Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau
	Lu, Xuyang1,2 ; Yan, Yan1 ; Fan, Jihui2 ; Wang, Xiaodan1,2
刊名	ARCTIC ANTARCTIC AND ALPINE RESEARCH
	2012-05-01
卷号	44 期号:2 页码:188-196
关键词	Nitrification Denitrification Alpine Grassland the Tibetan Plateau
ISSN号	1523-0430
通讯作者	鄢燕
英文摘要	Nitrification and denitrification are key microbiological processes in the soil nitrogen cycle and are the main biological sources of N2O emissions from soils. In this work, we measured gross nitrification and denitrification rates of northern Tibet alpine grassland ecosystems during the growing season and evaluated the influence of soil environmental factors. The results showed that the soil inorganic nitrogen concentration and gross nitrification and denitrification rates of both alpine meadow and alpine steppe varied obviously across the season. During the growing season mean values of gross nitrification and denitrification rates of the alpine meadow site were 3.0 and 2.3 times greater than those of the alpine steppe site, respectively. Both gross nitrification and denitrification rates were not significantly correlated with the determined soil characteristics which include soil microbial biomass, inorganic nitrogen, and soil temperature, except that gross nitrification seemed associated with the microsite where soil moisture was higher. Our results demonstrate that soil moisture can explain partly the higher soil nitrogen (N) transformation rates in alpine meadow sites, but soil N transformation microorganisms and enzyme activities studies covering prolonged observation periods are still needed to clarify the key soil environmental factors that control gross nitrification and denitrification processes in alpine grassland ecosystems.
学科主题	土壤学
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Geography, Physical
研究领域[WOS]	Environmental Sciences & Ecology ; Physical Geography
关键词[WOS]	NET NITROGEN MINERALIZATION ; FLOODED SUBTROPICAL SOIL ; MICROBIAL BIOMASS-C ; N MINERALIZATION ; N2O EMISSIONS ; NITRIC-OXIDE ; FOREST SOILS ; TEMPERATURE ; RATES ; MOISTURE
收录类别	SCI
语种	英语
WOS记录号	WOS:000304723500004
公开日期	2012-12-11
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/4409]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, IMHE, Shenzha Alpine Steppe & Wetland Ecosyst Observ &, Shenzhen 853100, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xuyang,Yan, Yan,Fan, Jihui,et al. Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2012,44(2):188-196.
APA	Lu, Xuyang,Yan, Yan,Fan, Jihui,&Wang, Xiaodan.(2012).Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau.ARCTIC ANTARCTIC AND ALPINE RESEARCH,44(2),188-196.
MLA	Lu, Xuyang,et al."Gross Nitrification and Denitrification in Alpine Grassland Ecosystems on the Tibetan Plateau".ARCTIC ANTARCTIC AND ALPINE RESEARCH 44.2(2012):188-196.