Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2010121118 |
Pervasive cropland in protected areas highlight trade-offs between conservation and food security | |
Varsha Vijay; Paul R. Armsworth | |
2021-01-26 | |
发表期刊 | Proceedings of the National Academy of Sciences
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出版年 | 2021 |
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. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/312327 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Varsha Vijay,Paul R. Armsworth. Pervasive cropland in protected areas highlight trade-offs between conservation and food security[J]. Proceedings of the National Academy of Sciences,2021. |
APA | Varsha Vijay,&Paul R. Armsworth.(2021).Pervasive cropland in protected areas highlight trade-offs between conservation and food security.Proceedings of the National Academy of Sciences. |
MLA | Varsha Vijay,et al."Pervasive cropland in protected areas highlight trade-offs between conservation and food security".Proceedings of the National Academy of Sciences (2021). |
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