Respiration of downed logs in an old-growth temperate forest in north-eastern China

doi:10.1080/02827581.2010.524166

	Respiration of downed logs in an old-growth temperate forest in north-eastern China
	Wu, Jiabing 2; Zhang, Xinjian 2,3; Wang, Haolei 1,3; Sun, Jinwei 2,3; Guan, Dexin 2
刊名	SCANDINAVIAN JOURNAL OF FOREST RESEARCH
	2010
卷号	25 期号:6 页码:500-506
关键词	Carbon Cycle Coarse Woody Debris Downed Logs Respiration
ISSN号	0282-7581
DOI	10.1080/02827581.2010.524166
英文摘要	Carbon 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.
WOS研究方向	Forestry
语种	英语
出版者	TAYLOR & FRANCIS AS
WOS记录号	WOS:000284634800002
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121565]
专题	中国科学院沈阳应用生态研究所
通讯作者	Wu, Jiabing
作者单位	1.Chinese Acad Sci, Inst Genom, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
推荐引用方式 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.