气候变化领域集成服务门户(CCPortal): The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China

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DOI	10.1016/j.agrformet.2019.01.036
	The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China
	Li, Xiangyi; Li, Yue; Chen, Anping; Gao, Mengdi; Slette, Ingrid J.; Piao, Shilong
通讯作者	Piao, SL (通讯作者)
发表日期	2019
ISSN	0168-1923
EISSN	1873-2240
起始页码	239
结束页码	248
卷号	269
英文摘要	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.
关键词	PRECIPITATION EVAPOTRANSPIRATION INDEX GROSS PRIMARY PRODUCTION NET PRIMARY PRODUCTION TREE MORTALITY CLIMATE EXTREMES WATER-USE ECOSYSTEM FOREST KARST MODEL
英文关键词	Drought; Southwest China; Vegetation growth; Terrestrial carbon balance
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000463120900022
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259477
推荐引用方式 GB/T 7714	Li, Xiangyi,Li, Yue,Chen, Anping,et al. The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China[J]. 中国科学院青藏高原研究所,2019,269.
APA	Li, Xiangyi,Li, Yue,Chen, Anping,Gao, Mengdi,Slette, Ingrid J.,&Piao, Shilong.(2019).The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China.AGRICULTURAL AND FOREST METEOROLOGY,269.
MLA	Li, Xiangyi,et al."The impact of the 2009/2010 drought on vegetation growth and terrestrial carbon balance in Southwest China".AGRICULTURAL AND FOREST METEOROLOGY 269(2019).