文献类型：期刊文献

中文题名：毛乌素沙地几种灌木生长季土壤水分动态特征

英文题名：Variation of Soil Moisture of Several Shrubs in Mu Us Sandland During Growing Season

作者：张友焱[1] 周泽福[1] 程金花[2] 党宏忠[1] 李卫[1]

第一作者：张友焱

机构：[1]中国林业科学研究院荒漠化研究所;[2]北京林业大学水土保持学院

年份：2010

卷号：17

期号：2

起止页码：160-163

中文期刊名：水土保持研究

外文期刊名：Research of Soil and Water Conservation

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家科技支撑课题(2006BAD26B06);国家农业节水专项(2002AA2Z4271)

语种：中文

中文关键词：土壤水分;Brown^Forsythe检验;毛乌素沙地

外文关键词：soil moisture; Brown-- Forsythe test; Mu Us sandland

分类号：S152.7

摘要：土壤水分是影响沙漠植物生长的主要因素之一,该文以毛乌素沙地3种灌木为研究对象,分析了其生长季土壤水分变化特点,并采用Brown-Forsythe检验方法比较几种灌木覆盖下土壤表层(0-20cm)水分含量与裸沙地的差异。结果表明:土壤水分的变化受到根系深度和降雨特征的影响较大。不同灌木地下30-50cm处土壤水分含量波动明显,是由于根系吸水导致。2004年灌木地土壤含水量在8月最大,而2005年为7月底最大,是由于降雨特征不同导致。油蒿与裸沙地土壤表层含水量差异显著(Sig=0.04<0.05),而沙地柏、杨柴与裸沙地土壤表层含水量差异不显著(Sig值分别为0.239和0.308,均大于0.05),即油蒿对保持沙地土壤表层水分含量效果显著。
Soil moisture is one of the main factors affecting the growth of plants in sandland. Taking 3 shrubs in Mu Us sandland as study objectives, this paper analyzed the variation of their soil moisture, and tested the difference of soil moisture in top layer between shrubs and bared sandland by Brown--Forsythe method. The results show that the variation of soil moisture is affected largely by root depth and rainfall characteristics. The soil moisture in the depth of 30--50 cm varied obviously because of the water uptake of roots. Soil moisture is the highest in August in 2004, and July in 2005. Artemisia ordosica has signifi- cant effect on top soil moisture （Sig = 0.04 〈 0.05）, and Sabina vulgaris and Hedysarurn rnongolicurn have no siginificant difference with bared sandland （Sig value is 0. 239 and 0. 308 respectively）, which means that Arternisia ordosica can keep the moisture of topsoil.