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Divergent vegetation responses to extreme spring and summer droughts in Southwestern China
Song, LS (Song, Lisheng)1,3,4; Li, Y (Li, Yan)2; Ren, YH (Ren, Yanghang)5; Wu, XC (Wu, Xiuchen)2; Guo, B (Guo, Bo)1; Tang, XG (Tang, Xuguang)1,4; Shi, WY (Shi, Weiyu)1,4; Ma, MG (Ma, Mingguo)1,4; Han, XJ (Han, Xujun)1,4; Zhao, L (Zhao, Long)1,4
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
2019
Volume279Issue:0Pages:107703
DOI10.1016/j.agrformet.2019.107703
Abstract

In the winter and spring of 2009-2010 and summer of 2011, Southwestern China was hit by two severe drought events that are unprecedented over the past three decades with substantial economic damage. The understanding of how vegetation growth responds to extreme drought events in different seasons is inadequate, and underlying mechanisms are unclear. Here, we investigated the impacts of the 2009-2010 winter-spring drought and 2011 summer drought on vegetation growth and productivity in Southwestern China, using multiple remote sensing vegetation indexes including Normalized Difference Vegetation Index, Enhanced Vegetation Index, gross primary productivity/net primary productivity and vegetation optical depth. Our analyses reveal that severe soil moisture deficit in 2009-2010 winter-spring drought resulted in reduction in evapotranspiration, Enhanced Vegetation Index (0.047) and gross primary productivity (1.833 P cg) /net primary productivity in 2010 spring, worse decreased Normalized Difference Vegetation Index (0.135) and decreased vegetation optical depth in summer. By contrast, the 2011 summer drought led to enhanced vegetation greenness and higher summer gross primary productivity (1.272 P cg) /net primary productivity (0.546) compared with normal years (2007-2008), due to increased solar radiation over forests region. Our study highlights the divergent responses of vegetation to extreme drought events occurred in different seasons.

Subject AreaAtmospheric Sciences
WOS IDWOS:000500197400014
Language英语
Indexed BySCI
KeywordAgricultural Drought Water-resources Karst Growth Tolerance Forests Canopy Index Heat
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
Cooperation Status国内
ISSN0168-1923
Department环境变化与地表过程重点实验室
URL查看原文
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9061
Collection图书馆
Corresponding AuthorSong, LS (Song, Lisheng); Shi, WY (Shi, Weiyu)
Affiliation1.Southwest Univ, Sch Geog Sci, Chongqing Jinfo Mt Field Sci Observat & Res Stn K, Chongqing, Peoples R China;
2.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resources Ecol, Beijing, Peoples R China;
3.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China;
4.Southwest Univ, State Cultivat Base Ecoagr Southwest Mt Land, Chongqing, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Song, LS ,Li, Y ,Ren, YH ,et al. Divergent vegetation responses to extreme spring and summer droughts in Southwestern China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,279(0):107703.
APA Song, LS .,Li, Y .,Ren, YH .,Wu, XC .,Guo, B .,...&Zhao, L .(2019).Divergent vegetation responses to extreme spring and summer droughts in Southwestern China.AGRICULTURAL AND FOREST METEOROLOGY,279(0),107703.
MLA Song, LS ,et al."Divergent vegetation responses to extreme spring and summer droughts in Southwestern China".AGRICULTURAL AND FOREST METEOROLOGY 279.0(2019):107703.
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