干旱区生态环境知识资源中心(Arid): 两种戈壁地表风沙流特征的野外观测

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	两种戈壁地表风沙流特征的野外观测
其他题名	Sand flux characteristics in two areas of the Gobi desert
	刘旭阳; 宁文晓; 王振亭
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2020
卷号	37 期号:4 页码:1087-1094
中文摘要	分析植被覆盖和人工扰动下戈壁地表的风沙流结构和摩阻风速与输沙率之间的关系,对保护戈壁区的生态环境具有重要意义。本文分别对植被覆盖下的戈壁地表和人工清除植被后的戈壁地表进行研究。结果显示:在不同的地表条件下,风沙流结构的变化趋势基本相同,大致可以分为3类:波动减少、先增加后减少和单调减少。受扰地表的输沙率密度大于原始地表。将摩阻风速以0.50 m·s~(-1)为界分为高、低风速。在植被覆盖的地表中,高、低风速区的输沙率与摩阻风速之间没有明显的线性相关性;而在人工清除植被后的地表,高风速区内,输沙率与摩阻风速之间满足传统的低阶多项式的关系,低风速区内两者之间则没有线性关系。
英文摘要	The aeolian sand structure and the relationship between wind speed and sediment transport rate over the surfaces of the Gobi desert with vegetation cover and affected by artificial disturbance are analyzed in the present study,which is of great significance for the protection of the ecological environment of the Gobi.The Gobi surface under vegetation cover and the surface after artificial plant removal were investigated.The results show that the pattern of variation in the aeolian sand structure under different surface conditions was basically the same,and can be roughly divided into three categories:fluctuating decrease,decrease before increase,and continuous decrease.The sediment transport density of the disturbed surface was higher than that of the original surface.The friction wind speed was divided into high and low wind speed with a boundary of 0.50 m·s~(-1).There was no significant correlation between the sand transport rate and friction wind speed in high and low wind speed zones on vegetation-covered land.However,after artificial vegetation removal,the relationship between high wind speed zones,sediment transport rate,and friction wind speed conforms to the traditional low-order polynomial,while there was no such correlation in the low-wind speed area.
中文关键词	戈壁地表 ; 风沙流结构 ; 输沙率 ; 摩阻风速
英文关键词	Gobi aeolian sand structure sand flux transport rate friction wind speed
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6834410
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353513
作者单位	刘旭阳, 中国科学院西北生态环境资源研究院,沙漠与沙漠化研究室;;中国科学院大学, ;;, 兰州;;, 甘肃;;北京 730000;;100049, 中国. 宁文晓, 中国科学院西北生态环境资源研究院,沙漠与沙漠化研究室;;中国科学院大学, ;;, 兰州;;, 甘肃;;北京 730000;;100049, 中国. 王振亭, 中国科学院西北生态环境资源研究院,沙漠与沙漠化研究室, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	刘旭阳,宁文晓,王振亭. 两种戈壁地表风沙流特征的野外观测[J],2020,37(4):1087-1094.
APA	刘旭阳,宁文晓,&王振亭.(2020).两种戈壁地表风沙流特征的野外观测.干旱区研究,37(4),1087-1094.
MLA	刘旭阳,et al."两种戈壁地表风沙流特征的野外观测".干旱区研究 37.4(2020):1087-1094.