Activity maintenance of the excised branches and a case study of NO2 exchange between the atmosphere and P. nigra branches

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Activity maintenance of the excised branches and a case study of NO2 exchange between the atmosphere and P. nigra branches
	Chen, Chun ; Wang, Yuzheng ; Zhang, Yuanyuan ; Lun, Xiaoxiu ; Liu, Chengtang ; Mu, Yujing ; Zhang, Chenglong ; Liu, Pengfei ; Xue, Chaoyang ; Song, Min
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2019-06
卷号	80 页码:316-326
关键词	Excised branches Activity maintenance NO2 exchange flux Hydroponics Dynamic chamber
ISSN号	1001-0742
英文摘要	The efficient maintenance of the activity of excised branches is the powerful guarantee to accurately determine gas exchange flux between the detached branches of tall trees and the atmosphere. In this study, the net photosynthetic rate (NPR) of the excised branches and branches in situ were measured simultaneously by using two photosynthetic instruments to characterize the activity of the excised branches of Phyllostachys nigra. The ratio of normalized NPR of excised branches to NPR in situ was used to assess the photosynthetic activity of detached branches. Based on photosynthetic activity, an optimal hydroponics protocol for maintaining activity of excised P. nigra branches was presented: 1/8 times the concentration of Camborg B5 vitamin mixture with pH = 6. Under the best cultivation protocol, photosynthetic activity of excised P. nigra branches could be maintained more than 90% within 6 hr in the light intensity range of 200-2000 mu mol/(m(2)-sec) and temperature range of 13.4-28.7 degrees C. The nitrogen dioxide (NO2) flux differences between in situ and in vitro branches and the atmosphere were compared using double dynamic chambers. Based on the maintenance method of excised branches, the NO2 exchange flux between the excised P. nigra branches and the atmosphere (from -1.01 to -2.72 nmol/(m(2)-sec) was basically consistent with between the branches in situ and the atmosphere (from -1.12 to -3.16 nmol/(m(2) sec)) within 6 hr. Therefore, this study provided a feasible protocol for in vitro measurement of gas exchange between tall trees and the atmosphere for a period of time. (C) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43128]
专题	生态环境研究中心_大气环境科学实验室
作者单位	1.Beijing Forest Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Chen, Chun,Wang, Yuzheng,Zhang, Yuanyuan,et al. Activity maintenance of the excised branches and a case study of NO2 exchange between the atmosphere and P. nigra branches[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2019,80:316-326.
APA	Chen, Chun.,Wang, Yuzheng.,Zhang, Yuanyuan.,Lun, Xiaoxiu.,Liu, Chengtang.,...&Liu, Junfeng.(2019).Activity maintenance of the excised branches and a case study of NO2 exchange between the atmosphere and P. nigra branches.JOURNAL OF ENVIRONMENTAL SCIENCES,80,316-326.
MLA	Chen, Chun,et al."Activity maintenance of the excised branches and a case study of NO2 exchange between the atmosphere and P. nigra branches".JOURNAL OF ENVIRONMENTAL SCIENCES 80(2019):316-326.