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Respiration of downed logs in an old-growth temperate forest in north-eastern China
Wu, Jiabing1; Zhang, Xinjian1,3; Wang, Haolei2,3; Sun, Jinwei1,3; Guan, Dexin1
Corresponding AuthorWu, Jiabing(wujb@iae.ac.cn)
2010
Source PublicationSCANDINAVIAN JOURNAL OF FOREST RESEARCH
ISSN0282-7581
Volume25Issue:6Pages:500-506
AbstractCarbon dioxide (CO2) flux from coarse woody debris is an important source of carbon emission in forests with large amounts of coarse woody debris (CWD). Respiration from downed logs of Korean pine (Pinus koraiensis Sieb. et Zucc.) and Amur linden (Tilia amurensis Rupr.) and their response to meteorological factors were investigated using the closed static chamber-gas chromatography technique in an old-growth temperate forest in Changbai Mountain region, north-eastern China. On a yearly timescale, daily respiration rates (R log) varied over two orders of magnitude (8.7-252.3 mg Ckg-1), and were significantly correlated with wood water content and temperature (p0.05). The temperature-dependent empirical exponential models for each decay class explained more than 67% of the observed variations in R log. More decayed wood had a greater water content and pore space than less decayed wood, and these differences were probably responsible for the observed difference in respiration rate among decay classes. The annual carbon loss rate due to respiration was estimated to be 28.0 +/- 3.7 g Cm-2, which contributed only about 3% of total carbon loss from forest floor, but net carbon flux from downed logs accounted for up to 15% of net ecosystem exchange in this old temperate forest. Downed logs represent a small, but substantial carbon flux that is expected to increase over the next several decades in old-growth forest.
KeywordCarbon cycle coarse woody debris downed logs respiration
Funding OrganizationMajor State Basic Research Development Program ; National Natural Science Foundation of China
DOI10.1080/02827581.2010.524166
Indexed BySCI
Language英语
Funding ProjectMajor State Basic Research Development Program[2009 CB421101] ; National Natural Science Foundation of China[30970516]
WOS Research AreaForestry
WOS SubjectForestry
WOS IDWOS:000284634800002
PublisherTAYLOR & FRANCIS AS
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/126392
Collection中国科学院金属研究所
Corresponding AuthorWu, Jiabing
Affiliation1.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China
2.Chinese Acad Sci, Inst Genom, Beijing, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wu, Jiabing,Zhang, Xinjian,Wang, Haolei,et al. Respiration of downed logs in an old-growth temperate forest in north-eastern China[J]. SCANDINAVIAN JOURNAL OF FOREST RESEARCH,2010,25(6):500-506.
APA Wu, Jiabing,Zhang, Xinjian,Wang, Haolei,Sun, Jinwei,&Guan, Dexin.(2010).Respiration of downed logs in an old-growth temperate forest in north-eastern China.SCANDINAVIAN JOURNAL OF FOREST RESEARCH,25(6),500-506.
MLA Wu, Jiabing,et al."Respiration of downed logs in an old-growth temperate forest in north-eastern China".SCANDINAVIAN JOURNAL OF FOREST RESEARCH 25.6(2010):500-506.
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