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The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China
Li, XY (Li, Xiangyi)1; Li, Y (Li, Yue)1; Chen, AP (Chen, Anping)2; Gao, MD (Gao, Mengdi)1; Slette, IJ (Slette, Ingrid J.)2; Piao, SL (Piao, Shilong)1,4
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
2019
Volume269Issue:0Pages:239-248
DOI10.1016/j.agrformet.2019.01.036
Abstract

The 2009/2010 drought in Southwest China was a "once in a century drought" event. This drought event had strong adverse impacts, such as water scarcity, crop failure, and economic loss, on ecosystems and the human society. Explicit representations of this drought event and associated changes in vegetation dynamics and carbon cycle, however, are still largely missed in literature. Here we used the standardized anomaly of 3-month Standard Precipitation-Evapotranspiration Index (SPEI) to characterize this 2009/2010 drought event, including its onset and end months, duration and severity. We examined the drought impacts on vegetation greenness using Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI); and assessed the terrestrial carbon flux responses to drought using data from satellite-based datasets, atmospheric inversion, one data-based model, and three ecosystem models. Our analysis showed that this "autumn-winter-spring" drought mostly suppressed vegetation growth in Yunnan, North Guangxi, Guizhou and East Sichuan. In comparisons to the same months of the reference period (2000-2015), the drought caused a large reduction in carbon uptake (4.4 +/- 5 gCm(-2) month(-1)) from the decrease in gross primary production (GPP, 5.7 +/- 9.5 gCm(-2) month(-1)), although ecosystem respiration (TER) also decreased by a smaller extent (1.3 +/- 5.1 gCm(-2) month(-1)). Nonetheless, more than 65% of the drought-impacted area recovered in both vegetation greenness and productivity within 3 months, while about 10% of the drought-affected area failed to recover even after 6 months post the drought event. Across different vegetation types, forests and shrubs had stronger capability of drought resistance and shorter post-drought recovery time than crops and grasses. Model comparison reveals that while data from different sources generally agreed on the sign of vegetation greenness and carbon flux responses to drought, they differ significantly in the extent of such responses.

Subject AreaAtmospheric Sciences
WOS IDWOS:000463120900022
Language英语
Indexed BySCI
KeywordPrecipitation Evapotranspiration Index Gross Primary Production Net Primary Production Tree Mortality Climate Extremes Water-use Ecosystem Forest Karst Model
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
Cooperation Status国际
ISSN0168-1923
Department高寒生态与人类适应
URL查看原文
PublisherELSEVIER
SubtypeArticle
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9303
Collection图书馆
Corresponding AuthorPiao, SL (Piao, Shilong)
Affiliation1.Peking Univ, Sino French Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing 100871, Peoples R China;
2.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA;
3.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Ctr Excellence Tibetan Earth Sci, Key Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China.
Recommended Citation
GB/T 7714
Li, XY ,Li, Y ,Chen, AP ,et al. The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,269(0):239-248.
APA Li, XY ,Li, Y ,Chen, AP ,Gao, MD ,Slette, IJ ,&Piao, SL .(2019).The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China.AGRICULTURAL AND FOREST METEOROLOGY,269(0),239-248.
MLA Li, XY ,et al."The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China".AGRICULTURAL AND FOREST METEOROLOGY 269.0(2019):239-248.
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