干旱区生态环境知识资源中心(Arid): Driving Factors of Recent Vegetation Changes in Hexi Region, Northwest China Based on a New Classification Framework

Arid

DOI	10.3390/rs12111758
	Driving Factors of Recent Vegetation Changes in Hexi Region, Northwest China Based on a New Classification Framework
	Wang, Ju 1; Xie, Yaowen 1,2; Wang, Xiaoyun 1,2; Guo, Kunming 1
通讯作者	Xie, Yaowen
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:11
英文摘要	Since other factors (soil properties, topography, etc.) under natural conditions are relatively invariant over one or two decades, climate variables (precipitation and temperature) and human activities are the two fundamental factors driving vegetation changes in global or large-scale areas. However, the combined effects of either single climatic factor and human activities on vegetation changes and the role of human activities itself in a specific region has not been fully discussed. In this study, the Hexi region, a typical dryland consisting of three inland river basins in northwest China was selected as a case area. A new classification framework combining Pearson correlation analysis and residual trend approach was proposed to assess their individual and conjoint contributions of climate variables and human activities in areas of significant vegetation changes. Our results indicated that most of vegetation covered areas in the Hexi region experienced significant changes during the period 2001-2017, and vegetation improvements were widespread except the interior of oases; significant changes in vegetation caused by human activities, precipitation, the interactions of precipitation and human activities, temperature, the interactions of temperature and human activities, the interactions of temperature and precipitation, and the interactions of the three factors accounted for 50.46%, 16.39%, 19.90%, 4.33%, 2.32%, 2.11%, and 4.49% of the total change areas, respectively. Generally, the influence of temperature was relatively weaker than that of precipitation, and the contributions of the interactions of climate variables and human activities on vegetation changes were greater than that of climate contributions alone. Moreover, the results of various investigations, according to the trends and the time of vegetation changes, indicate that decreasing trends of the normalized difference vegetation index (NDVI) in the Hexi region were chiefly attributed to the adjustments of agricultural planting structure while the comprehensive treatment programs implemented in river basins supported a large proportion of vegetation improvements.
英文关键词	framework temperature precipitation human activities residual trend Hexi region
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000543397000063
WOS关键词	RESIDUAL TREND ANALYSIS ; CLIMATE-CHANGE ; LAND DEGRADATION ; ANTHROPOGENIC FACTORS ; TIBETAN PLATEAU ; RIVER-BASIN ; DYNAMICS ; RESPONSES ; NDVI ; PRECIPITATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319758
作者单位	1.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; 2.Minist Educ MOE, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ju,Xie, Yaowen,Wang, Xiaoyun,et al. Driving Factors of Recent Vegetation Changes in Hexi Region, Northwest China Based on a New Classification Framework[J]. 兰州大学,2020,12(11).
APA	Wang, Ju,Xie, Yaowen,Wang, Xiaoyun,&Guo, Kunming.(2020).Driving Factors of Recent Vegetation Changes in Hexi Region, Northwest China Based on a New Classification Framework.REMOTE SENSING,12(11).
MLA	Wang, Ju,et al."Driving Factors of Recent Vegetation Changes in Hexi Region, Northwest China Based on a New Classification Framework".REMOTE SENSING 12.11(2020).