干旱区生态环境知识资源中心(Arid): 坡度和雨强对重庆市黄壤旱坡地产流产沙特征的影响

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	坡度和雨强对重庆市黄壤旱坡地产流产沙特征的影响
其他题名	Effects of Slopes and Rainfall Intensities on Runoff and Sediment Characteristic of Arid Hillside Land with Yellow Soil in Chongqing
	代数 1; 蒋光毅 2; 夏清 3; 陈正发 1; 史东梅 1; 罗歆 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2011
卷号	25 期号:4 页码:1-5,11
中文摘要	黄壤作为重庆市山地主要的土壤类型之一,对重庆市农业生产有重要影响。通过人工模拟降雨试验,研究不同坡度和降雨强度条件对黄壤旱坡地产流产沙特征影响及响应过程,结果表明:(1)输沙率随降雨强度的增大而增大,对于短历时强降雨来说,输沙率保持在一个相对平均的水平,比长历时中强度降雨的输沙率大。在坡度0°~25°以内,黄壤旱坡地产流量与坡度之间的关系可以用多相式进行拟合,得到产流临界坡度为22.83°;(2)土壤侵蚀量与坡度符合二次抛物线关系,随坡度的增加出现临界坡度,重庆市黄壤旱坡地土壤侵蚀的临界值坡度为24.7°。在降雨特征参数中,平均降雨强度是反映黄壤旱坡地泥沙量、径流系数和径流泥沙含量的最好特征参数,时段最大降雨强度I10最能反映黄壤旱坡地径流量的变化特征; (3)在10°,15°,20°3个不同坡度下,径流量和产沙量与雨强均表现为幂函数关系,相关系数均在大于0.05置信区间呈显著相关性。
英文摘要	Yellow soil is one of the main types of soil in Chongqing,and it has great influence on agricultural.By artificial rainfall simulation experiments,the paper was mainly studied on characteristics of runoff,sediment yield and its response of process of different slope and different rainfall intensity conditions on the arid hillside land with yellow soil.The results showed that:(1)Sediment transport rate increased with rainfall intensity increases,it was at a level of relative to the average to the heavy rainfall for short duration,but it must be better than that in the intensity of rainfall for long time.Under the slope of 0°to 25°,the relationship between runoff and slope in the arid hillside land with yellow soil could be fitted with a multiphase,and the threshold was 22.83°; (2)The relationship,between soil erosion and slope,meet the following parabola,and the threshold was 24.7°.The one about average intensity of rainfall was the best in all rainfall characteristic parameters,it could show sediment content,runoff coefficient and runoff sediment concentration; (3)Under the different slope,the relationship between runoff amount,sediment and rain intensity was expressed as power function.The correlation coefficient would be significant correlation if the confidence interval was bigger than 0.05.
中文关键词	径流量 ; 产沙量 ; 临界坡度 ; 旱坡地 ; 黄壤
英文关键词	runoff sediment production critical slope sloping dryland yellow soil
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:4309884
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227083
作者单位	1.西南大学资源环境学院, 重庆 400715, 中国; 2.重庆市水土保持生态环境监测总站, 重庆 401147, 中国; 3.万盛区水利局, 重庆 400800, 中国
推荐引用方式 GB/T 7714	代数,蒋光毅,夏清,等. 坡度和雨强对重庆市黄壤旱坡地产流产沙特征的影响[J],2011,25(4):1-5,11.
APA	代数,蒋光毅,夏清,陈正发,史东梅,&罗歆.(2011).坡度和雨强对重庆市黄壤旱坡地产流产沙特征的影响.水土保持学报,25(4),1-5,11.
MLA	代数,et al."坡度和雨强对重庆市黄壤旱坡地产流产沙特征的影响".水土保持学报 25.4(2011):1-5,11.