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当前位置: 首页 > 文章 > 神木水蚀风蚀交错带退耕坡地土壤水分空间变异性研究 水土保持学报 2005,19 (1) 132-135
Position: Home > Articles > Study on Soil Moisture Spatial Variability of Degraded Slope in Shenmu Wind-Water Erosion Crisscross Region Journal of Soil and Water Conservation 2005,19 (1) 132-135

神木水蚀风蚀交错带退耕坡地土壤水分空间变异性研究

作  者：
刘春利;邵明安;张兴昌;李世清
单  位：
中国科学院亚热带农业生态研究所;中国科学院地理科学与资源研究所;中国科学院水土保持与生态环境研究中心黄土高原土壤侵蚀与旱地农业国家重点实验室
关键词：
水蚀风蚀交错带;退耕坡地;土壤水分;空间变异性
摘  要：
运用统计学方法,对黄土高原神木水蚀风蚀交错带退耕坡地土壤水分空间变异性及其影响因子进行研究。结果表明:(1)土壤水分含量在垂直剖面方向表现出随深度增加,土壤水分含量呈增加趋势,在100cm土层内变异最大,在100cm以下其变化的梯度基本趋于稳定;(2)土壤水分含量沿坡长方向(即坡顶到坡下)呈波浪状递增趋势,且在各坡位变异程度不一,呈现出变异程度为坡上>坡中>坡下的趋势;(3)土壤水分含量沿垂直于坡长方向表现为:阴坡>山脊>阳坡的明显趋势,其变异程度表现为阳坡>阴坡的趋势。本文对神木水蚀风蚀交错带退耕坡地土壤水分的研究有助于了解退耕地土壤水分的变异特征,为区域环境治理和植被建设提供科学依据。
译  名：
Study on Soil Moisture Spatial Variability of Degraded Slope in Shenmu Wind-Water Erosion Crisscross Region
作  者：
LIU Chun-li~1, SHAO Ming-an~(2,3), ZHANG Xing-chang~(3,4), LI Shi-qing~(3,4) (1.Institute of Subtropical Agriculture Ecology, Changsha 410125; 2.Institute of Geographical Sciences and Natural Resources Research, Beijing 100101; 3.Instiryland Farming on Loess Plateau, Chinese Academy of Sciences, Yangling, Shaanxi 712100;4.Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi 712100)
关键词：
wind-water erosion crisscross region;degraded slope-land;soil moisture;spatial variability
摘  要：
The spatial variability of soil moisture on a degraded slope in Shenmu wind-water erosion crisscross region on the Loess Plateau was studied by using classical statistics. Factors that cause the soil water spatial variability were discussed. The results are as follows:(1)soil moisture contents in a soil profile increased with the depth, the extent of the variability is the largest between the depth from 35 to 100cm below soil surface, and the gradients of soil moisture contents below 100cm from the surface tend to be constant; (2)the soil moisture contents fluctuate along the slope from the top to its bottom,the degrees of the variability of each section of the slope are different, they follow the order of the top >the middle>the bottom (of the slope); and (3) in the horizontal direction, the magnitudes of soil moisture contents change in the order of the shaded slope>the ridge>the sunshine slope, the extent of soil moisture variability in the shaded slope is greater than that in the sunshine slope. The results of this study help to understand the soil waterdistribution on degraded slope-lands, they can be used to offer recommendations to local government and farmers for the reconstruction of vegetation and the regional environment improvement.

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