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Linking changes in ejido land tenure to changes in landscape patterns over 30 years across Yucatán , México
Regional Environmental Change ( IF 4.2 ) Pub Date : 2020-11-21 , DOI: 10.1007/s10113-020-01722-6
Ted J. Lawrence , Stephen J. Morreale , Richard C. Stedman , Leo V. Louis

México’s ejidos are shifting away from community-managed, and toward individually managed lands. Shifting land tenure is a mechanism for modern agricultural development that drives changes to landscape patterns, and loss of mature forestland. Such forest conversion is conspicuous across México’s Yucatán peninsula. Thus, México’s federal government recently identified the peninsula as a high priority region for landscape conservation. However, few studies have examined the link between changes in ejido land tenure and changes in landscape patterns. We examined spatial-temporal relationships between shifting ejido land tenure and subsequent changes to landscape patterns among 710 ejidos (2.5 million ha) across the State of Yucatán. Our analysis focused on a series of years preceding and a series of years following the changes to México’s constitution that legalized parcelization of ejido lands. Our research questions were (1) how have land cover patterns changed over time and (2) after two decades of legal parcelization, did land cover patterns differ between individually managed and community-managed ejido lands? To investigate these questions, we used recent and historic remotely sensed satellite images to map and analyze changes to land cover patterns over 30 years, and related them to changes in land tenure arrangement, particularly among ejidos pre- and post-parcelization. We show that changes in ejido land tenure contributed to changes in land cover patterns, and that individually managed areas and highly parcelized ejidos exhibited a much greater increase in crop and grassland cover, and therefore a much greater increase in deforested lands, than common areas and community-managed ejidos. Moreover, we show that individually managed areas and highly parcelized ejidos exhibited higher annual deforestation rates than common areas and community-managed ejidos. Therefore, our research demonstrates that even in dry tropical forested regions, common property protects forests. We conclude that individually managed and privatized lands, especially for agricultural development, can threaten the conservation potential of community-managed landscapes in Yucatán and beyond.



中文翻译:

将墨西哥尤卡坦州30年来的ejido土地使用权变化与景观格局变化联系起来

墨西哥的ejidos正在从社区管理的土地转移到个人管理的土地。土地使用权转移是现代农业发展的一种机制,可驱动景观格局的变化和成熟林地的丧失。在墨西哥的尤卡坦半岛上,这种森林转换尤为明显。因此,墨西哥联邦政府最近将半岛确定为景观保护的重点地区。但是,很少有研究检查过ejido土地使用权的变化与景观格局的变化之间的联系。我们研究了尤卡坦州710个ejido(250万公顷)之间,随着ejido土地使用权的改变与景观格局的变化之间的时空关系。我们的研究问题是:(1)土地覆盖方式会随着时间的变化而变化;(2)在经过二十年的法律分割之后,单独管理的ejido土地和社区管理的ejido土地的土地覆盖方式是否有所不同?为了调查这些问题,我们使用了最近的和历史的遥感卫星图像来绘制和分析30年来土地覆盖格局的变化,并将它们与土地保有权安排的变化相关联,特别是在ejidos宗地化前后。我们发现,依吉多(Ejido)土地保有权的变化导致了土地覆盖方式的变化,并且单独管理的区域和高度零散的依吉多(Ejido)的农作物和草地覆盖率增加了很多,因此,与普通地区相比,森林砍伐的土地增加了更多社区管理的ejidos。此外,我们显示,与公共区域和社区管理的ejidos相比,单独管理的区域和高度分散的ejidos的年度森林砍伐率更高。因此,我们的研究表明,即使在干燥的热带森林地区,共同财产也可以保护森林。我们得出的结论是,单独管理和私有化的土地,特别是用于农业发展的土地,可能威胁尤卡坦州及以后地区社区管理景观的保护潜力。

更新日期:2020-11-22
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