干旱区生态环境知识资源中心(Arid): Decomposition of Mongolian pine litter in the presence of understory species in semi-arid northeast China

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	Decomposition of Mongolian pine litter in the presence of understory species in semi-arid northeast China
	Mao Bing; Mao Rong; Hu Yalin; Huang Yue; Zeng Dehui
来源期刊	Journal of Forestry Research
ISSN	1007-662X
出版年	2016
卷号	27 期号:2 页码:329-337
英文摘要	The effects of understory plant litter on dominant tree litter decomposition are not well documented especially in semi-arid forests. In this study, we used a microcosm experiment to examine the effects of two understory species (Artemisia scoparia and Setaria viridis) litter on the mass loss and N release of Mongolian pine (Pinus sylvestris var. mongolica) litter in Keerqin Sandy Lands, northeast China, and identified the influencing mechanism from the chemical quality of decomposing litter. Four litter combinations were set up: one monoculture of Mongolian pine and three mixtures of Mongolian pine and one or two understory species in equal mass proportions of each species. Total C, total N, lignin, cellulose and polyphenol concentrations, and mass loss of pine litter were analyzed at days 84 and 182 of incubation. The chemistry of pine litter not only changed with the stages of decomposition, but was also strongly influenced by the presence of understory species during decomposition. Both understory species promoted mass loss of pine litter at 84 days, while only the simultaneous presence of two understory species promoted mass loss of pine litter at 182 days. Mass loss of pine litter was negatively correlated with initial ratios of C/N, lignin/N and polyphenol/N of litter combinations during the entire incubation period; at 182 days it was negatively correlated with polyphenol concentration and ratios of C/N and polyphenol/N of litter combinations at 84 days of incubation. Nitrogen release of pine litter was promoted in the presence of understory species. Nitrogen release at 84 days was negatively correlated with initial N concentration; at 182 days it was negatively correlated with initial polyphenol concentration of litter combinations and positively correlated with lignin concentration of litter combinations at 84 days of incubation. Our results suggest that the presence of understory species causes substantial changes in chemical components of pine litter that can exert strong influences on subsequent decomposition of pine litter.
英文关键词	Litter chemistry Litter mixture Mass loss Nitrogen release Understory species
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:5666325
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335623
作者单位	Mao Bing, Institute of Applied Ecology, Chinese Academy of Sciences, State Key Laboratory of Forest and Soil Ecology, Shenyang, Liaoning 110164, China.; Hu Yalin, Institute of Applied Ecology, Chinese Academy of Sciences, State Key Laboratory of Forest and Soil Ecology, Shenyang, Liaoning 110164, China.; Huang Yue, Institute of Applied Ecology, Chinese Academy of Sciences, State Key Laboratory of Forest and Soil Ecology, Shenyang, Liaoning 110164, China.; Zeng Dehui, Institute of Applied Ecology, Chinese Academy of Sciences, State Key Laboratory of Forest and Soil Ecology, Shenyang, Liaoning 110164, China.; Mao Rong, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130012, China.
推荐引用方式 GB/T 7714	Mao Bing,Mao Rong,Hu Yalin,et al. Decomposition of Mongolian pine litter in the presence of understory species in semi-arid northeast China[J],2016,27(2):329-337.
APA	Mao Bing,Mao Rong,Hu Yalin,Huang Yue,&Zeng Dehui.(2016).Decomposition of Mongolian pine litter in the presence of understory species in semi-arid northeast China.Journal of Forestry Research,27(2),329-337.
MLA	Mao Bing,et al."Decomposition of Mongolian pine litter in the presence of understory species in semi-arid northeast China".Journal of Forestry Research 27.2(2016):329-337.