干旱区生态环境知识资源中心(Arid): 青海共和盆地多石在沟河道沙丘现代风水交互过程

Arid

	青海共和盆地多石在沟河道沙丘现代风水交互过程
其他题名	CONTEMPORARY PROCESS OF AEOLIAN-FLUVIAL INTERACTION ON SAND DUNES IN THE CHANNEL OF DUOSHIZAIGOU VALLEY,GONGHE BASIN,QINGHAI PROVINCE
	马玉凤; 严平; 宋阳; 杜建会; 朱孟郡; 丁连刚
ISSN	1001-7410
出版年	2008
卷号	28 期号:4 页码:695-701
中文摘要	选择青海共和盆地多石在沟河道中6道新月形沙丘链作为研究对象,采用Trimble 4700 DGPS与常规测量手段,结合野外风沙观测与自动气象站数据,初步观测分析了2006年多石在沟河道沙丘在不同季节的形态变化过程,计算出2006年风季前比雨季后多石在沟河道沙丘体积减小了548.3m~3,风积量为2351m~3,流水的蚀平量为2899m~3,2006年风水两相营力对河道沙丘的侵蚀贡献率约为45%:55%,流水的搬运作用强于风力的堆积作用.但从较长的时间尺度来看,研究区的风力侵蚀作用强于流水侵蚀作用,河道沙丘不断增大.多石在沟河道沙丘是一个典型的风水交互作用系统,河道成为风力与流水交互作用的"中转站",在风水的交替作用下,沉积物由风积环境进入流水环境中.
英文摘要	Aeolian-fluvial interaction is an important surface process to form geomorphologic landscape in arid and semiarid regions.Sometimes the hazardous degree of the interaction could be larger than that of each of the two individual erosion process.Aeolian-fluvial interaction on sand dunes in the river channel is an important process,on which quantitative observation data and dynamic analysis results at the micro-scale are lacking.With the aim of investigating aeolian-fluvial interaction on sand dunes in different seasons,six sand barchan dunes in the channel of Duoshizaigou valley,Gonghe Basin,Qinghai Province,are monitored by Trimble 4700 DGPS and ordinary manual surveying.Based on data of blownsand flow observation in field and meteorological data of windy season collected by Davis automatic weather station,we primarily investigated the morphologic change process of the sand dunes in the channel in different seasons of 2006.The results show that volume of the sand dunes in the channel of Duoshizaigou valley before windy season was 38051.4m~3,and 37503.1m~3 after rainy season in 2006;volume of aeolian sand blew into the channel is estimated 2351m~3 in the windy season and the fluvial erosion volume in the rainy season is 2899m~3.So the ratio of erosion rate of aeolian to fluvial is 45% ∶55% and the magnitude of transportation by water is higher than that of aeolian sediments by wind in the study area in 2006.But the wind erosion is higher than water erosion at longer time scale and the sand dunes constantly enlarge and extend.The sand dunes in the channel of Duoshizaigou valley are typical system of aeolian-fluvial interaction and they can be regarded as a transfer station where sediments are transported from aeolian environment to fluvial environment.
中文关键词	多石在沟 ; 河道沙丘 ; 风水交互作用 ; 现代过程
英文关键词	Duoshizaigou valley sand dunes in channel aeolian-fluvial interaction contemporary process
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:3342603
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/2XILL650/222186
作者单位	北京师范大学资源学院, 北京 100875, 中国
推荐引用方式 GB/T 7714	马玉凤,严平,宋阳,等. 青海共和盆地多石在沟河道沙丘现代风水交互过程[J]. 北京师范大学,2008,28(4):695-701.
APA	马玉凤,严平,宋阳,杜建会,朱孟郡,&丁连刚.(2008).青海共和盆地多石在沟河道沙丘现代风水交互过程.,28(4),695-701.
MLA	马玉凤,et al."青海共和盆地多石在沟河道沙丘现代风水交互过程".28.4(2008):695-701.