干旱区生态环境知识资源中心(Arid): 喀斯特坡地土壤流失监测结果简报

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	喀斯特坡地土壤流失监测结果简报
其他题名	Monitoring Results of Soil Loss in Karst Slopes
	彭韬 1; 杨涛 1; 王世杰1 ; 张信宝 2; 陈波 2; 汪进阳 2
ISSN	1672-9250
出版年	2009
卷号	37 期号:2 页码:126-130
中文摘要	在贵州普定岩溶地质与生态研究综合试验站陈旗小流域内,采用全坡面大型径流场的方法,对6种不同土地利用条件下喀斯特坡地径流场次降雨地表径流量和土壤流失进行了监测.2007年7月到2008年12月期间的监测结果表明:6个径流场土壤流失量均非常小,年土壤流失量和年悬沙产沙量变化范围分别为0.05～62.25 t/km~2和0.03～8.68 t/km~2,最大的为中度石漠化的稀疏灌丛径流场.喀斯特坡地土壤流失集中发生在降雨量超过60mm的降雨事件中,不同类型坡地间次降雨土壤流失量差异显著,最主要控制因素为地表径流量,同时也受到降雨特征和植被状况的影响.此外,前期降雨对坡地产流和土壤流失的影响也是客观存在的.前期降雨丰沛的条件下,坡耕地、稀疏灌丛径流场的地表径流量、次降雨土壤流失量相对复合植被、火烧迹地、灌草和幼林径流场均出现明显增长.
英文摘要	Experiments on monitoring surface runoff, suspensional sediment yield and soil loss for each rainfall event was carried out in six runoff fields with different land use types, using large slope runoff field method, in Chenqi catchment, from July,2007 to Dec,2008. Results show that annual soil loss and suspensional sediment yield in six runoff fields vary greatly, from 0. 05 to 62.25 t/km~2 and 0.03～8.68 t/km~2, the largest one occurs in the sparse shrubs runoff field which classified as moder ate rocky desertification, Soil loss in karst slopes generally occurs in heavy rainstorms when the precipitation exceeds 60mm, and the surface runoff is the dominating factor; however, the soil loss also being affected by rainfall characteristic and vegetation cover. Moreover, antecedent precipitation influence the surface runoff and soil loss significantly in karst slopes; Surface runoff, soil loss and suspensional sediment yield for each rainfall event in agriculture and sparse shrubs runoff fields, show significant increases in such case, comparing with runoff fields with complex vegetation, burned area, shrub-grass and young forest.
中文关键词	喀斯特坡地 ; 土地利用类型 ; 全坡面大型径流场 ; 土壤流失 ; 悬移质泥沙 ; 监测
英文关键词	karat slope different types of land use large sloping runoff field soil loss suspensional sediment monitoring
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:3547481
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223417
作者单位	1.中国科学院地球化学研究所, 贵阳, 贵州 550002, 中国; 2.中国科学院地球化学研究所贵州省科技厅普定岩溶地质与生态研究综合试验站, 普定, 贵州 562100, 中国
推荐引用方式 GB/T 7714	彭韬,杨涛,王世杰,等. 喀斯特坡地土壤流失监测结果简报[J],2009,37(2):126-130.
APA	彭韬,杨涛,王世杰,张信宝,陈波,&汪进阳.(2009).喀斯特坡地土壤流失监测结果简报.,37(2),126-130.
MLA	彭韬,et al."喀斯特坡地土壤流失监测结果简报".37.2(2009):126-130.