干旱区生态环境知识资源中心(Arid): 黄河中游河龙区间河川基流时空变化及其对水土保持响应

Arid

	黄河中游河龙区间河川基流时空变化及其对水土保持响应
其他题名	Spatial and Temporal Variations of Baseflow and Its Responses to Soil and Water Conservation in Hekouzhen-Longmen Section in the Middle Reaches of the Yellow River
	韩鹏; 王艺璇; 李岱峰
来源期刊	应用基础与工程科学学报
ISSN	1005-0930
出版年	2020
卷号	28 期号:3 页码:505-521
中文摘要	利用Nash-Sutcliffe效率系数评估不同基流分割方法的计算结果精度,选用适合的基流分割方法对黄河中游河龙区间红河等13条主要一级支流长时间序列的逐年汛期基流深以及基流系数进行了计算,并结合区间内水土保持的情况、降水量的情况对基流变化进行了分析.结果表明,河龙区间内主要一级支流的汛期基流深在长时间尺度上,大多呈现出显著的下降趋势,区间北部的河流基流系数呈减少趋势,区间南部的河流基流系数呈增多趋势;进一步的分析表明,这两种不同趋势的基流变化规律与在不同降雨条件下开展的大规模水土保持活动存在着显著的相关关系:在500mm等降水量线以北的流域,大规模开展水土保持对汛期基流深有明显的削减作用,而在区间内500mm等降水量以南的流域,水土保持对汛期基流深的影响则不显著;在区间的半干旱地区水土保持面积占比与逐年基流系数变化呈现出显著性负相关,在半湿润地区则呈现出显著性正相关.
英文摘要	Baseflow is the most stable component of streamflow,and it is of great significance for the rational development and allocation of water resources in the river basin to study the spatial and temporal variations of the baseflow. The Hekouzhen-Longmen section in middle reaches of the Yellow River is a place lacking of water recourse,but most studies in this area focus on the changes of streamflow,other studies concerning about baseflow lack of breadth of space,which cannot reflect the changes of water resources well. In this study,Nash-Sutcliffe efficiency coefficients were used to evaluate the accuracy of different numerical simulation methods to calculate baseflow. Based on the fittest digital filter model, the baseflow and the baseflow index of the 13 major primary tributaries,such as Red River,of the Yellow River in the middle reaches were calculated,and which were analyzed combined with the situation of soil and water conservation. The results show: the baseflow in the flood season of the main tributaries mostly shows a significant downward trend on a long time scale, the baseflow index of the river in the northern part of the section shows a significant downward trend,but which shows an upward trend in the southern part. A large-scale soil and water conservation measures has been implemented in Hekouzhen-Longmen section and in the basins, the area of which in each basin shows a significant growth trend. Further analysis shows that there are significant correlations between the two different trends of the baseflow and the large-scale soil and water conservation activities under different rainfall conditions. The baseflow in flood season can be significantly reduced by the large-scale soil and water conservation activities in the north of 500mm rainfall isohyet,but the function of which is not significant in the south of it. The proportion of soil and water conservation area of the interval was negatively correlated with the annual base flow coefficient in the semi-arid area,and there was a significant positive correlation in the semihumid area. The impact of human activities and natural changes on the baseflow is the result of the combined effects of various factors,so more in-depth research is needed to find out the mechanism of changes in the baseflow.
中文关键词	河龙区间 ; 汛期 ; 水土保持 ; 基流分割 ; 基流系数 ; 黄河流域
英文关键词	Hekouzhen-Longmen Section flood season soil and water conservation calculate baseflow the baseflow index the Yellow River
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6744635
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353963
作者单位	韩鹏, 北京大学环境科学与工程学院;;教育部水沙科学重点实验室, ;;教育部水沙科学重点实验室, ;;, 北京;;北京 100871;;100871, 中国.; 王艺璇, 北京大学深圳研究生院;;教育部水沙科学重点实验室, ;;教育部水沙科学重点实验室, 深圳;;, ;;北京 518055;;100871.; 李岱峰, 北京大学深圳研究生院;;教育部水沙科学重点实验室, ;;教育部水沙科学重点实验室, 深圳;;, ;;北京 518055;;100871.
推荐引用方式 GB/T 7714	韩鹏,王艺璇,李岱峰. 黄河中游河龙区间河川基流时空变化及其对水土保持响应[J]. 北京大学,2020,28(3):505-521.
APA	韩鹏,王艺璇,&李岱峰.(2020).黄河中游河龙区间河川基流时空变化及其对水土保持响应.应用基础与工程科学学报,28(3),505-521.
MLA	韩鹏,et al."黄河中游河龙区间河川基流时空变化及其对水土保持响应".应用基础与工程科学学报 28.3(2020):505-521.