干旱区生态环境知识资源中心(Arid): 近地表风沙流结构对过渡带不同下垫面的响应

Arid

	近地表风沙流结构对过渡带不同下垫面的响应
其他题名	Near-surface Sand Flux Structure Responses to Different Underlying Surface in Oasis-desert Ecotone
	王翠 1; 李生宇2 ; 雷加强3 ; 毛东雷 3; 周杰 3
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2014
卷号	28 期号:3 页码:52-56,71
中文摘要	在塔克拉玛干沙漠南缘策勒绿洲一沙漠过渡上选取流动沙地、半流动沙地和固定沙地3个典型下垫面，利用梯度集沙仪测定其近地表10 cm的风沙流结构。结果表明，流动沙地地表0~1 cm的沙粒百分含量随着风速的增大而减小；2~10 cm的沙通量随着风速的增大其百分含量增加，1~2 cm的沙通量存在一个稳定层，幂函数、指数函数和对数函数均能较好地反映其沙通量垂直分布特征，并可以利用风沙流结构来判定地表的蚀积状况；半固定和固定沙地地表由于受到植被盖度影响，其风沙流结构特征表现为近地表0~1 cm沙通量较流动沙地少，2~10 cm的沙通量百分含量较多，且每层沙通量与风速的相关性较差，稳定层在植被盖度的扰动下抬高或者消失，对数函数能较好地反映其风沙流结构特征，地表蚀积状况不可用现存风沙流结构地表蚀积公式来判定。
英文摘要	Selecting mobile sand land, semi-mobile sand land and fixed sand land in Cele oasis-desert ecotone of Taklimakan desert, the sand flux structure of 0~10 cm nearing sand land surface was measured by sand trapper, this experiment had an important significance for wind-blown activity in different underlying surface. The results were as follows: The percentage content of sand near sand land surface 0 ~1 cm decreased with increasing wind speed, at the same time, the percentage content of sand dust flux at the height of 2~10 cm decreased with increase of wind speed. The sand dust flux at the height of 1~2 cm was stable. The vertical distribution characters of sand dust flux could be described by power function, exponential power and logarithmic function and the sand flow structure was used to estimate the soil surface erosion. Because of vegetation coverage, the sand dust flux was less at the height of 0~1 cm, while that was more at the height of 2~10 cm in semi-mobile sand land and fixed sand land,compared with mobile sand land. There was a poor correlation between sand dust flux and wind speed and the stability layer rose or disappeared in semi-mobile sand land and fixed sand land. The sand flux structure could be described by logarithmic function and the existing erosion formula was not used to estimate the soil surface erosion.
中文关键词	风沙流结构 ; 稳定层 ; 垂直分布函数 ; 策勒绿洲一沙漠过渡带
英文关键词	sand flux structure stability layer vertical distribution function Cele oasis-desert ecotone
语种	中文
国家	中国
收录类别	CSCD
WOS类目	OCEANOGRAPHY
WOS研究方向	Oceanography
CSCD记录号	CSCD:5171071
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231768
作者单位	1.中国科学院新疆生态与地理研究所, 干旱荒漠区公路工程技术交通行业重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 3.中国科学院新疆生态与地理研究所, 新疆策勒荒漠草地生态系统国家野外科学观测研究站, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	王翠,李生宇,雷加强,等. 近地表风沙流结构对过渡带不同下垫面的响应[J]. 中国科学院新疆生态与地理研究所,2014,28(3):52-56,71.
APA	王翠,李生宇,雷加强,毛东雷,&周杰.(2014).近地表风沙流结构对过渡带不同下垫面的响应.水土保持学报,28(3),52-56,71.
MLA	王翠,et al."近地表风沙流结构对过渡带不同下垫面的响应".水土保持学报 28.3(2014):52-56,71.