甘肃省武威地区土地质量地球化学评估  

GEOCHEMICAL ASSESSMENT OF SOIL QUALITY IN WUWEI DISTRICT, GANSU PROVINCE

作　　者：李春亮[1] 吴永强[1] 王翔[1] 张炜[1] 

机构地区：[1]甘肃省地质调查院,甘肃兰州730000

出　　处：《甘肃地质》2017年第1期40-48,共9页Gansu Geology

基　　金：项目经费来源"全国土壤现状调查与污染防治"所属预算项目"全国多目标地球化学调查";项目编码:GZTR20070114

摘　　要：利用甘肃省武威地区1∶25万多目标区域地球化学调查数据,通过评估指标筛选、指标权重赋值、隶属函数的计算及土地等级的划分,对该地区进行了土地质量地球化学评估,最终将测区土壤质量划分为优质、优良、良好、中等、差等5个等级。结果显示:测区内土地质量良好以上等级的土壤占全区面积的81.05%,中等级别土壤占全区总面积的5.02%,差等级的土壤占全区总面积的13.93%。研究表明,武威地区总体土地质量良好,适宜农牧业的发展。The assessment of soil quality is a much necessary work for optimization, configuration, and sustainable utilization of land source and sustainable development of social economic. Through selection, assignment of weight for geochemical proxies, calculation of membership function and classification of soil quality based on the results of multiple-proxy regional geochemical survey with a scale of 1 to 2.5×105 in Wuwei, Gansu province, five levels of excellent, good, fine, moderate and bad of land quality have been obtained in the study area. The results of geochemical assessment of the land quality indicated that the percent of land that above the fine level in the study area is 81.05%, and the percent of moderate and bad level is 5.02% and 13.93% respectively. Suitable for the development of farming and animal husbandry.

关 键 词：土地质量 地球化学评估 武威地区 土壤肥力 土壤环境 

分 类 号：S151.9[农业科学—土壤学]