气候变化领域集成服务门户(CCPortal): Water memory effects and their impacts on global vegetation productivity and resilience

CCPortal

DOI	10.1038/s41598-018-21339-4
	Water memory effects and their impacts on global vegetation productivity and resilience
	Liu, Laibao; Zhang, Yatong; Wu, Shuyao; Li, Shuangcheng; Qin, Dahe
发表日期	2018
ISSN	2045-2322
卷号	8
英文摘要	Memory effects refer to the impacts of antecedent climate conditions on current vegetation productivity. This temporal linkage has been found to be strong in arid and semi-arid regions. However, the dominant climatic factors that determine such patterns are still unclear. Here, we defined 'water-memory effects' as the persistent effects of antecedent precipitation on the vegetation productivity for a given memory length (from 1 to up to 12 months). Based on satellite observations and climate data, we quantified the length of water-memory effects and evaluated the contributions of antecedent precipitation on current vegetation. Our results showed that vegetation productivity was highly dependent on antecedent precipitation in arid and semi-arid regions. The average length of water memory was approximately 5.6 months. Globally, water-memory effects could explain the geographical pattern and strength of memory effects, indicating that precipitation might be the dominant climatic factor determining memory effects because of its impact on water availability. Moreover, our results showed vegetation in regions with low mean annual precipitation or a longer water memory has lower engineering resilience (i.e. slower recovery rate) to disturbances. These findings will enable better assessment of memory effects and improve our understanding of the vulnerability of vegetation to climate change.
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
来源期刊	SCIENTIFIC REPORTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158525
作者单位	Li, SC (corresponding author), Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China.; Li, SC (corresponding author), Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Laibao,Zhang, Yatong,Wu, Shuyao,et al. Water memory effects and their impacts on global vegetation productivity and resilience[J],2018,8.
APA	Liu, Laibao,Zhang, Yatong,Wu, Shuyao,Li, Shuangcheng,&Qin, Dahe.(2018).Water memory effects and their impacts on global vegetation productivity and resilience.SCIENTIFIC REPORTS,8.
MLA	Liu, Laibao,et al."Water memory effects and their impacts on global vegetation productivity and resilience".SCIENTIFIC REPORTS 8(2018).