Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14310 |
Large-scale prerain vegetation green-up across Africa | |
Adole, Tracy1; Dash, Jadunandan1; Atkinson, Peter M.1,2,3 | |
2018-09-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:9页码:4054-4068 |
文章类型 | Article |
语种 | 英语 |
国家 | England; North Ireland |
英文摘要 | Information on the response of vegetation to different environmental drivers, including rainfall, forms a critical input to ecosystem models. Currently, such models are run based on parameters that, in some cases, are either assumed or lack supporting evidence (e.g., that vegetation growth across Africa is rainfall-driven). A limited number of studies have reported that the onset of rain across Africa does not fully explain the onset of vegetation growth, for example, drawing on the observation of prerain flush effects in some parts of Africa. The spatial extent of this prerain green-up effect, however, remains unknown, leaving a large gap in our understanding that may bias ecosystem modelling. This paper provides the most comprehensive spatial assessment to-date of the magnitude and frequency of the different patterns of phenology response to rainfall across Africa and for different vegetation types. To define the relations between phenology and rainfall, we investigated the spatial variation in the difference, in number of days, between the start of rainy season (SRS) and start of vegetation growing season (SOS); and between the end of rainy season (ERS) and end of vegetation growing season (EOS). We reveal a much more extensive spread of prerain green-up over Africa than previously reported, with prerain green-up being the norm rather than the exception. We also show the relative sparsity of postrain green-up, confined largely to the Sudano-Sahel region. While the prerain green-up phenomenon is well documented, its large spatial extent was not anticipated. Our results, thus, contrast with the widely held view that rainfall drives the onset and end of the vegetation growing season across Africa. Our findings point to a much more nuanced role of rainfall in Africa's vegetation growth cycle than previously thought, specifically as one of a set of several drivers, with important implications for ecosystem modelling. |
英文关键词 | Africa climate change ecosystem models rainfall vegetation phenology |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000441746900015 |
WOS关键词 | LAND-SURFACE PHENOLOGY ; TERRESTRIAL CARBON-CYCLE ; TREE-GRASS INTERACTIONS ; CLIMATE-CHANGE ; WEST-AFRICA ; SATELLITE-OBSERVATIONS ; TROPICAL SAVANNAS ; FOREST PHENOLOGY ; PLANT PHENOLOGY ; LEAF PRODUCTION |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17724 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Southampton, Global Environm Change & Earth Observat Res Grp, Geog & Environm, Southampton SO17 1BJ, Hants, England; 2.Univ Lancaster, Fac Sci & Technol, Lancaster, England; 3.Queens Univ Belfast, Sch Geog Archaeol & Palaeoecol, Belfast, Antrim, North Ireland |
推荐引用方式 GB/T 7714 | Adole, Tracy,Dash, Jadunandan,Atkinson, Peter M.. Large-scale prerain vegetation green-up across Africa[J]. GLOBAL CHANGE BIOLOGY,2018,24(9):4054-4068. |
APA | Adole, Tracy,Dash, Jadunandan,&Atkinson, Peter M..(2018).Large-scale prerain vegetation green-up across Africa.GLOBAL CHANGE BIOLOGY,24(9),4054-4068. |
MLA | Adole, Tracy,et al."Large-scale prerain vegetation green-up across Africa".GLOBAL CHANGE BIOLOGY 24.9(2018):4054-4068. |
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