张玉珍等:Surface radiative forcing of forest disturbances over northeastern China
被阅读 1951 次
2014-04-04

Surface radiative forcing of forest disturbances over northeastern China
作者:Zhang, YZ (Zhang, Yuzhen)[ 1 ] ; Liang, SL (Liang, Shunlin)[ 2,1 ]
ENVIRONMENTAL RESEARCH LETTERS
卷: 9  期: 2
文献号: 024002
DOI: 10.1088/1748-9326/9/2/024002
出版年: FEB 2014

摘要
Forests provide important climate forcing through biogeochemical and biogeophysical processes. In this study, we investigated the climatic effects of forest disturbances due to changes in forest biomass and surface albedo in terms of radiative forcing over northeastern China. Four types of forest disturbances were considered: fires, insect damage, logging, and afforestation and reforestation. The mechanisms of the influence of forest disturbances on climate were different. 'Instantaneous' net radiative forcings caused by fires, insect damage, logging, and afforestation and reforestation were estimated at 0.53 +/- 0.08 W m(-2), 1.09 +/- 0.14 W m(-2), 2.23 +/- 0.27 W m(-2), and 0.14 +/- 0.04 W m(-2), respectively. Trajectories of CO2-driven radiative forcing, albedo-driven radiative forcing, and net forcing were different with time for each type of disturbance. Over a decade, the estimated net forcings were 2.24 +/- 0.11 W m(-2), 0.20 +/- 0.31 W m(-2), 1.06 +/- 0.41 W m(-2), and 0.47 +/- 0.07 W m(-2), respectively. These estimated radiative forcings from satellite observations provided evidence for the mechanisms of the influences of forest disturbances on climate.

通讯作者地址: Zhang, YZ (通讯作者)
Beijing Normal Univ, State Key Lab Remote Sensing Sci, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China.
地址:
[ 1 ] Beijing Normal Univ, State Key Lab Remote Sensing Sci, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
[ 2 ] Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA