【摘要】：水分是干旱、半干旱區(qū)生態(tài)系統(tǒng)中最重要的限制因子,一直以來都是研究的熱點問題。然而由于測定方法的缺失,流動沙丘深層水分滲漏量的動態(tài)變化特征缺少令人信服的直接證據(jù)。采用YWB-01型水分深層滲漏記錄儀,研究了毛烏素沙地流動沙丘降雨入滲過程及150cm深度處的深層滲漏特征。結(jié)果表明:2011年5月14日到2014年7月14日,深層滲漏量≤1mm的天數(shù)為793天,占總觀測到滲漏時長的81.5%,深層滲漏量占總滲漏量的21.3%;深層滲漏量≥10mm的天數(shù)為18天,占總觀測到滲漏時長的1.85%,深層滲漏量占總滲漏量的33.3%。集中補給期主要在6—9月,滲漏量分別占各年總滲漏量的70%以上。深層滲漏量和降雨量之間均呈顯著正相關(guān)關(guān)系。
[Abstract]:Water is the most important limiting factor in arid and semiarid ecosystem. However, due to the lack of measurement methods, there is no convincing direct evidence for the dynamic characteristics of water leakage in the deep layer of flowing sand dunes. The process of rainfall infiltration in flowing sand dunes in Maowusu sandy land and the characteristics of deep seepage at the depth of 150cm were studied by using YWB-01 deep water leakage recorder. The results show that from May 14, 2011 to July 14, 2014, the number of days of deep leakage 鈮，

本文編號：2127715