关键词
基于~(137)Cs技术的中国北方农牧交错带土壤侵蚀研究
作者: 姜洪涛   来源: 内蒙古师范大学 年份: 2010 文献类型 : 学位论文 关键词: 土壤侵蚀   农牧交错带   ~Cs   示踪  
描述: ttention, but also agriculture and eco-environmental sustainable development important problems. Farming-pastoral Transitional zone in north China, as our county returning farmland to forest and returning cropping land to grassland are the focus areas, natural environment and socio-economic conditions shown a clear transition characterized by the transition zone of the interpenetration and staggered distribution of agriculture and animal husbandry, which is curbing desertification important ecological barrier, but also ecologically fragile belts.
全文:农田、林地或者是灌丛,因为有了人类活动的参与,造成了不同程度的土壤颗粒的迁移,结果是导致这些土地利用类型产生了不同程度的土壤侵蚀。而基本没有人为活动影响的草地在一定程度上发生土壤侵蚀的机率比较小、程度
< 1
Rss订阅