The Ongoing Greening in Southwest China despite Severe Droughts and Drying Trends

被引：10

作者：

Chen, Xin ^{[1
]}

Chen, Tiexi ^{[1
]}

Yan, Qingyun ^{[2
]}

Cai, Jiangtao ^{[1
]}

Guo, Renjie ^{[1
]}

Gao, Miaoni ^{[1
]}

Wei, Xueqiong ^{[1
]}

Zhou, Shengjie ^{[1
]}

Li, Chaofan ^{[1
]}

Xie, Yong ^{[1
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Sch Geog Sci, Nanjing 210044, Peoples R China

[2] Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Peoples R China

来源：

REMOTE SENSING | 2021年 / 13卷 / 17期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

drought events; drying trend; greening; land management; GROSS PRIMARY PRODUCTION; PATTERNS; CLIMATE;

D O I：

10.3390/rs13173374

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Vegetation greening, which refers to the interannual increasing trends of vegetation greenness, has been widely found on the regional to global scale. Meanwhile, climate extremes, especially several drought, significantly damage vegetation. The Southwest China (SWC) region experienced massive drought from 2009 to 2012, which severely damaged vegetation and had a huge impact on agricultural systems and life. However, whether these extremes have significantly influenced long-term (multiple decades) vegetation change is unclear. Using the latest remote sensing-based records, including leaf area index (LAI) and gross primary productivity (GPP) for 1982-2016 and enhanced vegetation index (EVI) for 2001-2019, drought events of 2009-2012 only leveled off the greening (increasing in vegetation indices and GPP) temporally and long-term greening was maintained. Meanwhile, drying trends were found to unexpectedly coexist with greening.

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页数：15

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