干旱区生态环境知识资源中心(Arid): 河西走廊绿洲边缘新月形沙丘的动态变化及其与气象因子的关系

Arid

	河西走廊绿洲边缘新月形沙丘的动态变化及其与气象因子的关系
其他题名	Dynamic changes of barchan dunes and its relationship with meteorological factors along oasis fringe in Hexi Corridor
	石学刚 1; 李广 1; 刘世增 2; 魏雅倩 1
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2018
卷号	53 期号:2 页码:86-93
中文摘要	【目的】探明新月形沙丘的动态变化及其与气象因子之间的相互关系,为防沙治沙提供理论依据.【方法】在河西绿洲边缘选取了7个典型的样点,用Goolge Earth对各个样点沙丘的形态参数进行测量,并将所得数据与气象要素之间进行相关性分析.【结果】受风速、大风日数等因子的影响,民勤地区沙丘移动最快,移动速度为6.2 m/a,受主风向等因子的影响,敦煌地区沙丘移动最慢,移动速度为0.8m/a;受不同气象要素的影响,与2006年相比,河西大多数地区的沙丘迎风坡水平长增加,背风坡水平长减小;影响沙丘动态变化的3个主因子为年降水量、年平均风速、年大风日数,其中年降水量在气象因子中的贡献率最大.【结论】气象因子对沙丘动态变化的影响既有正向作用,也有逆向作用.
英文摘要	【Objective】In order to explore the dynamic changes of the Barchan Dunes and its relationship with meteorological factors,to provide a theoretical basis for prevent and control desertification. 【Method】Seven typical sample areas were selected at the oasis fringe of Hexi Corridor.Use the Goolge Earth to measure the morphological parameters of the Barchan Dunes at every sample areas.The correlation was analyzed between the data and climate factors.【Result】The fastest dunes movement speed was found at 6.2m/a in Minqin area,affected by the wind speed,annual strong wind days and other factors. The sand dunes moved the slowest in Dunhuang area,the movement speed was at 0.8m/a,affected by the main wind direction and other factors.Most of the windward slope length increased and the leeward slope length decreased when compared with 2006in Hexi Corridor,affected by different meteorological factors. The three main factors that affected the dune dynamic were annual precipitation,annual average wind speed,annual strong wind days.The annual precipitation had the largest contribution rate in all meteorological factors.【Conclusion】The meteorological factors have both positive and adverse effects on dynamic changes of Barchan Dunes.
中文关键词	绿洲边缘 ; 新月形沙丘 ; 气象因子 ; 动态变化
英文关键词	oasis fringe barchan dunes meteorological factors dynamic changes
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6257363
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237524
作者单位	1.甘肃农业大学林学院, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学林学院;;甘肃省治沙研究所, ;;, 兰州;;兰州, 甘肃;;甘肃 730070;;730070, 中国
推荐引用方式 GB/T 7714	石学刚,李广,刘世增,等. 河西走廊绿洲边缘新月形沙丘的动态变化及其与气象因子的关系[J]. 甘肃农业大学,2018,53(2):86-93.
APA	石学刚,李广,刘世增,&魏雅倩.(2018).河西走廊绿洲边缘新月形沙丘的动态变化及其与气象因子的关系.甘肃农业大学学报,53(2),86-93.
MLA	石学刚,et al."河西走廊绿洲边缘新月形沙丘的动态变化及其与气象因子的关系".甘肃农业大学学报 53.2(2018):86-93.