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坡面植被分布对降雨侵蚀的影响研究 预览 被引量:16

Study on the effect of vegetation patterns on the slope on the rainfall erosion
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摘要 在黄土高原约15°的自然荒草坡面上,对两个坡面小区进行野外模拟降雨实验,其中一个从坡顶向坡底逐渐破坏地表植被和结皮,另一个从坡底向坡顶逐渐破坏地表植被和结皮,分别对破坏过程中各种植被面积下的降雨产流产沙量进行比较,结果认为:在相同面积条件下,位于坡底的植被比位于坡顶的植被保水作用高2.4倍,保土作用高2.8倍;随着植被面积的减少,坡面产流量和产沙量呈不均匀的增加趋势,在不同的植被面积变化范围,坡面产流量和产沙量的增幅不同. Two artificial rainfall experiments are conducted on the two natural wild slopes. The vegetation and top soil crust are destroyed from the top to the bottom of the slope in one experiment and from the bottom to the top in the other experiment. The experimental results show that under the same vegetation area the water-conserving capacity of the vegetation near the bottom of the slope is 2.4 times higher than that near the top of the slope, and the soil-conserving capacity of the vegetation near the bottom of the slope is 2.8 times higher than that near the top of the slope. With the decrease of vegetation area, both runoff generation and sediment yield increase unevenly.
作者 游珍 李占斌 蒋庆丰 YOU Zhen, LI Zhan-bin ,JIANG Qing-feng(1. College of Geographical Science, Nantong University, Nantong, Jiangsu ,226007 ; 2. State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling , Shaanxi 712100, China; 3. Xi'an Urdversity of Technology, Xi'an , Shaanxi , 710000, China; 4. Nanjing Institute of Geography and Limnolog, y , Chinese Academy of Science, Nanjing , Jiangsu ,210008, China )
出处 《泥沙研究》 CSCD 北大核心 2005年第6期 40-43,共4页 Journal of Sediment Research
基金 中国科学院资助项目,黄河水利委员会重大治黄科技项目
关键词 模拟降雨 坡面植被格局 坡面降雨侵蚀产流产沙 草地植被 artificial rainfall vegetable pattern on slope runoff generation and soil erosion grass covered land
作者简介 游珍(1977-),女,博士,新疆阿克苏人,主要从事环境演变和土地资源方面的研究。E-mail:youzhen12@126.com
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