摘要
半湿润沙地水分动态具有水平和垂直方向上的规律性，沙地水分变化受制于沙地沙质的矿物质，沙地沙土的机械组成和气象要素、植被条件、地下水等；沙地剖面变化和地表径流网、人工灌溉也对半湿润沙地水分有一定影响。本区自然状况下沙地一般不产生径流，但干沙层对沙地的水分变化和水分状况有重要作用。
The study results showed that moisture dynamic conditions in sandyland have the vetical and horizontal laws in the semi humid region along the YellowRiver valley. Moisture changes in sandy land are constrained by its mineral componentsand mechanical composition of sandy soil and meterological factors,cover andground water.Apart from the changes in sandy land profile and runoff system,artificialirrigation can also have a certain effect upon soil moisture in sandy land.In the case ofnatural conditions in this region,sandy land will produce no runoff in general,but drysand layer has an imporant role in moisture change and moisture conditions in sandyland.
出处
《干旱地区农业研究》
CSCD
北大核心
1995年第1期25-30,共6页
Agricultural Research in the Arid Areas
基金
北京地理研究所禹城开放站基金
关键词
半湿润沙地
水分动态规律
土壤含水量
soil moisture dynamics,semihumid sandy land
moisture dvnamiclaw
miosture condition
