Photosynthetic responses of two pleurocarpous mosses to low-level nitrogen addition: a study in an old-growth fir forest

	Photosynthetic responses of two pleurocarpous mosses to low-level nitrogen addition: a study in an old-growth fir forest
	Liu, Xin; Wang, Zhe; Bao, Weikai; Li, Xiao-Ming
刊名	JOURNAL OF BRYOLOGY
	2015
卷号	37 期号:1 页码:15-22
关键词	DEPOSITION SPHAGNUM LEAF BRYOPHYTES FERTILIZATION PRODUCTIVITY FLUORESCENCE GRASSLANDS LIMITATION SPECTRUM
通讯作者	Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, 9 Sect 4,Renmin South Ave,POB 416, Chengdu 610041, Peoples R China.
产权排序	1
合作状况	国内
英文摘要	We examined photosynthetic responses of two dominant pleurocarpous mosses, Actinothuidium hookeri (Mitt.) Broth. and Hylocomium splendens (Hedw.) Schimp. to low-level nitrogen (N) addition. The study was conducted in an old-growth fir forest on the eastern Tibetan Plateau. The added N, 1 g N/m(2), was mainly absorbed by the new-growth. The concentrations of chlorophyll a and b both increased 8 days after N addition. The quantum yield of Photosystem II (WPSII) also increased. However, no significant changes were found in terms of gas exchange parameters. The mass-based CO2 assimilation rate, chlorophyll a content, and chlorophyll a/b ratio (which is related to antenna size of the photosystem), of H. splendens were all higher than those of A. hookeri. Shoot mass per area (SMA) of H. splendens was lower than that of A. hookeri. We conclude that the photosynthetic rate was less sensitive to low-level N addition than chlorophyll contents and chlorophyll fluorescence parameters, suggesting other limiting factors in the photosynthetic process. Additionally, the faster growing H. splendens has a higher photosynthetic capacity than A. hookeri, allocating fewer resources to structural tissue.
学科主题	Plant Sciences
类目[WOS]	Plant Sciences
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/27535]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Liu, Xin,Wang, Zhe,Bao, Weikai,et al. Photosynthetic responses of two pleurocarpous mosses to low-level nitrogen addition: a study in an old-growth fir forest[J]. JOURNAL OF BRYOLOGY,2015,37(1):15-22.
APA	Liu, Xin,Wang, Zhe,Bao, Weikai,&Li, Xiao-Ming.(2015).Photosynthetic responses of two pleurocarpous mosses to low-level nitrogen addition: a study in an old-growth fir forest.JOURNAL OF BRYOLOGY,37(1),15-22.
MLA	Liu, Xin,et al."Photosynthetic responses of two pleurocarpous mosses to low-level nitrogen addition: a study in an old-growth fir forest".JOURNAL OF BRYOLOGY 37.1(2015):15-22.