The Evaluation of Land Quality in Zhangye-Yongchang Region, Gansu Province
详细信息
- 责任者：Liu Wenhui (Gansu Institute of Geological Survey ; Lanzhou 730070 ; China)
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：37(1)
- 关键词：土壤质量评价 ; soil quality assessment ; 甘肃 ; Gansu Province
- 页码：p.132-137
- 图表：illus., 5 tables, 6 refs.
- 分类号：1800
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
With the soil element content distribution in Zhangye-Yongchang region as the main basis and on the basis of analyzing the soil pollution situation and the status of the beneficial elements in the survey region,the authors selected six kinds of soil quality evaluation indices,such as necessary major elements,necessary trace elements,beneficial elements and harmful heavy metal elements,and,according to the weight threshold calculated results of various indices and the membership function calculation model,divided the soil quality of the survey region into five grades,i.e.,high-quality,superior,fine,moderate and bad,which possess 4.88%,47.21%,29.08%,14.49% and 4.34% of the total area of the survey region respectively.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |