The impacts of vegetation on the soil surface freezing-thawing processes at permafrost southern edge simulated by an improved process-based ecosystem model

doi:10.1016/j.ecolmodel.2021.109663

	The impacts of vegetation on the soil surface freezing-thawing processes at permafrost southern edge simulated by an improved process-based ecosystem model
	Liu, Zhenhai 2; Chen, Bin 1; Wang, Shaoqiang 1,2,3; Wang, Qinyi 2; Chen, Jinghua 1,3; Shi, Weibo 2; Wang, Xiaobo 1,3; Liu, Yuanyuan 1,3; Tu, Yongkai 2; Huang, Mei 1,3
刊名	ECOLOGICAL MODELLING
	2021-09-15
卷号	456 页码:12
关键词	Freeze-thaw Vegetation Model improvement Soil temperature
ISSN号	0304-3800
DOI	10.1016/j.ecolmodel.2021.109663
通讯作者	Chen, Bin(chenbin@igsnrr.ac.cn) ; Wang, Shaoqiang(sqwang@igsnrr.ac.cn)
英文摘要	Permafrost degradation due to climate warming would potentially increase the release of previously frozen soil carbon and change the carbon budget of the cold region ecosystem. The underlying permafrost degradation would be effectively mediated by soil surface freezing-thawing (FT) processes. Aboveground vegetation can regulate soil FT processes, however its effects on ground thermal transfer have not been well represented by ecosystem models. In this study, we improved the hydrothermal module of the Boreal Ecosystem Productivity Simulator (BEPS) through more careful parameterization of snowpack density, puddled water, soil organic matter and super-cooled soil water. The impacts of vegetation on the soil surface FT processes have also been investigated using the improved BEPS model and the measured soil temperature data at forest and grassland sites on the southern edge of permafrost region in Mongolia and northeastern China. The improved BEPS model performs better than the original model in simulations of soil temperature and soil FT processes. Smaller amplitudes of soil diurnal FT cycles were found in forest sites compared to grassland sites. Forest sites have delayed soil thaw timing and similar soil freezing time compared to grassland sites. Differences in snow depths and soil organic matter content due to distinct vegetation community structures have considerable influences on the disparity in soil FT processes. Thus, it is important to improve the simulation of the impacts of vegetation on soil surface FT processes for better forecasting the permafrost degradation.
资助项目	Science and Technology Strategic Pilot of the Chinese Academy of Sci-ences[XDA20030203]
WOS关键词	REMOTE-SENSING DATA ; CARBON-DIOXIDE ; PRODUCTIVITY SIMULATOR ; HINGGAN MOUNTAINS ; WATER FLUXES ; ACTIVE LAYER ; FOREST ; TEMPERATURE ; CLIMATE ; CANOPY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000685088600003
资助机构	Science and Technology Strategic Pilot of the Chinese Academy of Sci-ences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164565]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, Bin; Wang, Shaoqiang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.China Univ Geosci, Sch Geog & Informat Engn, Key Lab Reg Ecol & Environm Change, Wuhan 430074, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zhenhai,Chen, Bin,Wang, Shaoqiang,et al. The impacts of vegetation on the soil surface freezing-thawing processes at permafrost southern edge simulated by an improved process-based ecosystem model[J]. ECOLOGICAL MODELLING,2021,456:12.
APA	Liu, Zhenhai.,Chen, Bin.,Wang, Shaoqiang.,Wang, Qinyi.,Chen, Jinghua.,...&Zhu, Tongtong.(2021).The impacts of vegetation on the soil surface freezing-thawing processes at permafrost southern edge simulated by an improved process-based ecosystem model.ECOLOGICAL MODELLING,456,12.
MLA	Liu, Zhenhai,et al."The impacts of vegetation on the soil surface freezing-thawing processes at permafrost southern edge simulated by an improved process-based ecosystem model".ECOLOGICAL MODELLING 456(2021):12.