文献类型：会议论文

英文题名：Effects of forest type, stand age, and altitude on soil respiration in subtropical forests of China

作者：Wang, Bing[1] Jiang, Yan[1,3] Wei, Xiaohua[2] Zhao, Guangdong[1] Guo, Hao[1] Bai, Xiulan[1]

通信作者：Jiang, Y[1]

机构：[1]Chinese Acad Forestry, State Forestry Adm, Res Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol Enivornm, Beijing 100091, Peoples R China;[2]Univ British Columbia Okanagan, Dept Earth & Environm Sci, Kelowna, BC V1V 1V7, Canada;[3]Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China

会议论文集：14th Scientific Conference of the International-Boreal-Forest-Research- Association (IBFRA)

会议日期：2008

会议地点：PEOPLES R CHINA

语种：英文

外文关键词：Bamboo; Chinese fir; soil-surface CO2 flux; soil temperature; soil water content

年份：2011

摘要：An automated chamber system was used to study how soil respiration (R-S) differed with stand age (SA), altitude (AL), and forest type (FT), in subtropical China. From 2006 to 2008, measurements of soil-surface CO2 efflux and associated environmental factors were made in an evergreen broad-leaved forest (EB), and five aged Chinese fir [Cunninghamia lanceolata Hook.] plantations (CF), and three altitudinal Moso bamboo [Phyllostachys pubescens Mazel ex J. Houz.] plantations (MB), in Dagangshan mountain range, Jiangxi Province. Multivariate analysis of covariance with soil temperature (T) and soil water content (SWC) as the covariates showed that FT and AL as the independent factors had a significant effect on R-S (P<0.01, P<0.05, respectively). The R-S in the CF differed significantly from EB and MB (P<0.001), but not between EB and MB. The R-S was positively correlated with T, and responded to changes in SWC at higher Ts. The correlation between R-S and SWC was improved when the R-S was normalized to 10 degrees C. Annual mean R-S differed significantly with SA and were ranked in the order (from high to low) of 21-25, 26-35, 11-20, >36, and 1-10 years. The conclusion of this study is that T, SWC, AL, FT, and SA all have significant effects on R-S in subtropical China.