Needle dark respiration in relation to within-crown position in Scots pine trees grown in long-term elevation of CO2 concentration and temperature

	Needle dark respiration in relation to within-crown position in Scots pine trees grown in long-term elevation of CO2 concentration and temperature
	Zha, TS ; Wang, KY ; Ryyppo, A ; Kellomaki, S
刊名	NEW PHYTOLOGIST
	2002
卷号	156 期号:1 页码:33_41
关键词	dark respiration within-crown position Pinus sylvestris (Scots pine) elevated CO2 concentration and elevated temperature SLA nitrogen concentration
ISSN号	0028-646X
通讯作者	Zha, TS, Univ Joensuu, Fac Forestry, POB 111, FIN-80101 Joensuu, Finland.
中文摘要	The spatial distribution of leaf respiration in relation to specific needle area (SLA) and nitrogen concentration was studied in Scots pines (Pinus sylvestris) grown in environment-controlled chambers for 4 yr under ambient conditions (CON), elevated CO2 concentration (ambient + 350 mumol; EC), elevated temperature (ambient + 2-3degreesC; ET) or a combination of EC and ET (EC + ET). Dark respiration rates within the crown were measured on attached needles using a portable photosynthesis analyzer. Respiration rates decreased with increasing within-crown depth and were linearly related to within-crown positions, regardless of the treatments. The needles in the different depths in the crown had relatively similar responses of respiration to EC, ET and EC + ET. Respiration rates were reduced by EC relative to CON at any given within-crown position, but were increased by ET and EC + ET. Respiration positively correlated with N concentration and negatively with SLA on an area basis. It is assumed that respiratory acclimation to a change in light environment can occur irrespective of treatment. We suggested that SLA is a key determinant of respiration.
学科主题	Plant Sciences
收录类别	SCI
语种	英语
公开日期	2011-07-08
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/21332]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Zha, TS,Wang, KY,Ryyppo, A,et al. Needle dark respiration in relation to within-crown position in Scots pine trees grown in long-term elevation of CO2 concentration and temperature[J]. NEW PHYTOLOGIST,2002,156(1):33_41.
APA	Zha, TS,Wang, KY,Ryyppo, A,&Kellomaki, S.(2002).Needle dark respiration in relation to within-crown position in Scots pine trees grown in long-term elevation of CO2 concentration and temperature.NEW PHYTOLOGIST,156(1),33_41.
MLA	Zha, TS,et al."Needle dark respiration in relation to within-crown position in Scots pine trees grown in long-term elevation of CO2 concentration and temperature".NEW PHYTOLOGIST 156.1(2002):33_41.