气候变化领域集成服务门户(CCPortal): Agricultural expansion and the ecological marginalization of forest-dependent people

CCPortal

DOI	10.1073/pnas.2100436118
	Agricultural expansion and the ecological marginalization of forest-dependent people
	Levers C.; Romero-Muñoz A.; Baumann M.; De Marzo T.; Fernández P.D.; Gasparri N.I.; Gavier-Pizarro G.I.; Le Polain de Waroux Y.; Piquer-Rodríguez M.; Semper-Pascual A.; Kuemmerle T.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:44
英文摘要	Agricultural expansion into subtropical and tropical forests causes major environmental damage, but its wider social impacts often remain hidden. Forest-dependent smallholders are particularly strongly impacted, as they crucially rely on forest resources, are typically poor, and often lack institutional support. Our goal was to assess forest-smallholder dynamics in relation to expanding commodity agriculture. Using high-resolution satellite images across the entire South American Gran Chaco, a global deforestation hotspot, we digitize individual forest-smallholder homesteads (n = 23,954) and track their dynamics between 1985 and 2015. Using a Bayesian model, we estimate 28,125 homesteads in 1985 and show that forest smallholders occupy much larger forest areas (>45% of all Chaco forests) than commonly appreciated and increasingly come into conflict with expanding commodity agriculture (18% of homesteads disappeared; n = 5,053). Importantly, we demonstrate an increasing ecological marginalization of forest smallholders, including a substantial forest resource base loss in all Chaco countries and an increasing confinement to drier regions (Argentina and Bolivia) and less accessible regions (Bolivia). Our transferable and scalable methodology puts forest smallholders on the map and can help to uncover the land-use conflicts at play in many deforestation frontiers across the globe. Such knowledge is essential to inform policies aimed at sustainable land use and supply chains. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Commodity frontiers; Deforestation; Livelihoods; Small-scale agriculture; Subtropical and tropical dry forests and savannahs
语种	英语
scopus关键词	Argentina; article; Bolivia; deforestation; forest; human; land use; major clinical study; satellite imagery; savanna
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238322
作者单位	Geography Department, Humboldt-Universität zu Berlin, Berlin, 10099, Germany; Institute for Resources. Environment and Sustainability, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Environmental Geography, Institute for Environmental Studies, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands; Biogeochemical Department, Instituto de Investigación Animal del Chaco Semiárido, Instituto Nacional de Tecnología Agropecuaria, Leales, Tucumán, 4113, Argentina; Instituto de Ecología Regional, CONICET, Universidad Nacional de Tucumán, Tucumán, Yerba Buena, 4107, Argentina; Instituto de Recursos Biológicos, Centro de Investigación en Recursos Naturales, Instituto Nacional de Tecnología Agropecuaria, Buenos Aires, Hurlingham, 1686, Argentina; Institute for the Study of International Development and Department of Geography, McGill University, Montreal, QC H3A 0E6, Canada; Latinamerika-Institut, Freie Univeristät Berlin, Berlin, 14197, Germany; Faculty of Environmental Scien...
推荐引用方式 GB/T 7714	Levers C.,Romero-Muñoz A.,Baumann M.,et al. Agricultural expansion and the ecological marginalization of forest-dependent people[J],2021,118(44).
APA	Levers C..,Romero-Muñoz A..,Baumann M..,De Marzo T..,Fernández P.D..,...&Kuemmerle T..(2021).Agricultural expansion and the ecological marginalization of forest-dependent people.Proceedings of the National Academy of Sciences of the United States of America,118(44).
MLA	Levers C.,et al."Agricultural expansion and the ecological marginalization of forest-dependent people".Proceedings of the National Academy of Sciences of the United States of America 118.44(2021).