兰州大学机构库
Driving Factors of Recent Vegetation Changes in Hexi Region, Northwest China Based on a New Classification Framework
Wang, Ju1; Xie, Yaowen1,2; Wang, XY(王晓云)1,2; Guo, Kunming1
2020-06
Source PublicationREMOTE SENSING   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
EISSN2072-4292
Volume12Issue:11
page numbers21
AbstractSince 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.
Keywordframework temperature precipitation human activities residual trend Hexi region Agricultural robots Correlation methods Topography Vegetation WatershedsClassification framework Climate variables Climatic factors Inland river basin Natural conditions Normalized difference vegetation index Pearson correlation analysis Vegetation change
PublisherMDPI AG
DOI10.3390/rs12111758
Indexed BySCIE ; EI
Language英语
Funding ProjectPan-Third Pole Environment Study for a Green Silk Road (Pan-TPE)[XDA2009000001] ; National Key Research and Development Program of China entitled, "The impacts of climate change and the civilization change of Silk Road in arid region of central Asia"[2018YFA0606404-03] ; Fundamental Research Funds for the Central Universities[lzujbky-2019-it27][lzujbky-2020-71]
WOS Research AreaRemote Sensing
WOS SubjectRemote Sensing
WOS IDWOS:000543397000063
PublisherMDPI
EI Accession Number20202508842179
EI KeywordsClimate change
EI Classification Number443.1 Atmospheric Properties ; 444.1 Surface Water ; 922.2 Mathematical Statistics ; 951 Materials Science
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/421883
Collection兰州大学
资源环境学院
Corresponding AuthorXie, Yaowen
Affiliation
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
First Author AffilicationCollege of Earth Environmental Sciences
Corresponding Author AffilicationCollege of Earth Environmental Sciences
First Signature AffilicationCollege of Earth Environmental Sciences
Recommended Citation
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]. REMOTE SENSING,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).
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