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The impacts of vegetation on the soil surface freezing-thawing processes at permafrost southern edge simulated by an improved process-based ecosystem model
Liu, Zhenhai1; Chen, Bin2; Wang, Shaoqiang1,2,3; Wang, Qinyi1; Chen, Jinghua2,3; Shi, Weibo1; Wang, Xiaobo2,3; Liu, Yuanyuan2,3; Tu, Yongkai1; Huang, Mei2,3; Wang, Junbang2,3; Wang, Zhaosheng2,3; Li, Hui1; Zhu, Tongtong1
2021-09-15
Source PublicationECOLOGICAL MODELLING
ISSN0304-3800
Volume456Pages:12
Corresponding AuthorChen, Bin(chenbin@igsnrr.ac.cn) ; Wang, Shaoqiang(sqwang@igsnrr.ac.cn)
AbstractPermafrost 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.
KeywordFreeze-thaw Vegetation Model improvement Soil temperature
DOI10.1016/j.ecolmodel.2021.109663
WOS KeywordREMOTE-SENSING DATA ; CARBON-DIOXIDE ; PRODUCTIVITY SIMULATOR ; HINGGAN MOUNTAINS ; WATER FLUXES ; ACTIVE LAYER ; FOREST ; TEMPERATURE ; CLIMATE ; CANOPY
Indexed BySCI
Language英语
Funding ProjectScience and Technology Strategic Pilot of the Chinese Academy of Sci-ences[XDA20030203]
Funding OrganizationScience and Technology Strategic Pilot of the Chinese Academy of Sci-ences
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000685088600003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/164566
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, Bin; Wang, Shaoqiang
Affiliation1.China Univ Geosci, Sch Geog & Informat Engn, Key Lab Reg Ecol & Environm Change, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
Recommended Citation
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.
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