『公告』 预祝您龙年大吉，万事如意, 过节期间， 大家如需数据服务，请拨打400 或直接添加客服微信，再祝大家龙年，心想事成。
关注我们 新浪 腾讯
数据服务 3S知识库 行业新闻
数据订购
销售咨询
电话：13911690905
微信：13911690905
邮箱： 2206260@qq.com
综合咨询：2206260
2863548516
2629602953
首页 -> 文献共享 -> 外文文献-> 正文

The impact of land use on soil properties in a karst agricultural region of Southwest China:a case study of Xiaojiang watershed, Yunnan

作者：Jiang Yongjun   出版商：Geography Sciences   出版日期：2006 年 1 月
Abstract:Supported by RS and GIS,the land use change from 1982 to 2003 were analyzed and the impacts of land use changes on pH value,organic matter,total N,total P,total K,available N,available P,and available K in soil of Xiaojiang watershed,a typical karst agricultural region of YunnanProvince,Southwest China were assessed.The following aspects are concluded.(1)The total land use converted during the past 20 years in Xiaojiang watershed covers an area of 610.12 km2, of which 134.29 km2 of forestland was converted into cultivated land, and 210 km2 of unused land was converted into cultivated land. (2) The rapid growth of population and the economic development were the main driving forces of land use change. (3) With the change in land use, the soil properties have been changed significantly. The pH, organic matter, total N, total P, total K, available N, available P and available K in soil in 1982 were 6.3, 38.02 g kg-1, 1.86 g kg-1, 1.63 g kg-1, 10.94 g kg-1, 114.42 g kg-1, 11.65 mg kg-1and 64.69 mg kg-1g, respectively; and those in 2003 were 6.73, 25.26 g kg-1, 1.41 g kg-1, 0.99 g kg-1, 12.6 g kg-1, 113.43 mgkg-1, 11.11 mg kg-1and 151.59 mg kg-1, respectively. Pared samples t-test of the tested indices of soil properties indicate that those indices have changed significantly during the last 20 years. But the soil properties changed differently, due to the differences in land use change. (4) Also, with the change in land use and management measures of soil, the modifications in soil properties which developed from carbonate rocks were more sensitive than those in the soil developed from sandstone.
本站共享资料便于大家学习，如您需要某些资料数据，可以注册向客服索取。
相关数据
暂无相关数据！
相关文章
暂无相关文献！
●  上一篇： Classifying environmentally significant urban land uses with satellite imagery     ●  下一篇： 竞奏共鸣下的 “ 对话 ” ——— 从 《 地图 》 解读谭盾音乐    
声明：本站文献资源来源于网络，仅供学习交流使用，不得以任何形式用于商业用途，请于浏览后24小时内删除。如有疑问欢迎与我们联系，感谢您的支持。
      京ICP备2025132830号-1 京公网安备 号