摘要
利用电子称重式蒸渗仪（Ｌｙｓｉｍｅｔｅｒ）测定田间蒸散量（ＥＴ），并用中子水分仪同步测定沙面下１０～１５０ｃｍ土壤水分含量，求得含水率Ｗ（％）。通过研究沙区不同植被区域内，土壤剖面不同深度土体含水率Ｗ与ＥＴ的关系，估算出了三种处理（油蒿栽植区、柠条栽植区、裸露沙区）的不同深度土壤水分对蒸散过程的贡献值。
In the fixed site experiment, the Lysimeter and the neutron probe were used to measure the field evapotranspiration( E T ) and the soil moisture( W ) respectively. With 3 Treatments-(1) Artemisia ordosica region,(Ⅱ) Caragana korshisinkii region, and (Ⅲ) bare sandy region, the relationships between E T and W of different layers in each treatment have been analysed. Meanwhile, the affecting value of soil moisture in every 10 cm layer from 0￣150 cm has been calculated, and the relative functions between E T and W of different fields have been simulated.
出处
《中国沙漠》
CSCD
北大核心
1996年第4期388-391,共4页
Journal of Desert Research
基金
国家"八五"攻关项目资助
关键词
陆面蒸散量
土壤水分
数值计算
Evapotranspiration Soil moisture Numerical calculation
