanxi,Ningxia,qualified area of Qinghai,Xinjiang;the five northwestern provinces of land quality geochemical survey evaluation is divided into 2 grades,excellent area for the Shaanxi area,Qinghai,good Xinjiang,Ningxia,Gansu;the five northwestern provinces of land quality geochemical survey and the results of application of performance evaluation is divided into 2 grades,excellent provinces as Gansu,Shaanxi,and Ningxia provinces as well as Qinghai,Xinjiang.According to the evaluation results of the analysis of the current application of geochemical survey and results of land quality in northwest area,and puts forward some suggestions on two aspects of land quality geochemical survey and investigation results of application problems.