气候变化领域集成服务门户(CCPortal): Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model

CCPortal

DOI	10.1029/2018MS001531
	Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model
	Druel A.; Ciais P.; Krinner G.; Peylin P.
发表日期	2019
ISSN	19422466
起始页码	2020
结束页码	2035
卷号	11 期号:7
英文摘要	Parameterizations of plant competition processes involving shrubs, mosses, grasses, and trees were introduced with the recently implemented shrubs and mosses plant functional types in the ORCHIDEE dynamic global vegetation model in order to improve the representation of high latitude vegetation dynamics. Competition is based on light capture for growth, net primary productivity, and survival to cold-induced mortality during winter. Trees are assumed to outcompete shrubs and grasses for light, and shrubs outcompete grasses. Shrubs are modeled to have a higher survival than trees to extremely cold winters because of thermic protection by snow. The fractional coverage of each plant type is based on their respective net primary productivity and winter mortality of trees and shrubs. Gridded simulations were carried out for the historical period and the 21st century following the RCP4.5 and 8.5 scenarios. We evaluate the simulated present-day vegetation with an observation-based distribution map and literature data of boreal shrubs. The simulation produces a realistic present-day boreal vegetation distribution, with shrubs, mosses north of trees and grasses. Nevertheless, the model underestimated local shrub expansion compared to observations from selected sites in the Arctic during the last 30 years suggesting missing processes (nutrients and microscale effects). The RCP4.5 and RCP8.5 projections show a substantial decrease of bare soil, an increase in tree and moss cover and an increase of shrub net primary productivity. Finally, the impact of new vegetation types and associated processes is discussed in the context of climate feedbacks. ©2019. The Authors.
英文关键词	Arctic greening; boreal; competition; dynamical vegetation; land surface; modeling
语种	英语
scopus关键词	Competition; Ecosystems; Forestry; Models; Photosynthesis; Phytoplankton; Surface measurement; Arctic greening; boreal; Land surface; Land surface modeling; Net primary productivity; Plant functional type; Vegetation distribution; Vegetation dynamics; Vegetation; Boreal Kingdom; competition (ecology); functional role; grass; growth rate; land surface; mortality; moss; net primary production; parameterization; range expansion; shrub; survival; twenty first century; vegetation dynamics; vegetation type; Bryophyta; Poaceae
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156968
作者单位	CNRS, Université Grenoble Alpes, Institut des Géosciences de l'Environnement (IGE), Grenoble, France; Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ CE Orme des Merisiers, Gif sur Yvette, France; Now at CNRM-Université de Toulouse, Météo-France, CNRS, Toulouse, France
推荐引用方式 GB/T 7714	Druel A.,Ciais P.,Krinner G.,et al. Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model[J],2019,11(7).
APA	Druel A.,Ciais P.,Krinner G.,&Peylin P..(2019).Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model.Journal of Advances in Modeling Earth Systems,11(7).
MLA	Druel A.,et al."Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model".Journal of Advances in Modeling Earth Systems 11.7(2019).