Deforestation-induced warming over tropical mountain regions regulated by elevation
Deforestation-induced warming over tropical mountain regions regulated by elevation
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森林砍伐引起的热带山区变暖受海拔调节
DOI：
10.1038/s41561-020-00666-0
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发表时间：
2020-12
影响因子：
18.3
通讯作者：
Yu Fen
中科院分区：
文献类型：
--
作者：
Zhenzhong Zeng;Dashan Wang;Long Yang;Jie Wu;Alan D. Ziegler;Maofeng Liu;Philippe Ciais;Timothy D. Searchinger;Zong-Liang Yang;Deliang Chen;Anping Chen;Laurent Z. X. Li;Shilong Piao;David Taylor;Xitian Cai;Ming Pan;Liqing Peng;Peirong Lin;Drew Gower;Yu Fen
热带山区的农业正在扩大，但其对气候的影响却知之甚少。在这里，我们通过将卫星观测到的森林覆盖变化整合到高分辨率土地-大气耦合模型中，研究海拔如何调节热带山区森林砍伐对生物物理气候的影响。我们发现，2000年至2014年间最近的森林转变使东南亚地块的区域变暖增加了0.022±0.002°C，Barisan山脉（东南亚沿海地区）增加了0.010±0.007°C，埃斯皮尼亚索山脉（南美洲）增加了0.042±0.010°C，以及0.047±0.047°C。当地旱季阿尔伯丁裂谷山脉（非洲）气温为 0.008 °C。由于森林砍伐导致的局部温度异常可高达 2°C，其中森林转化范围广泛。山区森林砍伐造成的变暖取决于海拔高度，反照率增加导致降温，蒸散量减少导致变暖，这两者相互交织且相反。随着海拔的增加，反照率效应的重要性增加，变暖效应减弱，类似于之前强调的森林砍伐引起的变暖随纬度增加而减少的情况。由于大多数新农田正在侵占中低海拔地区的土地，森林砍伐会因蒸散量受到抑制而导致气温升高。这种额外的变暖对农作物产量、土地退化和附近完整生态系统生物多样性的影响应纳入未来的评估中。
Agriculture is expanding in tropical mountainous areas, yet its climatic effect is poorly understood. Here, we investigate how elevation regulates the biophysical climate impacts of deforestation over tropical mountainous areas by integrating satellite-observed forest cover changes into a high-resolution land–atmosphere coupled model. We show that recent forest conversion between 2000 and 2014 increased the regional warming by 0.022 ± 0.002 °C in the Southeast Asian Massif, 0.010 ± 0.007 °C in the Barisan Mountains (Maritime Southeast Asia), 0.042 ± 0.010 °C in the Serra da Espinhaço (South America) and 0.047 ± 0.008 °C in the Albertine Rift mountains (Africa) during the local dry season. The deforestation-driven local temperature anomaly can reach up to 2 °C where forest conversion is extensive. The warming from mountain deforestation depends on elevation, through the intertwined and opposing effects of increased albedo causing cooling and decreased evapotranspiration causing warming. As the elevation increases, the albedo effect increases in importance and the warming effect decreases, analogous to previously highlighted decreases of deforestation-induced warming with increasing latitude. As most.new croplands are encroaching lands at low to moderate elevations, deforestation produces higher warming from suppressed evapotranspiration. Impacts of this additional warming on crop yields, land degradation and biodiversity of nearby intact ecosystems should be incorporated into future assessments.
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影响因子：
1.6
作者：
Becker, Alfred;Koerner, Christian;Tappeiner, Ulrike
通讯作者：
Tappeiner, Ulrike
影响因子：
3.1
作者：
T. Tsuda;T. Inoue;S. Kato;S. Fukao;D. Fritts;T. Vanzandt
通讯作者：
T. Tsuda;T. Inoue;S. Kato;S. Fukao;D. Fritts;T. Vanzandt
影响因子：
11.6
作者：
Zhenzhong Zeng;Drew Gower;E. Wood
通讯作者：
Zhenzhong Zeng;Drew Gower;E. Wood
DOI：
10.1029/2004eo210004
发表时间：
2004-05
期刊：
Eos, Transactions American Geophysical Union
影响因子：
--
作者：
R. Pielke;C. Davey;J. Morgan
通讯作者：
R. Pielke;C. Davey;J. Morgan
DOI：
10.1002/2013jd020657
发表时间：
2013-11
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
Dan Li;E. Bou‐Zeid;M. Barlage;Fei Chen;J. Smith
通讯作者：
Dan Li;E. Bou‐Zeid;M. Barlage;Fei Chen;J. Smith