摘要
土壤可蚀性K值作为评价土壤特性的重要参数,是水土保持规划、土地利用评价、水土保持综合治理工程等规划设计工作中的重要基础数据。笔者从贵州省五大石漠化治理类型区的空间角度出发,选择五个典型小流域作为研究对象,应用EPIC模型分析其土壤抗蚀性,探索不同类型石漠化土壤可蚀性的特征及差异,初步认为贵州省岩溶地区总体由北向南K值逐渐增大,峰丛洼地石漠化类型区土壤可蚀性最大,土壤最易侵蚀。
The soil erodibility(K factor) as an important parameter evaluating soil characteristics is theimportant basic data in soil and water conservation planning, land-use evaluation, comprehensive controlengineering project of soil and water conservation. From the angle of space, the authors chose five stonydesertification management areas and five model small watersheds, explored the erodibility and differenceamong different stony desertification soils, the results showed that K factor increased from north to south inGuizhou karst area, and the erodibility was the highest in Fengcong depression.
出处
《中国农学通报》
2017年第29期55-60,共6页
Chinese Agricultural Science Bulletin
基金
贵州省联合基金项目"贵州不同类型石漠化小流域土壤可蚀性K值特征及变异性研究"(黔科合LH字[2014]7172号)
贵州省水利厅科技项目"贵州省石漠化治理工程农林复合经营模式研究"(KT201311)
关键词
石漠化
小流域
EPIC模型
K值
特征
stony desertification
small watershed
EPIC mode
K factor
characteristics