干旱区生态环境知识资源中心(Arid): 我国水蚀区坡耕地土壤分离能力的空间分布与影响因素

Arid

	我国水蚀区坡耕地土壤分离能力的空间分布与影响因素
其他题名	Spatial Distribution and Influencing Factors of Soil Detachment Capacity of Sloping Farmland in Water Erosion Zone of China
	耿韧; 张光辉; 洪大林; 马芊红; 金秋; 时元智
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2020
卷号	34 期号:3 页码:156-161
中文摘要	我国水蚀区不同区域自然地理环境和土壤理化性质存在巨大差异,可能会引起土壤分离能力(D_c)的差异。然而目前大尺度上(如水蚀区)D_c的空间分布及其影响因素的研究尚未见报道。在水蚀区依据土壤类型和土壤质地不同布设了36个采样点,用扰动土(代表新耕坡耕地)测定其D_c并分析其影响因素。结果表明,水蚀区沙漠风沙土D_c最大,红壤D_c最小,D_c呈强度空间变异。西北黄土高原地区和南方山地丘陵区D_c最大。黏粒和砂粒含量适中的土壤质地D_c最大。水流剪切力与水流功率在模拟D_c方面无显著差异。D_c与粉粒、土壤粒径参数、阳离子交换量和土壤有机质存在显著的负相关关系,与砂粒、中值粒径、平均几何粒径和交换性纳百分比存在显著的正相关关系。水蚀区D_c可用水流剪切力、粉粒、阳离子交换量和土壤有机质很好地模拟(R~2=0.71,NSE=0.71)。
英文摘要	There are enormous differences in natural geographical environment and soil physciochemical properties in different regions of the water erosion zone in China,which may cause differences in soil detachment capacity(D_c).However,little research has paid attention to the spatial distribution of D_c and its influencing factors at large scale(such as the water erosion region).In this study,36sampling sites were selected in the water erosion zone according to the soil types and soil texture.D_c was measured by disturbing soils(representing freshly tilled sloping farmland)and the influencing factors were analyzed.The results showed that D_c of Aqui-Sandic Primosols was the largest,while that of Argi-Udic Ferrosols was the smallest,and D_cexhibited a strong spatial variation in the water erosion zone.The northwest Loess Plateau and the South Hilly Area had the largest D_c.The soil texture with moderate content of clay and sand had the largest D_c.There was no significant difference between shear stress and stream power in simulating D_c.D_c had a significant negative correlation with silt content,particle size parameter,cation exchange capacity and soil organic matter,and a significant positive correlation with sand content,median soil grain size,geometric mean particle diameter,and exchangeable sodium percentage.D_cin water erosion area could be well simulated by shear stress,silt content,cation exchange capacity and soil organic matter(R~2=0.71,NSE=0.71).
中文关键词	水蚀区 ; 土壤分离能力 ; 空间分布 ; 土壤理化性质 ; 水动力学参数
英文关键词	water erosion zone soil detachment capacity spatial distribution soil physciochemical properties water hydraulic parameters
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6785516
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336803
作者单位	耿韧, 南京水利科学研究院;;北京师范大学地理科学学部, 水文水资源与水利工程科学国家重点实验室;;, 南京;;, ;;北京 210029;;100875.; 张光辉, 北京师范大学地理科学学部, 北京 100875, 中国.; 马芊红, 北京师范大学地理科学学部, 北京 100875, 中国.; 洪大林, 南京水利科学研究院, 水文水资源与水利工程科学国家重点实验室, 南京, 江苏 210029, 中国.; 金秋, 南京水利科学研究院, 水文水资源与水利工程科学国家重点实验室, 南京, 江苏 210029, 中国.; 时元智, 南京水利科学研究院, 水文水资源与水利工程科学国家重点实验室, 南京, 江苏 210029, 中国.
推荐引用方式 GB/T 7714	耿韧,张光辉,洪大林,等. 我国水蚀区坡耕地土壤分离能力的空间分布与影响因素[J]. 北京师范大学,2020,34(3):156-161.
APA	耿韧,张光辉,洪大林,马芊红,金秋,&时元智.(2020).我国水蚀区坡耕地土壤分离能力的空间分布与影响因素.水土保持学报,34(3),156-161.
MLA	耿韧,et al."我国水蚀区坡耕地土壤分离能力的空间分布与影响因素".水土保持学报 34.3(2020):156-161.