干旱区生态环境知识资源中心(Arid): 基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征

Arid

	基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征
其他题名	Characteristics of soil erosion on Karst slopes under artificial rainfall experiment conditions
	甘艺贤; 戴全厚; 伏文兵; 严友进; 彭旭东
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2016
卷号	27 期号:9 页码:2754-2760
中文摘要	探索喀斯特坡耕地土壤侵蚀过程及机理对该区水土流失及石漠化治理具有重要的现实和指导意义.本文采用人工模拟降雨的试验方法,探索喀斯特坡耕地土壤侵蚀过程及特征.结果表明:降雨强度较小时(30、50 mm·h~(-1)),水土流失以地下孔(裂)隙流失为主,当降雨强度较大时(80 mm·h~(-1)),土壤侵蚀以地表流失为主;地表径流模数和输沙率均随坡度的增加而增大,随孔(裂)隙度的增加而减小.地下径流模数在0.37~0.52 L·m~(-2)·min~(-1),地下输沙率在0.81~1.93 g·min~(-1),二者均随坡度的增加而减小,随降雨强度的增加呈先增大后减小的变化趋势.
英文摘要	Studying soil erosion process and mechanism on Karst slopes has important practical and guiding significance for controlling soil and water loss and preventing rocky desertification in Karst region. The soil erosion process and characteristics on Karst slopes were explored by artificial simulation rainfall experiment. Results showed that the soil and water loss largely came from underground hole (crack) when rainfall intensity was in the range of 30 and 50 mm·h~(-1),while soil erosion occurred primarily in soil surface when rainfall intensity was 80 mm·h~(-1). Surface runoff modulus and transport rate both increased with increasing slope,and decreased with increasing underground hole (crack) degree. The underground runoff modulus varied from 0.37 to 0.52,and the underground transport rate changed from 0.81 to 1.93 g·min~(-1). They both decreased with increasing slope while increased firstly and then decreased with increasing rainfall intensity.
中文关键词	人工降雨 ; 地表产流产沙 ; 地下产流产沙 ; 喀斯特坡耕地
英文关键词	artificial rainfall surface runoff and sediment yield underground runoff and sediment yield Karst slope cropland
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5803781
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235250
作者单位	贵州大学林学院, 贵阳, 贵州 550025, 中国
推荐引用方式 GB/T 7714	甘艺贤,戴全厚,伏文兵,等. 基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征[J],2016,27(9):2754-2760.
APA	甘艺贤,戴全厚,伏文兵,严友进,&彭旭东.(2016).基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征.应用生态学报,27(9),2754-2760.
MLA	甘艺贤,et al."基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征".应用生态学报 27.9(2016):2754-2760.