The mark of vegetation change on Earth's surface energy balance.
The mark of vegetation change on Earth's surface energy balance.
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DOI：
10.1038/s41467-017-02810-8
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发表时间：
2018-02-20
影响因子：
16.6
通讯作者：
Cescatti A
中科院分区：
文献类型：
--
作者：
Duveiller G;Hooker J;Cescatti A
植被覆盖的变化会改变地表的辐射和非辐射特性。相互竞争的生物物理过程对地球表面能量平衡的影响在空间和季节上存在差异，并可根据特定的植被变化和背景气候导致变暖或变冷。本文首次以数据为基础，评估了全球尺度下多种植被转换对地表能量平衡的潜在影响。为此，我们开发了一种新的方法，优化了混合植被覆盖对地表气候的影响。研究表明，2000 - 2015年植被变化对地表能量平衡的扰动导致植被变化地区的地表温度平均升高0.23±0.03℃。这种变暖效应背后的植被转变主要与热带地区的农业扩张有关，在那里，地表变亮和随之产生的净辐射减少并不能抵消与蒸腾作用减少相关的温度升高。这一评估将有助于评估陆基气候变化缓解计划。根据发生的地点和时间，植被覆盖的变化可以通过改变地表能量平衡来影响当地气候。基于卫星数据，本研究首次在全球尺度上对多种植被转变的影响进行了数据驱动评估。
Changing vegetation cover alters the radiative and non-radiative properties of the surface. The result of competing biophysical processes on Earth’s surface energy balance varies spatially and seasonally, and can lead to warming or cooling depending on the specific vegetation change and background climate. Here we provide the first data-driven assessment of the potential effect on the full surface energy balance of multiple vegetation transitions at global scale. For this purpose we developed a novel methodology that is optimized to disentangle the effect of mixed vegetation cover on the surface climate. We show that perturbations in the surface energy balance generated by vegetation change from 2000 to 2015 have led to an average increase of 0.23 ± 0.03 °C in local surface temperature where those vegetation changes occurred. Vegetation transitions behind this warming effect mainly relate to agricultural expansion in the tropics, where surface brightening and consequent reduction of net radiation does not counter-balance the increase in temperature associated with reduction in transpiration. This assessment will help the evaluation of land-based climate change mitigation plans. Depending on where and when it occurs, vegetation cover change can affect local climate by altering the surface energy balance. Based on satellite data, this study provides the first data-driven assessment of such effects for multiple vegetation transitions at global scale.
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影响因子：
4.4
作者：
Hirsch, A. L.;Wilhelm, M.;Seneviratne, S. I.
通讯作者：
Seneviratne, S. I.
影响因子：
4.9
作者：
Lejeune, Quentin;Seneviratne, Sonia I.;Davin, Edouard L.
通讯作者：
Davin, Edouard L.
影响因子：
9.8
作者：
Duveiller G;Hooker J;Cescatti A
通讯作者：
Cescatti A
影响因子：
4.9
作者：
de Noblet-Ducoudre, Nathalie;Boisier, Juan-Pablo;Voldoire, A.
通讯作者：
Voldoire, A.
DOI：
10.1073/pnas.0608998104
发表时间：
2007-04-17
影响因子：
11.1
作者：
Bala, G.;Caldeira, K.;Mirin, A.
通讯作者：
Mirin, A.