气候变化领域集成服务门户(CCPortal): Accelerating savanna degradation threatens the Maasai Mara socio-ecological system

CCPortal

DOI	10.1016/j.gloenvcha.2019.102030
	Accelerating savanna degradation threatens the Maasai Mara socio-ecological system
	Li W.; Buitenwerf R.; Munk M.; Amoke I.; Bøcher P.K.; Svenning J.-C.
发表日期	2020
ISSN	0959-3780
卷号	60
英文摘要	Savanna megafauna have become scarce outside of protected areas in Africa, largely because of land conversion for farming (smallholders and agribusiness) and expansion of settlements and other infrastructure. Intensification also isolates protected areas, even affecting natural processes within reserve boundaries. Here, we used satellite imagery from the past 32 years in the iconic Maasai Mara ecosystem to assess the capacity of different land tenures to prevent degradation. We compare unprotected land with two types of conservation management: fully protected land without livestock (land sparing) and semi-protected community-based conservation – protected land with regulated livestock densities (land sharing). On unprotected land (61% of the area), we detected massive and accelerating degradation and fragmentation of natural vegetation, with large losses of woodland (62%) and grassland (56%), resulting in the expansion of bare ground. In contrast, directional change was minimal in both types of protected areas. Vegetation resistance to drought was lowest on unprotected land, intermediate under community-based conservation and highest under full protection. Our results show that the Mara ecosystem is under heavy pressure, but that conservation management counteracts negative trends. Importantly, semi-protected community-based land-sharing conservation offers clear, partial buffering against degradation. © 2019 Elsevier Ltd
英文关键词	Africa; Ecosystem degradation; Social-ecological systems; Sustainability
语种	英语
scopus关键词	conservation management; environmental degradation; grassland; livestock; protected area; satellite imagery; savanna; sustainability; woodland; Kenya; Masai Mara; Narok
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/142086
作者单位	Section for Ecoinformatics and Biodiversity, Department of Bioscience, Aarhus University, Ny Munkegade 114, Aarhus C, 8000, Denmark; Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Aarhus University, Ny Munkegade 114, Aarhus C, 8000, Denmark; The State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100101, China; Kenya Wildlife Trust, P.O. Box 86-005200, Nairobi, Karen, Kenya; Maasai Mara Wildlife Conservancies Association, P O Box 984, Narok, 20500, Kenya
推荐引用方式 GB/T 7714	Li W.,Buitenwerf R.,Munk M.,et al. Accelerating savanna degradation threatens the Maasai Mara socio-ecological system[J],2020,60.
APA	Li W.,Buitenwerf R.,Munk M.,Amoke I.,Bøcher P.K.,&Svenning J.-C..(2020).Accelerating savanna degradation threatens the Maasai Mara socio-ecological system.Global Environmental Change,60.
MLA	Li W.,et al."Accelerating savanna degradation threatens the Maasai Mara socio-ecological system".Global Environmental Change 60(2020).