Response of Land Surface Temperature to Heatwave-Induced Bio-Geophysical Changes in Tropical Forests on Hainan Island from 2010 to 2022
文献类型： 外文期刊
作者： Li, Yunshuai 1 ; Shao, Xinyuan 1 ; Wu, Zhixiang 2 ; Sun, Zhongyi 1 ; Li, Mingzhe 3 ; Jiang, Lingxiu 3 ; Xian, Yuanhong 3 ; Wang, Peng 1 ;
作者机构： 1.Hainan Univ, Sch Ecol & Environm, Haikou 570228, Peoples R China
2.Natl Observat & Res Stn, Hainan Danzhou Trop Agroecosyst, Danzhou 571737, Peoples R China
3.Carbon Source & Sink Field Sci Observat & Res Stn, Sanya 572022, Peoples R China
4.Chinese Acad Trop Agr Sci CATAS, Rubber Res Inst, Haikou 571101, Peoples R China
5.China Geol Survey, Haikou Ctr Marine Geol Survey, Haikou 571127, Peoples R China
6.Key Lab Nat Resource Coupling Proc & Effects, Beijing 100055, Peoples R China
关键词： land surface temperature; heatwave; rubber plantation ecosystem
期刊名称：WATER （ 影响因子：3.4； 五年影响因子：3.5 ）
ISSN：
年卷期： 2024 年 16 卷 5 期
页码：
收录情况： SCI
摘要： Land surface temperature plays an important role in the water cycle and surface energy balance. Using data collected by a vorticity covariance tower from 2010 to 2022, the relative threshold method and TRM method were employed to study the land-atmosphere exchange of water and the heat flux of rubber forest ecosystems under heatwave and non-heatwave conditions. The results show that the latent heat flux, sensible heat flux, and incoming and outgoing radiation increase from non-heatwave to heatwave conditions. In addition, the multi-year average LST was 6.7 degrees C higher under HW conditions than under non-HW conditions at the 99% confidence level. Further attribution analysis demonstrates that heatwave-induced land surface temperature change is mainly governed by atmospheric factors rather than by land surface factors. Specifically, radiative forcing shows the largest positive contribution, which is partly offset by the negative contributions of air temperature and relative humidity. In particular, the contributions of radiative forcing, air temperature, relative humidity, and atmospheric pressure to LST were 14.70 K, -4.76 K, -5.86 K, and -0.04 K, respectively. Moreover, surface resistance contributed to LST by 2.42 K, aerodynamic resistance by -0.23 K, and soil heat flux by -0.91 K.
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