干旱区生态环境知识资源中心(Arid): Ecosystem structural changes controlled by altered rainfall climatology in tropical savannas

Arid

DOI	10.1038/s41467-019-08602-6
	Ecosystem structural changes controlled by altered rainfall climatology in tropical savannas
	Zhang, Wenmin 1,2; Brandt, Martin 1; Penuelas, Josep 3,4; Guichard, Francoise 5,6; Tong, Xiaoye 1; Tian, Feng 1,7; Fensholt, Rasmus 1
通讯作者	Zhang, Wenmin
来源期刊	NATURE COMMUNICATIONS
EISSN	2041-1723
出版年	2019
卷号	10
英文摘要	Tropical savannas comprise mixed woodland grassland ecosystems in which trees and grasses compete for water resources thereby maintaining the spatial structuring of this ecosystem. A global change in rainfall climatology may impact the structure of tropical savanna ecosystems by favouring woody plants, relative to herbaceous vegetation. Here we analysed satellite data and observed a relatively higher increase in woody vegetation (5%) as compared to the increase in annual maximum leaf area index (LAI(max), an indicator of the total green vegetation production) (3%) in arid and semi-arid savannas over recent decades. We further observed a declining sensitivity of LAI(max) to annual rainfall over 56% of the tropical savannas, spatially overlapping with areas of increased woody cover and altered rainfall climatology. This suggests a climate-induced shift in the coexistence of woody and herbaceous vegetation in savanna ecosystems, possibly caused by altered hydrological conditions with significance for land cover and associated biophysical effects such as surface albedo and evapotranspiration.
类型	Article
语种	英语
国家	Denmark ; Peoples R China ; Spain ; France ; Sweden
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000458175300020
WOS关键词	VEGETATION LEAF-AREA ; WOODY COVER ; AFRICAN SAVANNAS ; DETERMINANTS ; PRODUCTIVITY ; EVENTS ; ENCROACHMENT ; VARIABILITY ; COMPETITION ; REDUCTION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	南京大学 ; E17
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217742
作者单位	1.Univ Copenhagen, Dept Geosci & Nat Resource Management, DK-1350 Copenhagen, Denmark; 2.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China; 3.UAB, CSIC, CREAF, Global Ecol Unit, Bellaterra 08193, Catalonia, Spain; 4.CREAF, Cerdanyola Del Valles 08193, Catalonia, Spain; 5.CNRS, UMR 3589, CNRM, 42 Ave Gaspard Coriolis, F-31057 Toulouse, France; 6.Meteo France, 42 Ave Gaspard Coriolis, F-31057 Toulouse, France; 7.Lund Univ, Dept Phys Geog & Ecosyst Sci, S-22362 Lund, Sweden
推荐引用方式 GB/T 7714	Zhang, Wenmin,Brandt, Martin,Penuelas, Josep,et al. Ecosystem structural changes controlled by altered rainfall climatology in tropical savannas[J]. 南京大学, E17,2019,10.
APA	Zhang, Wenmin.,Brandt, Martin.,Penuelas, Josep.,Guichard, Francoise.,Tong, Xiaoye.,...&Fensholt, Rasmus.(2019).Ecosystem structural changes controlled by altered rainfall climatology in tropical savannas.NATURE COMMUNICATIONS,10.
MLA	Zhang, Wenmin,et al."Ecosystem structural changes controlled by altered rainfall climatology in tropical savannas".NATURE COMMUNICATIONS 10(2019).