干旱区生态环境知识资源中心(Arid): 50 years of woody vegetation changes in the Ferlo (Senegal) assessed by high-resolution imagery and field surveys

Arid

DOI	10.1007/s10113-020-01724-4
	50 years of woody vegetation changes in the Ferlo (Senegal) assessed by high-resolution imagery and field surveys
	Dendoncker, Morgane; Brandt, Martin; Rasmussen, Kjeld; Taugourdeau, Simon; Fensholt, Rasmus; Tucker, Compton J.; Vincke, Caroline
通讯作者	Dendoncker, M
来源期刊	REGIONAL ENVIRONMENTAL CHANGE
ISSN	1436-3798
EISSN	1436-378X
出版年	2020
卷号	20 期号:4
英文摘要	Woody vegetation dynamics in the Sahel have been debated since the great droughts of the 1970s-1980s. Here, we combined high-resolution satellite and aerial imagery, field inventory, and historical botanical records to study woody vegetation trends over the years 1965, 1980, 2008, and 2018 in the Ferlo, the Sahelian sylvo-pastoral zone of Senegal. While tree density has decreased from 1965 (14.8 trees ha(-1)) to 1980 (13.4 trees ha(-1)) and 2008 (11.9 trees ha(-1)), tree density has stabilized in 2018 (12.2 trees ha(-1)). The relatively moderate decrease in tree density over 50 years characterized by extensive human pressure and droughts, as well as the rather stable woody cover following the drought years after the 1980s, do not support narratives of widespread desertification in this region. However, we observed a shift in the composition of species. While the drought-resistant tree Balanites aegyptiaca showed a stable abundance, Acacia tortilis showed strong increases and other species like Sclerocarya birrea and Combretum glutinosum decreased. In addition, recent field surveys show that the ratio between shrubs and trees has increased towards more shrubs. The observed loss of species diversity combined with the increase of drought-resistant species is in line with current observations for savanna ecosystems in the context of an increased aridity.
英文关键词	Woody vegetation Senegal Sahel High-resolution imagery Field inventory Temporal trends
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000595677000001
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327840
作者单位	[Dendoncker, Morgane; Vincke, Caroline] Catholic Univ Louvain, Earth & Life Inst, 2 L7-05-09, B-1348 Louvain La Neuve, Belgium; [Brandt, Martin; Rasmussen, Kjeld; Fensholt, Rasmus] Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark; [Taugourdeau, Simon] CIRAD UMR SELMET PPZS, Dakar, Senegal; [Taugourdeau, Simon] Univ Montpellier, SUPAGRO, INRA, UMR,SELMET,CIRAD, Montpellier, France; [Tucker, Compton J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
推荐引用方式 GB/T 7714	Dendoncker, Morgane,Brandt, Martin,Rasmussen, Kjeld,et al. 50 years of woody vegetation changes in the Ferlo (Senegal) assessed by high-resolution imagery and field surveys[J],2020,20(4).
APA	Dendoncker, Morgane.,Brandt, Martin.,Rasmussen, Kjeld.,Taugourdeau, Simon.,Fensholt, Rasmus.,...&Vincke, Caroline.(2020).50 years of woody vegetation changes in the Ferlo (Senegal) assessed by high-resolution imagery and field surveys.REGIONAL ENVIRONMENTAL CHANGE,20(4).
MLA	Dendoncker, Morgane,et al."50 years of woody vegetation changes in the Ferlo (Senegal) assessed by high-resolution imagery and field surveys".REGIONAL ENVIRONMENTAL CHANGE 20.4(2020).