摘要
通过对禹城沙河地沙土土壤水分动态监测，分析其土壤水分剖面变化，得出本沙地土壤水分动态变化规律：依据降水、植被、地下水和土壤将土壤水分垂直剖面划分为表层０－１０ｍ或０－２０ｃｍ干沙层，２０－４０ｃｍ土壤水分变化剧烈层，４０－８０ｃｍ土壤水分活跃层，８０－１２０ｃｍ以下土壤水分深部稳定层；沙地土壤水分随季节变化划分为，春季水分变化较微──弱失水阶段，夏季水分剧烈变化──降水补给阶段，秋季水分变化缓慢─—失水阶段，冬季水分变化较微弱──调整阶段。
Through three years of obervation to sandy soil moisture varhtion in Shahe, Yucheng, and analysing soil moisture profole , it has reached the conclusion: from the top to the bottom thereexist four distinctive layers of soil moisture , namely surface dry sand layer,0-10 cm or 0-20 cm; extremely active soil moisture layer , 20-40 cm; active soil moisture layer, 40-80 cm; and stablesoil moisture layer,80-120 cm. Based on the seasonal variation of sandy soil moisture, it can bedivided into four phrases: the soil moisture varies weakly in spring and autumn is highly, variablephrase, summer is active increase phrase, winter is stable and regulational phrase.
出处
《中国沙漠》
CSCD
北大核心
1995年第2期151-157,共7页
Journal of Desert Research
