globalchange  > 过去全球变化的重建
DOI: 10.1111/gcb.14627
WOS记录号: WOS:000467441900024
论文题名:
Satellite detection of cumulative and lagged effects of drought on autumn leaf senescence over the Northern Hemisphere
作者: Peng, Jie1,2; Wu, Chaoyang1,2; Zhang, Xiaoyang3; Wang, Xiaoyue1; Gonsamo, Alemu4
通讯作者: Wu, Chaoyang
刊名: GLOBAL CHANGE BIOLOGY
ISSN: 1354-1013
EISSN: 1365-2486
出版年: 2019
卷: 25, 期:6, 页码:2174-2188
语种: 英语
英文关键词: autumn phenology ; cumulative effect ; drought ; lagged effect
WOS关键词: LAND-SURFACE PHENOLOGY ; NET ECOSYSTEM PRODUCTIVITY ; WATER-USE EFFICIENCY ; CLIMATE-CHANGE ; VEGETATION PHENOLOGY ; TEMPORAL DYNAMICS ; 3 DECADES ; RESPONSES ; CHINA ; VARIABILITY
WOS学科分类: Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向: Biodiversity & Conservation ; Environmental Sciences & Ecology
英文摘要:

Climate change has substantial influences on autumn leaf senescence, that is, the end of the growing season (EOS). Relative to the impacts of temperature and precipitation on EOS, the influence of drought is not well understood, especially considering that there are apparent cumulative and lagged effects of drought on plant growth. Here, we investigated the cumulative and lagged effects of drought (in terms of the Standardized Precipitation-Evapotranspiration Index, SPEI) on EOS derived from the normalized difference vegetation index (NDVI3g) data over the Northern Hemisphere extra-tropical ecosystems (>30 degrees N) during 1982-2015. The cumulative effect was determined by the number of antecedent months at which SPEI showed the maximum correlation with EOS (i.e., Rmax-cml) while the lag effect was determined by a month during which the maximum correlation between 1-month SPEI and EOS occurred (i.e., Rmax-lag). We found cumulative effect of drought on EOS for 27.2% and lagged effect for 46.2% of the vegetated land area. For the dominant time scales where the Rmax-cml and Rmax-lag occurred, we observed 1-4 accumulated months for the cumulative effect and 2-6 lagged months for the lagged effect. At the biome level, drought had stronger impacts on EOS in grasslands, savannas, and shrubs than in forests, which may be related to the different root functional traits among vegetation types. Considering hydrological conditions, the mean values of both Rmax-cml and Rmax-lag decreased along the gradients of annual SPEI and its slope, suggesting stronger cumulative and lagged effects in drier regions as well as in areas with decreasing water availability. Furthermore, the average accumulated and lagged months tended to decline along the annual SPEI gradient but increase with increasing annual SPEI. Our results revealed that drought has strong cumulative and lagged effects on autumn phenology, and considering these effects could provide valuable information on the vegetation response to a changing climate.


Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/139914
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.South Dakota State Univ, Dept Geog, GSCE, Brookings, SD 57007 USA
4.Univ Toronto, Dept Geog & Planning, Toronto, ON, Canada

Recommended Citation:
Peng, Jie,Wu, Chaoyang,Zhang, Xiaoyang,et al. Satellite detection of cumulative and lagged effects of drought on autumn leaf senescence over the Northern Hemisphere[J]. GLOBAL CHANGE BIOLOGY,2019-01-01,25(6):2174-2188
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Peng, Jie]'s Articles
[Wu, Chaoyang]'s Articles
[Zhang, Xiaoyang]'s Articles
百度学术
Similar articles in Baidu Scholar
[Peng, Jie]'s Articles
[Wu, Chaoyang]'s Articles
[Zhang, Xiaoyang]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Peng, Jie]‘s Articles
[Wu, Chaoyang]‘s Articles
[Zhang, Xiaoyang]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.