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Understanding the impacts of 'Grain for Green' land management practice on land greening dynamics over the Loess Plateau of China
Liu, Zhengjia1,2; Wang, Jieyong1,2; Wang, Xiaoyue1,2; Wang, Yongsheng1,2
2020-12-01
Source PublicationLAND USE POLICY
ISSN0264-8377
Volume99Pages:11
Corresponding AuthorLiu, Zhengjia(liuzj@igsnrr.ac.cn) ; Wang, Jieyong(wjy@igsnrr.ac.cn)
AbstractLand greening in China is regarded as contributing a great deal to greening of the Earth. The phenomenon is mainly attributed to climate change, arising atmospheric CO2 and 'Grain for Green' (GFG) land management policies. However, limited knowledge is known how much land greening is from contributions of the GFG practice. Therefore, the study took the typical region of the GFG practice, the Loess Plateau, as the study area, and used 1982-2015 satellite-observed GIMMS3g normalized difference vegetation index (NDVI) data, ERA Interim climatic variables (precipitation, temperature and solar radiation) and atmospheric CO2 concentration data with the help of a developed TPRC-based NDVI model to derive GFG-induced NDVI after 1999. Furthermore, this study tracked the spatial-temporal dynamics of GFG-induced NDVI and assessed contributions of the GFG practice to regional vegetation changes. Results showed that satellite-observed NDVI and TPRC-based NDVI both exhibited an increasing spatial pattern from the northwestern to southeastern Loess Plateau, but their greening trends were separately 0.0022 and 0.0009 per year in 1982-2015 (p < 0.05). Note that the satellite observed greening trend was much steeper with a slope of 0.0056 per year after 2006 (p < 0.05). The subsequent analyses documented that GFG-induced land greening were largely responsible for the steep trend. In space, evident greening patterns began to be observed in the central Loess Plateau from 2006 to 2008, afterwards expanded towards eastern and southwestern Loess Plateau. In 2011-2015, the increase magnitude of GFGinduced land greening in the Loess Plateau averagely accounted for 8.5 % in comparison to estimated TPRCbased NDVI, but in six natural zones were various, ranging from 3.2%-15.7%. In some regions of central Loess Plateau, GFG-induced NDVI contributed even more than 20 % to vegetation increase. This study highlights that land use management contributes more to land greening dynamics over the Loess Plateau compared to climate change and arising atmospheric CO2 concentration. These findings likely provide some valuable information for curbing or enhancing specific-location vegetation changes in future regional land management and planning.
KeywordThe 'Grain for Green' practice GIMMS3g NDVI Spatial residual analysis The TPRC-based NDVI model The Loess Plateau
DOI10.1016/j.landusepol.2020.105084
WOS KeywordTIBETAN PLATEAU ; SOIL-MOISTURE ; UP DATE ; VEGETATION ; PATTERNS ; CLIMATE ; COVER ; TRENDS ; NDVI ; RESTORATION
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0504701] ; National Natural Science Foundation of China[41971218] ; National Natural Science Foundation of China[41601582] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070302]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Studies
WOS IDWOS:000594487500009
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/137287
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Zhengjia; Wang, Jieyong
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhengjia,Wang, Jieyong,Wang, Xiaoyue,et al. Understanding the impacts of 'Grain for Green' land management practice on land greening dynamics over the Loess Plateau of China[J]. LAND USE POLICY,2020,99:11.
APA Liu, Zhengjia,Wang, Jieyong,Wang, Xiaoyue,&Wang, Yongsheng.(2020).Understanding the impacts of 'Grain for Green' land management practice on land greening dynamics over the Loess Plateau of China.LAND USE POLICY,99,11.
MLA Liu, Zhengjia,et al."Understanding the impacts of 'Grain for Green' land management practice on land greening dynamics over the Loess Plateau of China".LAND USE POLICY 99(2020):11.
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