地表干扰生态修复措施对黄土丘陵区长芒草典型草原土壤水分特征的影响
首发时间:2012-11-30
摘要:研究了封育、鱼鳞坑和水平沟生态修复措施下宁夏黄土丘陵区长芒草(Stipa bungeana)典型草原土壤水分特征。结果表明土壤含水率表现为水平沟最高,鱼鳞坑居中,封育草地最低,这在降雨较多的时期更为明显。0-40cm土壤含水率变异大小为封育草地>鱼鳞坑>水平沟。土壤水分季节上垂直变化不尽相同,0-40cm土壤水分与40-100cm的差异表现为封育草地最大,水平沟最小。封育草地土壤水分为下坡>中坡>上坡,鱼鳞坑和水平沟整体为中坡>上坡>下坡,且上坡与下坡无明显差异。
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Influence on soil moisture characteristics of Stipa bungeana type steppe under land surface layer disturbed ecological restoration measures in hilly area of the Loess Plateau
Abstract:The soil moisture characteristics of Stipa bungeana type steppe under ecological restoration measures including being ungrazed, fish-scale pits and parallel ditches in hilly area of the Loess Plateau in Ningxia were studied. The results showed that soil moisture content of level-ditch was highest,fish-scale pit was middle,ungrazing grassland was lowest,this difference was more obviously during rainfall frequently. Variability order of soil moisture content in 0~40cm was ungrazing grassland> fish-scale pit>level-ditch. Vertical changes of soil moisture were inequality on season. The difference of soil moisture content between 0~40cm and 40~100cm was expressed that ungrazing grassland was biggest and level-ditch was least. The order of soil moisture content of ungrazing grassland was down-slope>mid-slope>upside-slope. Fish-scale pit and level-ditch were mid-slope>upside-slope>down-slope in whole,and there were no significance difference between upside-slope and down-slope.
Keywords: Loess hilly area Ecological restoration Type steppe Soil moisture characteristics
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地表干扰生态修复措施对黄土丘陵区长芒草典型草原土壤水分特征的影响
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