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Position: Home > Articles > Characteristics of Different Aspect of Soil Erosion in Wind-Water Erosion Crisscross Region on Loess Plateau Journal of Soil and Water Conservation 2004,18 (1) 63-65+99

黄土高原水蚀风蚀交错带土壤侵蚀坡向分异特征

作者：

李勉;李占斌;刘普灵;崔灵周;李雅琦

单位：

水利部黄委会黄河水利科学研究院;中国科学院水利部水土保持研究所;西安理工大学

关键词：

水蚀风蚀交错带;坡向;坡位;137Cs

摘要：

定量分析评价水蚀风蚀交错带土壤侵蚀的坡向差异对于土壤侵蚀防治具有重要意义。通过对黄土高原水蚀风蚀交错带六道沟流域一个典型峁坡不同坡向及坡位土壤剖面中137Cs含量的分析研究,表明研究区内梁峁地形的坡向侵蚀差异明显,各坡向平均侵蚀速率大小依次是北坡>东坡>南坡>西坡,南北坡侵蚀差异与黄土丘陵区其它区域相反,分析认为,这与该区域水蚀、风蚀叠加的特殊侵蚀外营力有关,并根据南北坡侵蚀速率的差值估算出该区域风蚀所占比例至少大于18%;峁坡各坡向不同坡位侵蚀差异明显,坡面下部侵蚀最严重,坡面上部和中部次之,侵蚀速率顺坡沿程呈波动变化趋势,坡面水土保持措施减沙效果显著。

译名：

Characteristics of Different Aspect of Soil Erosion in Wind-Water Erosion Crisscross Region on Loess Plateau

作者：

LI Mian~(1,2), LI Zhan-bin~(2,3), LIU Pu-ling~3, CUI Ling-zhou~2, LI Ya-qi~3 (1.Institute of Hydraulic Research of Yellow River, Yellow River Conservancy Commission and Ministry of Water Resources, Zhengzhou, Henan 450003; 2.Xi'an Technology University, Xi'an,Shaanxi 710048; 3.Institute of Soil and Water Conservation,Chinese Academy of Science and Ministry of Water Resource,Yangling,Shaanxi 712100)

关键词：

wind-water erosion crisscross region; slope aspect;slope position;()~(137)Cs

摘要：

It's very important to analyze and evaluate quantitatively the characteristics of different aspect of soil erosion in wind-water erosion crisscross region for the prevention and treatment of soil erosion in this area. The( ()~(137) Cs) content in soil profiles of different aspects in a typical Mao in Liudaogou catchment in wind-water erosion crisscross region were analyzed, showing that the difference of soil erosion in different aspect is significant and the soil erosion rate is in this order: north slope>east slope>south slope>west slope. Compared with other areas, the difference of erosion rate between north slope and south slope is on the contrary because of the special erosion force——wind-water erosion crisscross. Also, the percentage of wind erosion was estimated to be at least larger than 18%. The erosion rates in different slope position in all aspects were also different, the heaviest erosion occurred in the lower position, and the upper position and the middle position were slighter than the lower position. Generally, the changeable tendency of annual erosion rate in sloping surface is in fluctuation with the increasing slope length downslope. Also, the measures of soil and water conservation in sloping surface played important role in reducing soil erosion.

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