干旱区生态环境知识资源中心(Arid): 乌兰布和沙漠不同下垫面冬季沙尘通量

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	乌兰布和沙漠不同下垫面冬季沙尘通量
其他题名	Winter Sand-dust Flux over Different Underlying Surfaces in the Ulan Buh Desert
	陈新闯 1; 董智 1; 李锦荣 2; 李红丽 1; 郭建英 2; 贾淑友 1; 代豫杰 1
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2016
卷号	36 期号:6 页码:1527-1532
中文摘要	为揭示乌兰布和沙漠不同下垫面冬季沙尘通量的垂直分布,在野外实地监测的基础上对乌兰布和沙漠3种下垫面冬季输沙量进行测量分析。结果表明:近地表0~100cm高度内冬季输沙量流动沙丘>梭梭固定沙丘>白刺半固定沙丘。各下垫面输沙量随高度呈下降趋势,流动沙丘、白刺半固定沙丘、梭梭固定沙丘符合幂函数分布,流动沙丘、梭梭固定沙丘输沙量集中于0~20cm高度,白刺半固定沙丘集中于0~40cm高度。风沙流幂函数通量系数a、b与粒径<0.1mm和粒径>0.5mm颗粒含量负相关,与粒径0.1~0.25mm颗粒含量正相关,与粒径0.25~0.5mm颗粒含量不相关。沙粒跃移高度在流动沙丘、白刺半固定沙丘和梭梭固定沙丘分别集中于0~ 3.59、0~4.33和0~2.36cm;跃移高度与粒径<0.05mm和0.1~0.5mm颗粒含量正相关,尤其与粒径0.1~ 0.25mm颗粒含量呈指数函数正相关,与粒径0.05~0.1mm及>0.5mm颗粒含量无明显相关性。乌兰布和沙漠流动沙丘在冬季仍具有较大的侵蚀状态,白刺半固定沙丘处于弱风蚀状态,梭梭固定沙丘处于堆积状态,造成地表积沙。在冬季,梭梭固定沙丘仍然发挥着防风固沙的能力,成为冬季固定风沙的重要防线。
英文摘要	In order to reveal the vertical distribution of dust over different underlying surfaces in the Ulan Buh Desert in winter,the sediment discharge of 3 kinds of underlying surfaces were analyzed based on the actual monitoring data in winter.The total sediment discharge of 0-100 cm height in winter was mobile dune >fixed dune>semi-fixed sand dune.The sediment discharge over 3 kinds of underlying surfaces all decreased with height and conformed to power function distribution.The sediment discharges over mobile dune,fixed dune were concentrated in0-20 cm height and the sediment discharge over semi-fixed sand dune was mainly concentrated in 0-40 cm height.The coefficients aand b was negatively correlated with the concentration of<0.1 mm particles and>0.5 mm particles,and was positively correlated with the concentration of 0.1-0.25 mm particles,and no correlation with the concentration of 0.25-0.5 mm particles. The saltation heights over mobile dune,fixed dune and semi-fixed sand dune were 3.59 cm,2.36 cm and 4.33 cm,respectively.There was a positive correlation between the saltation height and the concentrations of <0.05 mm and 0.1-0.5 mm particles,especially there was an exponential function relationship with the concentrations of 0.1-0.25 mm particles,but there was no significant relationship with the concentrations of 0.05~0.1 mm and>0.5 mm particles.The mobile dune in the Ulan Buh Desert was still in serious erosion in winter,and semi-fixed sand dune was basically stable,and fixed dune was in the accumulation state. Fixed dune was still play a role in sand fixation in winter.
中文关键词	输沙量 ; 下垫面 ; 相关性 ; 风沙流系数
英文关键词	sediment underlying surface correlation the coefficient of sand flow
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5910374
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235456
作者单位	1.山东农业大学林学院/泰山森林生态站, 山东省土壤侵蚀与生态修复重点实验室, 泰安, 山东 271018, 中国; 2.水利部牧区水利科学研究所, 呼和浩特, 内蒙古 010020, 中国
推荐引用方式 GB/T 7714	陈新闯,董智,李锦荣,等. 乌兰布和沙漠不同下垫面冬季沙尘通量[J],2016,36(6):1527-1532.
APA	陈新闯.,董智.,李锦荣.,李红丽.,郭建英.,...&代豫杰.(2016).乌兰布和沙漠不同下垫面冬季沙尘通量.中国沙漠,36(6),1527-1532.
MLA	陈新闯,et al."乌兰布和沙漠不同下垫面冬季沙尘通量".中国沙漠 36.6(2016):1527-1532.