干旱区生态环境知识资源中心(Arid): 岩溶区坡面土壤侵蚀特征研究

Arid

	岩溶区坡面土壤侵蚀特征研究
其他题名	Study on Characteristics of Soil Erosion on Karst Hillslope
	傅瓦利; 张治伟; 张洪; 夏凯生; 谢德体; 倪九派
ISSN	1009-2242
出版年	2007
卷号	21 期号:5 页码:38-41
中文摘要	以重庆南川岩溶区为例,用~(137)Cs法研究了岩溶区坡面土壤侵蚀特征.结果表明,坡面上部侵蚀速率较小,平均侵蚀速率为400.8 t/(km~2·a),最大侵蚀速率为1 138.4 t/(km~2·a);坡面中部侵蚀加剧,平均侵蚀速率2 264.8 t/(km~2·a),最大侵蚀速率可达3 760 t/(km~2·a);坡面下部侵蚀减弱甚至堆积.土壤表层有机质、表层粘粒及水稳性团聚体含量在坡面上的变化与土壤侵蚀速率具有负相关趋势.
英文摘要	By using the Cesium-137 technique,three karst slopes in Nanchuan county,Chongqing were chosen for studying the characteristics of soil erosion on karst hillslope.The research shows that the gradient and position of the sampling site in a karst hillslope are the main factors which affect the status of soil erosion or sedimentation.Soil erosion rates are small on the upper sectors of the slopes,the mean value is 400.8 t/(km~2·a).At the middle sectors,soil erosion rates are bigger than that of the upper and lower sections,the mean value is 2 264.8 t/(km~2·a).Mean value of soil erosion rates of two sampling sites at the lower sectors is 640.8 t/(km~2·a),the other two are sedimentary sites,it shows that development of rock desertification in the upper and middle sectors and enrichment of soil at the lower reaches on a karst slope are two synchronous processes.Shown by the research on the soil organic matter,clay and water-stable aggregates(>0.25 mm) on soil surface,there is a tendency of decrease with the increase of soil erosion rates.
中文关键词	岩溶坡地 ; 土壤侵蚀与堆积 ; 137Cs法
英文关键词	karst hillslope soil erosion and sedimentation Cesium-137 technique
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:2935848
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221461
作者单位	西南大学,地理科学学院, 重庆 400715, 中国
推荐引用方式 GB/T 7714	傅瓦利,张治伟,张洪,等. 岩溶区坡面土壤侵蚀特征研究[J],2007,21(5):38-41.
APA	傅瓦利,张治伟,张洪,夏凯生,谢德体,&倪九派.(2007).岩溶区坡面土壤侵蚀特征研究.,21(5),38-41.
MLA	傅瓦利,et al."岩溶区坡面土壤侵蚀特征研究".21.5(2007):38-41.