Soil Inorganic Nitrogen and Microbial Biomass Carbon and Nitrogen Under Pine Plantations in Zhanggutai Sandy Soil

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	Soil Inorganic Nitrogen and Microbial Biomass Carbon and Nitrogen Under Pine Plantations in Zhanggutai Sandy Soil
	Yu, ZY ; Chen, FS ; Zeng, DH ; Zhao, Q ; Chen, GS
刊名	PEDOSPHERE
	2008
卷号	18 期号:6 页码:775-784
关键词	ecosystem management Horqin sandy land soil nitrogen availability Pinus densiflora Pinus sylvestris var. mongolica
ISSN号	1002-0160
通讯作者	Yu, ZY, Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang 110016, Peoples R China
中文摘要	The dynamics of soil inorganic nitrogen (NH4+-N and NO3--N) and microbial biomass carbon (C-mic) and nitrogen (N-mic) under 30-year-old fenced Pinus sylvestris L. var. mongolica, Litvin (SF), unfenced P. sylvestris L. var. mongolica Litvin (SUF), and unfenced Pinus densiflora Siebold et Zucc. (DUF) plantations in the Zhanggutai sandy soil of China were studied during Apr. to Oct. 2004 by the in situ closed-top core incubation method. All mentioned C and N indices in each stand type fluctuated over time. The ranges of inorganic N, C-mic, and N-mic contents in the three stand types were 0.7-2.6, 40.0-128.9, and 5.4-15.2 mu g g(-1), respectively. The average contents of soil NH4+-N and C-mic under the three 30-year-old pine plantations were not different. However, soil NO3--N and total inorganic N contents decreased in the order of SUF >= SF >= DUF, the N-mic content was in the order of SF = SUF > DUF, and the C-mic:N-mic ratio was3 in the order of SUF = DUF > SF. Seasonal variations were observed in soil inorganic N, microbial biomass, and plant growth. These seasonal variations had certain correlations with microbe and plant N use in the soil, and their competition for NH4+-N was mostly regulated by soil N availability. The influence of tree species on inorganic N and N-mic were mainly because of differences in litter quality. Lack of grazing decreased the C-mic:N-mic ratio owing to decreased carbon output and increased the ability of soil to supply N. The soil N supply under the P. sylvestris var. mongolica plantation was lower than under the P. densiflora plantation.
学科主题	Soil Science
收录类别	SCI
资助信息	National Key Basic Research Program (973 Program) of China [2007CB106803]; Chinese Academy of Sciences [KZCX1-YW-08-02]; Key Laboratory of Terrestrial Ecological Process and Regional Ecological Safety in Liaoning Province, China [06ZDS212SS]
语种	英语
WOS记录号	WOS:000261548700011
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54303]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Yu, ZY,Chen, FS,Zeng, DH,et al. Soil Inorganic Nitrogen and Microbial Biomass Carbon and Nitrogen Under Pine Plantations in Zhanggutai Sandy Soil[J]. PEDOSPHERE,2008,18(6):775-784.
APA	Yu, ZY,Chen, FS,Zeng, DH,Zhao, Q,&Chen, GS.(2008).Soil Inorganic Nitrogen and Microbial Biomass Carbon and Nitrogen Under Pine Plantations in Zhanggutai Sandy Soil.PEDOSPHERE,18(6),775-784.
MLA	Yu, ZY,et al."Soil Inorganic Nitrogen and Microbial Biomass Carbon and Nitrogen Under Pine Plantations in Zhanggutai Sandy Soil".PEDOSPHERE 18.6(2008):775-784.