气候变化领域集成服务门户(CCPortal): Pervasive cropland in protected areas highlight trade-offs between conservation and food security

CCPortal

DOI	10.1073/pnas.2010121118
	Pervasive cropland in protected areas highlight trade-offs between conservation and food security
	Vijay V.; Armsworth P.R.
发表日期	2021
ISSN	00278424
卷号	118 期号:4
英文摘要	Global cropland expansion over the last century caused widespread habitat loss and degradation. Establishment of protected areas aims to counteract the loss of habitats and to slow species extinctions. However, many protected areas also include high levels of habitat disturbance and conversion for uses such as cropland. Understanding where and why this occurs may realign conservation priorities and inform protected area policy in light of competing priorities such as food security. Here, we use our global synthesis cropland dataset to quantify cropland in protected areas globally and assess their relationship to conservation aims and socio-environmental context. We estimate that cropland occupies 1.4 million km2 or 6% of global protected area. Cropland occurs across all protected area management types, with 22% occurring in strictly protected areas. Cropland inside protected areas is more prevalent in countries with higher population density, lower income inequality, and with higher agricultural suitability of protected lands. While this phenomenon is dominant in midnorthern latitudes, areas of cropland in protected areas of the tropics and subtropics may present greater trade-offs due to higher levels of both biodiversity and food insecurity. Although area-based targets are prominent in biodiversity goal-setting, our results show that they can mask persistent anthropogenic land uses detrimental to native ecosystem conservation. To ensure the long-term efficacy of protected areas, post-2020 goal setting must link aims for biodiversity and human health and improve monitoring of conservation outcomes in cropland-impacted protected areas. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Area-based targets; CBD; Conservation; Food security; Protected areas
语种	英语
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/180887
作者单位	National Socio-Environmental Synthesis Center, University of Maryland, Annapolis, MD 21401, United States; Department of Ecology and Evolutionary Biology, National Institute for Mathematical and Biological Synthesis, University of Tennessee, Knoxville, TN 37996, United States
推荐引用方式 GB/T 7714	Vijay V.,Armsworth P.R.. Pervasive cropland in protected areas highlight trade-offs between conservation and food security[J],2021,118(4).
APA	Vijay V.,&Armsworth P.R..(2021).Pervasive cropland in protected areas highlight trade-offs between conservation and food security.Proceedings of the National Academy of Sciences of the United States of America,118(4).
MLA	Vijay V.,et al."Pervasive cropland in protected areas highlight trade-offs between conservation and food security".Proceedings of the National Academy of Sciences of the United States of America 118.4(2021).