降水与氮沉降变化对草地关键氮过程的影响研究进展

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Abstract

Studing the effects of changing precipitation regimes and increasing nitrogen deposition on the key processes of nitrogen cycle in grassland ecosystem and exploring the additive effects and the adaptation characteristics of them responding to the future global climate changes were helpful to provide scientific basis for regulating nitrogen transformation processes, improving grassland nitrogen use efficiency and reducing the negative ecological effects. In this paper, different effects induced by water and nitrogen additions and their co-effects on plant and soil nitrogen pools were reviewed. Meanwhile, the possible drive mechanisms related to the changes in microorganisms and enzymes under these conditions were analyzed. On this basis, the uncertainties about the effects of changing water and nitrogen on the key processes of nitrogen cycle in grassland ecosystem as well as the main problems existing in current related studies were also discussed.

Key words： precipitation nitrogen deposition coupling changes nitrogen cycle key processes

Received: 24 September 2015

PACS:

X171

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	Articles by authors
	YAN Zhong-qing
	QI Yu-chun
	DONG Yun-she
	PENG Qin
	GUO Shu-fang
	HE Yun-long
	WANG Li-qin
	LI Zhao-lin

Cite this article:

YAN Zhong-qing,QI Yu-chun,DONG Yun-she等. Effects of changing precipitation regime and increasing nitrogen deposition on key processes of nitrogen cycle in grassland ecosystem.[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(4): 1189-1197.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2016/V36/I4/1189

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