Short-Term vs. Long-Term Effects of Understory Removal on Nitrogen and Mobile Carbohydrates in Overstory Trees

doi:10.3390/f7030067

	Short-Term vs. Long-Term Effects of Understory Removal on Nitrogen and Mobile Carbohydrates in Overstory Trees
	Chen, Huai 1; Du, Zhong 1,6; Cai, Xiaohu 4; Bao, Weikai 1; Pan, Hongli 4; Wang, Xue 3; Zhao, Qingxia 1; Zhu, Wanze 5; Liu, Xingliang 4; Jiang, Yong 3
刊名	FORESTS
	2016-03-01
卷号	7 期号:3
关键词	Starch Mobile Carbohydrates Plant-plant Interactions Soluble Sugars Carbon Understory-overstory Interactions. Tree-shrub Interactions Competition Nitrogen
ISSN号	1999-4907
DOI	10.3390/f7030067
英文摘要	Understory management in forest ecosystems has been applied to improve the wood production for hundreds of years worldwide. The carbon-physiological mechanisms underlying these positive effects of understory management on the growth of overstory trees have received less attention. We studied the non-structural carbohydrate (NSC) and total nitrogen (N) concentrations in tissues (needles, stem sapwood, and fine roots) of three tree species (two evergreen and one deciduous species) grown in the presence or absence (understory cut) of understory shrubs in plantations in southwestern China, to test whether understories affect the carbon and nitrogen status in the overstory trees. The concentrations of N, NSC (= soluble sugars + starch) in overstory trees varied significantly with understory treatments during the dry season rather than the wet season. Trees grown without understory shrubs had higher levels of N and NSC compared to trees grown with understories. The present study provides insight to explain the functional mechanisms for understory effects on growth of overstory trees, and indicates that the nitrogen and carbon status in overstory trees may be more strongly negatively affected by understory in stressful conditions rather than in optimal growth conditions. Moreover, the present study provides ecophysiology-based knowledge for dealing with understory vegetation management in forest ecosystems.
WOS研究方向	Forestry
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000373700800015
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122584]
专题	中国科学院沈阳应用生态研究所
通讯作者	Li, Mai-He
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat &, Biodivers Conservat Key Lab Sichuan Prov, Chengdu 610041, Peoples R China 2.Swiss Fed Res Inst WSL, Ecophysiol Grp, Forest Dynam, CH-8903 Birmensdorf, Switzerland 3.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110164, Liaoning, Peoples R China 4.Sichuan Acad Forestry, Inst Forest Ecol, Chengdu 610081, Peoples R China 5.Chinese Acad Sci, Inst Mt Hazard & Environm, Chengdu 610041, Peoples R China 6.Southwest Univ Nationalities, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Chen, Huai,Du, Zhong,Cai, Xiaohu,et al. Short-Term vs. Long-Term Effects of Understory Removal on Nitrogen and Mobile Carbohydrates in Overstory Trees[J]. FORESTS,2016,7(3).
APA	Chen, Huai.,Du, Zhong.,Cai, Xiaohu.,Bao, Weikai.,Pan, Hongli.,...&Li, Mai-He.(2016).Short-Term vs. Long-Term Effects of Understory Removal on Nitrogen and Mobile Carbohydrates in Overstory Trees.FORESTS,7(3).
MLA	Chen, Huai,et al."Short-Term vs. Long-Term Effects of Understory Removal on Nitrogen and Mobile Carbohydrates in Overstory Trees".FORESTS 7.3(2016).