Forests buffer thermal fluctuation better than non-forests

0525294 - ÚVGZ 2021 RIV NL eng J - Journal Article
Lin, H. - Tu, C. - Fang, J. - Gioli, B. - Loubet, B. - Gruening, C. - Zhou, G. - Beringer, J. - Huang, J. - Dušek, Jiří - Liddell, M. - Buysse, P. - Shi, P. - Song, Q. - Han, S. - Magliulo, V. - Li, Y. - Grace, J.
Forests buffer thermal fluctuation better than non-forests.
Agricultural and Forest Meteorology. Roč. 288, JUL (2020), č. článku 107994. ISSN 0168-1923. E-ISSN 1873-2240
Research Infrastructure: CzeCOS III - 90123
Institutional support: RVO:86652079
Keywords : climate-change * vegetation * temperature * drought * inertia * afforestation * deforestation * feedbacks * extremes * benefits * Deforestation * Global warming * Extreme temperature * Temperature mitigation * Thermal effects * Vegetation index
OECD category: Agriculture
Impact factor: 5.734, year: 2020
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0168192320300964?via%3Dihub

With the increase in intensity and frequency of extreme climate events, interactions between vegetation and local climate are gaining more and more attention. Both the mean temperature and the temperature fluctuations of vegetation will exert thermal influence on local climate and the life of plants and animals. Many studies have focused on the pattern in the mean canopy surface temperature of vegetation, whereas there is still no systematic study of thermal buffer ability (TBA) of different vegetation types across global biomes. We developed a new method to measure TBA based on the rate of temperature increase, requiring only one radiometer. With this method, we compared TBA of ten vegetation types with contrasting structures, e.g. from grasslands to forests, using data from 133 sites globally. TBA ranged from 5.2 to 21.2 across these sites and biomes. Forests and wetlands buffer thermal fluctuation better than non-forests (grasslands, savannas, and croplands), and the TBA boundary between forests and non-forests was typically around 10. Notably, seriously disturbed and young planted forests displayed a greatly reduced TBA as low as that of non-forests at high latitudes. Canopy height was a primary controller of TBA of forests, while the TBA of grasslands and savannas were mainly determined by energy partition, water availability, and carbon sequestration rates. Our research suggests that both mean values and fluctuations in canopy surface temperature should be considered to predict the risk for plants under extreme events. Protecting mature forests, both at high and low latitudes, is critical to mitigate thermal fluctuation under extreme events.
Permanent Link: http://hdl.handle.net/11104/0309472