Detecting vulnerability of humid tropical forests to multiple stressors
Detecting vulnerability of humid tropical forests to multiple stressors
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DOI：
10.1016/j.oneear.2021.06.002
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发表时间：
2021-07
期刊：
影响因子：
16.2
通讯作者：
S. Saatchi;M. Longo;Liang Xu;Yan Yang;H. Abe;Michel André;J. Aukema;N. Carvalhais;H. Cadillo-Quiroz;G. Cerbu;J. Chernela;K. Covey;L. M. Sánchez-Clavijo;Isai V. Cubillos;S. Davies;Veronique de Sy;F. De Vleeschouwer;Á. Duque;Alice Marie Sybille Durieux;Kátia De Avila Fernandes;Luis E. Fernandez;Victoria Gammino;D. Garrity;D. Gibbs;L. Gibbon;G. Y. Gowae;M. Hansen;Nancy Lee Harris;S. Healey;R. Hilton;C. Johnson;R. S. Kankeu;Nadine Therese Laporte-Goetz;H. Lee;T. Lovejoy;M. Lowman;R. Lumbuenamo;Y. Malhi;Jean-Michel M. Albert Martinez;C. Nobre;A. Pellegrini;J. Radachowsky;Francisco Román;D. Russell;D. Sheil;T. Smith;R. Spencer;F. Stolle;H. Tata;D. D. C. Torres-D.;R. Tshimanga;R. Vargas;M. Venter;Joshua West;A. Widayati;Sylvia N. Wilson;S. Brumby;A. Elmore
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文献类型：
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作者：
S. Saatchi;M. Longo;Liang Xu;Yan Yang;H. Abe;Michel André;J. Aukema;N. Carvalhais;H. Cadillo-Quiroz;G. Cerbu;J. Chernela;K. Covey;L. M. Sánchez-Clavijo;Isai V. Cubillos;S. Davies;Veronique de Sy;F. De Vleeschouwer;Á. Duque;Alice Marie Sybille Durieux;Kátia De Avila Fernandes;Luis E. Fernandez;Victoria Gammino;D. Garrity;D. Gibbs;L. Gibbon;G. Y. Gowae;M. Hansen;Nancy Lee Harris;S. Healey;R. Hilton;C. Johnson;R. S. Kankeu;Nadine Therese Laporte-Goetz;H. Lee;T. Lovejoy;M. Lowman;R. Lumbuenamo;Y. Malhi;Jean-Michel M. Albert Martinez;C. Nobre;A. Pellegrini;J. Radachowsky;Francisco Román;D. Russell;D. Sheil;T. Smith;R. Spencer;F. Stolle;H. Tata;D. D. C. Torres-D.;R. Tshimanga;R. Vargas;M. Venter;Joshua West;A. Widayati;Sylvia N. Wilson;S. Brumby;A. Elmore
湿润的热带森林在地球的运行中发挥着主导作用，但受到土地利用和气候变化的威胁越来越大。森林脆弱性是如何在空间和时间上变化的，以及在面临临界点之前森林可以承受的压力水平，人们对此知之甚少。在这里，我们开发了一个热带森林脆弱性指数(TFVI)来检测和评估全球热带森林对跨空间和跨时间威胁的脆弱性。我们发现，气候变化和土地利用变化共同减缓了森林碳循环的恢复速度。作为这种缓慢恢复的一个指标，当气候压力达到临界水平时，地上生物量、初级生产总值和蒸散量的时间自相关显著增加。美洲的森林对这些压力源表现出广泛的脆弱性，而在非洲，森林对气候表现出相对的韧性，在亚洲，森林更容易受到土地利用和碎片化的影响。TFVI可以系统地跟踪热带森林对多种压力因素的反应，并为正在经历关键过渡的区域提供早期预警信号。
Humid tropical forests play a dominant role in the functioning of Earth but are under increasing threat from changes in land use and climate. How forest vulnerability varies across space and time and what level of stress forests can tolerate before facing a tipping point are poorly understood. Here, we develop a tropical forest vulnerability index (TFVI) to detect and evaluate the vulnerability of global tropical forests to threats across space and time. We show that climate change together with land-use change have slowed the recovery rate of forest carbon cycling. Temporal autocorrelation, as an indicator of this slow recovery, increases substantially for above-ground biomass, gross primary production, and evapotranspiration when climate stress reaches a critical level. Forests in the Americas exhibit extensive vulnerability to these stressors, while in Africa, forests show relative resilience to climate, and in Asia reveal more vulnerability to land use and fragmentation. TFVI can systematically track the response of tropical forests to multiple stressors and provide early-warning signals for regions undergoing critical transitions.