气候变化领域集成服务门户(CCPortal): Quantifying Regional Surface Energy Responses to Forest Structural Change in Nordic Fennoscandia

CCPortal

DOI	10.1029/2019JD032092
	Quantifying Regional Surface Energy Responses to Forest Structural Change in Nordic Fennoscandia
	Kumkar Y.; Astrup R.; Stordal F.; Bright R.M.
发表日期	2020
ISSN	2169897X
卷号	125 期号:15
英文摘要	In a climate model, surface energy and water fluxes of the vegetated ecosystem largely depend on important structural attributes like leaf area index and canopy height. For forests, management can greatly alter these attributes with resulting consequences for the surface albedo, surface roughness, and evapotranspiration. The sensitivity of surface energy and water budgets to alterations in forest structure is relatively unknown in boreal regions, particularly in Nordic Fennoscandia (Norway, Sweden, and Finland), where the forest management footprint is large. Here we perform offline simulations to quantify the sensitivity of surface heat and moisture fluxes to changes in forest composition and structure across daily, seasonal, and annual time scales. For the region on average, it is found that broadleaved deciduous forests cool the surface by 0.16 K annually and 0.3 K in the growing season owed to higher year-round albedo and lower Bowen ratio, yet in some locations the local cooling can be as much as 2.4 K and 3.0 K, respectively. Moreover, fully developed forests cool the surface by 0.04 K annually in our domain owed to higher evapotranspiration, reaching up to 0.4 K locally in some locations, whereas undeveloped forests warm annually by 0.14 K owed to much lower evapotranspiration reaching up to 0.8 K for some locations. If regional forests are ever to be managed for the local climate regulation services that they provide, our results are an important first step illuminating the potential adverse impacts or benefits across space and time. ©2020. The Authors.
英文关键词	forest management; land surface temperature; Nordic Fennoscandia; surface energy
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185862
作者单位	Norwegian Institute of Bioeconomy Research, Ås, Norway; Department of Geosciences, University of Oslo, Oslo, Norway
推荐引用方式 GB/T 7714	Kumkar Y.,Astrup R.,Stordal F.,et al. Quantifying Regional Surface Energy Responses to Forest Structural Change in Nordic Fennoscandia[J],2020,125(15).
APA	Kumkar Y.,Astrup R.,Stordal F.,&Bright R.M..(2020).Quantifying Regional Surface Energy Responses to Forest Structural Change in Nordic Fennoscandia.Journal of Geophysical Research: Atmospheres,125(15).
MLA	Kumkar Y.,et al."Quantifying Regional Surface Energy Responses to Forest Structural Change in Nordic Fennoscandia".Journal of Geophysical Research: Atmospheres 125.15(2020).