干旱区生态环境知识资源中心(Arid): 19752018年民勤绿洲沙漠化过程及其驱动机制

Arid

	19752018年民勤绿洲沙漠化过程及其驱动机制
其他题名	The aeolian desertification process and driving mechanism of Minqin Oasis from 1975 to 2018
	李军豪; 陈勇; 杨国靖; 周立华
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2021
卷号	41 期号:3 页码:1000-694X
中文摘要	根据19752018年民勤绿洲土地沙漠化分类体系及遥感影像数据,探究了民勤绿洲沙漠化时空变化过程;选取影响绿洲沙漠化的自然与人为驱动因子,运用主成分分析方法定量评价了民勤绿洲沙漠化过程的主要驱动力。结果表明:19752018年沙漠化程度以重度沙漠化为主,轻度、中度、重度和严重沙漠化面积均呈减少趋势,以2000年为界表现为先发展后逆转趋势;19752000年,轻度、中度、重度沙漠化重心总体向东北方向迁移,严重沙漠化的重心向西迁移,沙漠化有向绿洲东北部和巴丹吉林沙漠发展的趋势;20002018年轻度沙漠化的重心向西北方向迁移,中度、重度和严重沙漠化重心相对稳定,绿洲沙漠化发展得到明显控制。在绿洲沙漠化过程中,人为因素贡献率为39.53%,自然与人为综合贡献率为26.58%,自然因素贡献率为10.77%,人为因素是民勤绿洲沙漠化的主要驱动力。水资源极度匮乏是绿洲沙漠化的决定因素,在以后的防沙治沙工作中,合理调控人类的生产经营活动,优化干旱区水资源配置,可从源头上治理民勤绿洲的沙漠化。
英文摘要	Based on the land aeolian desertification data and remote sensing image data of Minqin Oasis from 1975 to 2018,the temporal and spatial changes of Minqin Oasis aeolian desertification in different periods are explored;By selecting the natural and man-made driving factors that affect the aeolian desertification change of the oasis,the principal component analysis method is used to quantitatively evaluate the main driving forces of the aeolian desertification process of the Minqin oasis.The result shows:The degree of aeolian desertification from 1975 to 2018 is dominated by aeolian severe desertification,and the areas of slight,moderate,severe and extremely severe aeolian desertification all show a decreasing trend,and the trend of first development and then reversal is shown in 2000 as the boundary;From 1975 to 2000,the center of gravity of slight,moderate and severe aeolian desertification migrated to the northeast,and the center of gravity of extremely severe aeolian desertification migrated to the west.Desertification tended to develop toward the northeastern oasis and the Badain Jaran Desert;from 2000 to 2018,the center of gravity of slight aeolian desertification moved to the northwest.The center of gravity of moderate,severe and extremely severe aeolian desertification land is relatively stable,and the development of oasis aeolian desertification land is obviously controlled.In the process of oasis aeolian desertification,the contribution rate of human factors is 39.53%,the combined contribution rate of natural and human factors is 26.58%,and the contribution rate of natural factors is 10.77%.Human factors are the main driving force for the desertification of Minqin Oasis.The extreme scarcity of water resources is a decisive factor in the aeolian desertification of oasis.In the future sand prevention and control work,combining human driving factors,rationally regulating human production and operation activities,and optimizing the allocation of water resources in arid areas,the aeolian desertification of Minqin Oasis can be controlled from the source.
中文关键词	民勤绿洲 ; 沙漠化 ; 沙漠化过程 ; 驱动力
英文关键词	Minqin Oasis aeolian desertification aeolian desertification process driving force
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:6981178
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365444
作者单位	李军豪, 中国科学院西北生态环境资源研究院;;中国科学院大学, 中国科学院内陆河流域生态水文重点实验室;;, 兰州;;, 甘肃;;北京 730000;;100049, 中国.; 陈勇, 中国科学院西北生态环境资源研究院, 中国科学院沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国.; 杨国靖, 中国科学院西北生态环境资源研究院, 中国科学院内陆河流域生态水文重点实验室, 兰州, 甘肃 730000, 中国.; 周立华, 中国科学院科技战略咨询研究院, 北京 100190, 中国.
推荐引用方式 GB/T 7714	李军豪,陈勇,杨国靖,等. 19752018年民勤绿洲沙漠化过程及其驱动机制[J]. 中国科学院西北生态环境资源研究院,2021,41(3):1000-694X.
APA	李军豪,陈勇,杨国靖,&周立华.(2021).19752018年民勤绿洲沙漠化过程及其驱动机制.中国沙漠,41(3),1000-694X.
MLA	李军豪,et al."19752018年民勤绿洲沙漠化过程及其驱动机制".中国沙漠 41.3(2021):1000-694X.