延安碾庄沟流域梯田与坝地土壤水分对比分析  

Comparison of soil moisture characteristics of terraced field and dammed land in Nianzhuanggou watershed of Yan'an

作　　者：王继夏[1] 孙虎[1] 王祖正[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《干旱地区农业研究》2007年第1期88-93,共6页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金资助项目(49671053);陕西省自然科学基金(2001D03)资助;陕西师范大学校级重点科研项目

摘　　要：以延安碾庄沟小流域为研究对象,对该小流域内梯田地与坝地的土壤水分特征进行分析。结果表明,梯田地与坝地的土壤水分垂直分布有着相似的特点,梯田地和坝地土壤水分的垂直变化可以分为4个层次:土壤水分剧变层;土壤水分活跃层;土壤水分次活跃层;土壤水分相对稳定层。坝地的土壤含水量高于梯田地,且不同的作物类型可以引起土壤水分的变化,说明作物类型与土壤水分状况有一定的关系。Taking the Nianzhuanggou watershed as a research field, the soil moisture characteristics of terraced field and dammed land were analyzed. The fact showed that the vertical distribution of the soil moisture in terraced field and dammed land has the similar characteristics. The vertical moisture variation of terraced field and dammed land could be divided into 4 layers： soil moisture drastic change layer, soil moisture activity layer, soil moisture low activity layer and soil moisture relatively stable layer. The soil moisture of dammed land was higher than that of terraced field, also the different crop types could causes soil moisture change and the change is extremely remarkable between different crop types.

关 键 词：碾庄沟流域 梯田与坝地 土壤水分 垂直变化 

分 类 号：S152.7[农业科学—土壤学]