气候变化领域集成服务门户(CCPortal): Simulating interactions between topography, permafrost, and vegetation in Siberian larch forest

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DOI	10.1088/1748-9326/ab9be4
	Simulating interactions between topography, permafrost, and vegetation in Siberian larch forest
	Sato H.; Kobayashi H.; Beer C.; Fedorov A.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	In eastern Siberia, topography controls the abundance of the larch forest via both drought and flooding stresses. For the reconstruction of these topographical effects, we modified a dynamic vegetation model to represent soil water relocation owing to within-grid heterogeneity of elevation, over-wet-kill of trees, and air temperature differences within-grid. After calibration, the model reasonably reconstructed the geographical distributions of observation-based-estimates of fundamental properties of plant productivity and thermo-hydrology. Thus, the model appropriately responded to environmental gradients in eastern Siberia. The modified model also partially reconstructed the topography control on tree abundance and thermo-hydrology status in eastern Siberia, although its geographical distribution was not always good. In the modified model, soil water redistribution increased the risk of over-wet-kill in lower elevation classes, whereas it reduced the risk of over-wet-kill for larch trees in higher elevation classes. We demonstrated that without considering the latter effect, forest collapse due to over-wet stress would happen throughout eastern Siberia under a forecasted climatic condition during the 21st century, which will deliver a much moister environment throughout eastern Siberia. Therefore, modeling the over-wet-kill of trees without considering topographical heterogeneity would result in the overestimation of forest collapse caused by the over-wet-kill of trees under an expected climate trend in eastern Siberia. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Permafrost; Siberian larch; TOPMODEL
语种	英语
scopus关键词	Geographical distribution; Hydrology; Soil moisture; Topography; Vegetation; Air temperature; Climatic conditions; Dynamic vegetation model; Environmental gradient; Fundamental properties; Plant productivity; Topographical effects; Topography controls; Forestry; air temperature; climate effect; drought stress; flooding; forest ecosystem; geographical distribution; hydrological regime; permafrost; soil water; topography; Siberia; Larix
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153752
作者单位	Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan; Stockholm University, Stockholm, Sweden; Melnikov Permafrost Institute, Yakutsk, Russian Federation; North-Eastern Federal University, Yakutsk, Russian Federation
推荐引用方式 GB/T 7714	Sato H.,Kobayashi H.,Beer C.,et al. Simulating interactions between topography, permafrost, and vegetation in Siberian larch forest[J],2020,15(9).
APA	Sato H.,Kobayashi H.,Beer C.,&Fedorov A..(2020).Simulating interactions between topography, permafrost, and vegetation in Siberian larch forest.Environmental Research Letters,15(9).
MLA	Sato H.,et al."Simulating interactions between topography, permafrost, and vegetation in Siberian larch forest".Environmental Research Letters 15.9(2020).