全球变化威胁下的全球生物多样性热点60年土地利用和土地覆盖变化动态

IF 2.7 4区环境科学与生态学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Journal of Land Use Science Pub Date : 2021-11-02 DOI:10.1080/1747423X.2021.2011970

Katherine Hermosilla-Palma, P. Pliscoff, Mauricio Folchi

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引用次数: 5

摘要

由于森林种植园的扩张，智利的Constitución县显示了世界上最高的景观变化之一。本文描述了Constitución县60多年来的土地利用/覆被动态。结果表明，1955年全县自然植被覆盖率达60%。然而，到1975年，人工林增加到36%，到2014年达到72%。这种扩大主要是通过取代原生植被来实现的，这表明在第701号法令(1974)之前就有证据表明森林人工林对原生植被的影响。人工林扩张导致自然生境破碎化和丧失，到2014年，50%的剩余生境表现为低生境质量。最后，在2017年，一场野火烧毁了77%和42%的剩余原始森林和灌木丛。这些结果显示了森林人工林的长期影响，表明有必要转向新的可持续森林模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sixty years of land-use and land-cover change dynamics in a global biodiversity hotspot under threat from global change

ABSTRACT Constitución County in Chile shows one of the highest landscape transformations in the world due to the expansion of forest plantations. This work describes the land use/cover dynamics over a long period extending over 60 years in Constitución County. The results showed that 60% of the county extent was covered by natural vegetationt in 1955. However, forest plantation increased to 36% by 1975 and reached 72% by 2014. This expansion was mainly achieved by replacing native vegetation revealing evidence of the impact of forest plantations on native vegetation even before decree-law 701 (1974). Forest plantation expansion produced fragmentation and loss of natural habitat, and 50% of the remaining habitats showed low habitat quality by 2014. Finally, in 2017 a wildfire burned 77% and 42% of the remaining native forest and shrubland. These results showed the long-lasting impact of forest plantations, underpinning the need to move towards a new sustainable forest model.

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来源期刊

Journal of Land Use Science Environmental Science-Management, Monitoring, Policy and Law

CiteScore

5.40

自引率

6.20%

发文量

期刊介绍： The Journal of Land Use Science provides a central outlet for high-quality articles on theoretical and empirical aspects of land-use science at the interface of social and environmental systems. The Journal brings together an array of research perspectives at multiple temporal, spatial and social scales that contribute a better understanding of land-system dynamics and communicate scientific advances towards attaining land-system sustainability.