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Fire Regime Impacts on Postfire Diurnal Land Surface Temperature Change Over North American Boreal Forest

文献类型：期刊论文

作者Zhao, Jie2; Wang, Liang3; Hou, Xin2; Li, Guangyao2; Tian, Qi2; Chan, Eme4; Ciais, Philippe5; Yu, Qiang6,7,8; Yue, Chao1,2,6
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2021-12-16
卷号126期号:23页码:14
关键词boreal forest diurnal temperature change fire regime forest fire land surface temperature North America
ISSN号2169-897X
DOI10.1029/2021JD035589
通讯作者Wang, Liang(wangliang.cn@163.com) ; Yue, Chao(chaoyue@ms.iswc.ac.cn)
英文摘要Wildfire is the most prevalent natural disturbance in the North American boreal forest (NABF) and can cause postfire land surface temperature change (Delta T-fire) through biophysical processes. Fire regimes, such as fire severity, fire intensity, and percentage of burned area (PBA), may influence Delta T-fire through their impacts on postfire vegetation damage and, if so, there may be important feedbacks between fire regime and climate warming through biophysical effects. Here, we employ satellite observations to investigate postfire diurnal Delta T-fire across NABF. We further use a stepwise multiple linear regression model to examine the driving factors for Delta T-fire by incorporating latitude, fire regime variables, and their interactions. Our results demonstrate a pronounced asymmetry in diurnal Delta T-fire, characterized by daytime warming in contrast to nighttime cooling. Clear latitudinal patterns are found in Delta T-fire, with stronger effects in lower latitudes. Such latitudinal patterns of Delta T-fire, especially the daytime one, are driven by both latitudinal patterns in fire regimes and an increased sensitivity of Delta T-fire to fire regime as the latitude decreases. The multiple linear regression model explains 37% of the variance in daytime Delta T-fire, whereas for the nighttime Delta T-fire the explanatory power is rather low (5%). For daytime Delta T-fire, fire severity accounted for most (43.65%) of the model explanatory power, followed by PBA (24.60%) and fire intensity (13.10%). Our results highlight important fire regime impacts on daytime Delta T-fire and, further, on the annual Delta T-fire, suggesting that fire might amplify future boreal climate change through positive feedbacks between fire regime and postfire surface warming.
WOS关键词RADIATIVE POWER ; ORGANIC-MATTER ; SOIL-MOISTURE ; BURN SEVERITY ; CLIMATE ; CARBON ; INTENSITY ; ENERGY ; SIZE ; VULNERABILITY
资助项目National Natural Science Foundation of China[U20A2090] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; Open Research Foundation of Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection of Linyi University[STKF201926]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000729996000036
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Open Research Foundation of Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection of Linyi University
源URL[http://ir.igsnrr.ac.cn/handle/311030/168904]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Liang; Yue, Chao
作者单位1.Northwest A&F Univ, Coll Forestry, Yangling, Shaanxi, Peoples R China
2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Shaanxi, Peoples R China
3.Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi, Shandong, Peoples R China
4.China Univ Geosci Wuhan, Sch Publ Adm, Wuhan, Peoples R China
5.CEA CNRS UVSQ, Lab Sci Climat & Environm, Gif Sur Yvette, France
6.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
7.Univ Technol Sydney, Sch Life Sci, Sydney, NSW, Australia
8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Jie,Wang, Liang,Hou, Xin,et al. Fire Regime Impacts on Postfire Diurnal Land Surface Temperature Change Over North American Boreal Forest[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2021,126(23):14.
APA Zhao, Jie.,Wang, Liang.,Hou, Xin.,Li, Guangyao.,Tian, Qi.,...&Yue, Chao.(2021).Fire Regime Impacts on Postfire Diurnal Land Surface Temperature Change Over North American Boreal Forest.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(23),14.
MLA Zhao, Jie,et al."Fire Regime Impacts on Postfire Diurnal Land Surface Temperature Change Over North American Boreal Forest".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.23(2021):14.

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来源：地理科学与资源研究所

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