Change in terrestrial human footprint drives continued loss of intact ecosystems-猫眼课题宝

DOI：

10.1101/2020.05.04.077818

发表时间：

2020-05

期刊：

bioRxiv

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

B. Williams;O. Venter;J. Allan;Scott C. Atkinson;Jose A. Rehbein;Michelle S. Ward;M. Marco;H. Grantham;J. Ervin;S. Goetz;A. Hansen;P. Jantz;Rajeev Pillay;Susana Rodríguez‐Buriticá;Christina Supples;Anne L. S. Virnig;J. Watson

由于强大的计算能力、地球观测卫星网络以及新的自下而上的人口普查和众包数据，我们绘制人类在地球上的影响力的能力已经发展。在这里，我们提供了最新的陆地人类足迹的时间上可比较的地图，并评估了全球，生物群落和生态区域尺度上人类压力的变化。在2013年，42%的地球陆地可以被认为相对没有人为干扰，25%可以被归类为“荒野”（人类足迹谱中退化最少的一端）。在2000年至2013年期间，190万平方公里--相当于墨西哥的面积--相对不受人类干扰的土地受到了高度改造。其中大部分发生在热带和亚热带草原，萨凡纳草原和灌木林生态系统中，但东南亚的雨林也经历了快速的变化。我们的研究结果表明，人类的足迹正在侵蚀地球上最后一个完整的生态系统，迫切需要做出更大的努力来保护它们。

Our ability to map humanity’s influence across Earth has evolved, thanks to powerful computing, a network of earth observing satellites, and new bottom-up census and crowd-sourced data. Here, we provide the latest temporally inter-comparable maps of the terrestrial Human Footprint, and assessment of change in human pressure at global, biome, and ecoregional scales. In 2013, 42% of terrestrial Earth could be considered relatively free of anthropogenic disturbance, and 25% could be classed as ‘wilderness’ (the least degraded end of the human footprint spectrum). Between 2000 and 2013, 1.9 million km2 - an area the size of Mexico - of land relatively free of human disturbance became highly modified. The majority of this occurred within tropical and subtropical grasslands, savannah, and shrubland ecosystems, but the rainforests of Southeast Asia also underwent rapid modification. Our results show that humanity’s footprint is eroding Earth’s last intact ecosystems, and greater efforts are urgently needed to retain them.

Change in terrestrial human footprint drives continued loss of intact ecosystems

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