摘要
以重庆巫山县典型坡改梯地为例,选取5种不同土地利用方式对土壤肥力质量进行评价,结果表明:研究区的土壤肥力整体处于中下等水平,5种地类按土壤肥力大小排序为荒地(0.501)>林地(0.431)>菜地(0.427)>园地(0.390)>粮田(0.349),农耕用地的土壤肥力明显低于林地和荒地,可见退耕还林还草具有明显的土壤培肥作用,人类活动和土地利用方式对土壤质量有很大影响,合理规划土地利用方式对土壤质量提高有重要作用。
The paper selected five different land use types to evaluate the soil fertility quality by taking typical terracing of sloping fields of Wushan County in Chongqing as an example. The outcomes show that the overall fertility of studied area is lower. The sequence of the following five different land use types according to soil fertility are wasteland( 0. 501) > forest land( 0. 431) > vegetable plot( 0. 427) > garden plot( 0. 390) > grain field( 0. 349). The soil fertility of agricultural land is obviously lower than that of forest land and wasteland. It shows that the project of conversion cropland to forest and grassland has the obvious function of soil fertilization and the influence of human activities and the ways of land use is great to the soil quality. It is of important to improve the soil quality through rational planning of land use.
出处
《中国水土保持》
2014年第3期35-38,69,共4页
Soil and Water Conservation in China
基金
重庆市自然科学基金项目(CSTC2010BB0326)
国家自然科学基金项目(41001168)
国家科技支撑计划项目(2011BAD31B03)
关键词
坡改梯地
土地利用方式
土壤肥力评价
三峡库区
terracing of sloping fields
land use type
soil fertility evaluation
the Three Gorges Reservoir area
作者简介
李培霞（1988-），女，山东潍坊市人，硕士研究生，研究方向为水土保持与荒漠化治理；
通信作者 陈国建（1975-），男，四川达县人，副教授，博士，主要研究方向为水土保持和生态修复。
