干旱区生态环境知识资源中心(Arid): 渭河流域侵蚀产沙强度的区域分异特征

Arid

	渭河流域侵蚀产沙强度的区域分异特征
其他题名	Regional Variation Features of Sediment Yield Intensity in the Wei River Basin
	焦菊英; 马详华; 王飞; 焦峰; 王万忠
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2004
卷号	11 期号:4 页码:60-63
中文摘要	根据渭河流域水文站的泥沙观测资料,采用"水文-地貌法",将渭河流域划分为132个侵蚀产沙单元,计算分析了渭河流域侵蚀产沙强度的区域分异特征.渭河流域的多年平均侵蚀产沙强度为4 459.2 t/(km2a), 产沙量为5.2亿t/a;≥5 000 t/(km2a)的强度侵蚀面积平均为5.2亿km2,占全流域总面积的44.3%;主要侵蚀产沙区位于渭河南河川及天水以上的黄土丘陵沟壑区、泾河庆阳以上的大部分地区和杨家坪以上的部分地区、以及北洛河刘家河以上的干旱黄土丘陵沟壑区,侵蚀产沙强度在6 000～10 000 t/(km2*a)之间,其面积占流域的39.1%.由于渭河流域上中游水土流失严重,导致下游河床泥沙淤积日趋严重,洪水灾害的潜在危险性很大,直接威胁着渭河下游以至黄河下游的安澜.因此,渭河流域的水土保持工作非常重要,特别是中上游地区的主要侵蚀产沙区和产沙中心.应加强渭河流域水土保持措施的区域适宜性与匹配关系的研究,开展水土流失动态实时监测,为科学配置治理措施,加快水土流失治理步伐提供理论依据。
英文摘要	Based on the distribution of the hydrological station and the different soil erosion type area,132 soil erosion units was divided in the Wei River basin. According to the observation data of sediment,the spatial variation features of sediment yield intensity in the Wei River basin were analyzed. The annual average sediment yield intensity was 4 459. 2 t/(km2 ? a) , sediment yield was 5. 2X10Bt/a,the violence erosive area with erosion modulus ^5 000 t/(km a) was 5. 2X104 km2,the area of it made up 44. Z% of the total area of the Wei River basin. The main sediment area were distributed in the loess hilly and gully region above Nanhechuan and Tianshui in Wei.River,the area above Qingyang and Yangjiaping in the Jing River,and arid loess hilly and gully region above Liujiahe in the Beiluo River,the sediment yield intensity were 6 000~10 000 t/(km a) ,and the area of the main sediment area made up 39. 1% of the total area of the Wei River basin. Because of the severe soil loss in the upper reaches in the Wei River basin,the silt in river bed in the lower reaches was serious gradually,and lead to potential risk of flood hazards,threaten to the safe of the lower reaches of the Wei River and the Huanghe River. So the soil and water conservation in the Wei River is very important,especially in the main sediment area in the upper reaches. The study of regional fitness of soil and water conservation measures and their collocation should be stressed,the dynamic and real-time observation of soil and water loss should be implemented.
中文关键词	渭河流域 ; 土壤侵蚀 ; 水土保持 ; 区域分异
英文关键词	Wei River Basin soil erosions soil and water conservation regional variation
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:1810137
来源机构	中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205523
作者单位	中国科学院水利部水土保持研究所, 杨陵, 陕西 712100, 中国
推荐引用方式 GB/T 7714	焦菊英,马详华,王飞,等. 渭河流域侵蚀产沙强度的区域分异特征[J]. 中国科学院水利部水土保持研究所,2004,11(4):60-63.
APA	焦菊英,马详华,王飞,焦峰,&王万忠.(2004).渭河流域侵蚀产沙强度的区域分异特征.水土保持研究,11(4),60-63.
MLA	焦菊英,et al."渭河流域侵蚀产沙强度的区域分异特征".水土保持研究 11.4(2004):60-63.