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DOI | 10.1029/2018MS001531 |
Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model | |
Druel, Arsene1,2,3; Ciais, Philippe2; Krinner, Gerhard1; Peylin, Philippe2 | |
发表日期 | 2019 |
EISSN | 1942-2466 |
卷号 | 11期号:7页码:2020-2035 |
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. |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/100954 |
作者单位 | 1.Univ Grenoble Alpes, CNRS, IGE, Grenoble, France; 2.CEA, CNRS, UVSQ CE Orme Merisiers, Lab Sci Climat & Environm, Gif Sur Yvette, France; 3.Univ Toulouse, CNRM, Meteo France, CNRS, Toulouse, France |
推荐引用方式 GB/T 7714 | Druel, Arsene,Ciais, Philippe,Krinner, Gerhard,et al. Modeling the Vegetation Dynamics of Northern Shrubs and Mosses in the ORCHIDEE Land Surface Model[J],2019,11(7):2020-2035. |
APA | Druel, Arsene,Ciais, Philippe,Krinner, Gerhard,&Peylin, Philippe.(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),2020-2035. |
MLA | Druel, Arsene,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):2020-2035. |
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