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

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

引用次数: 5

Abstract

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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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

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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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.