气候变化领域集成服务门户(CCPortal): Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau

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DOI	10.1007/s13157-017-0876-6
	Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau
	Lei Tianzhu; Si Guicai; Wang Jian; Zhang Gengxin
通讯作者	Zhang, GX (通讯作者)
发表日期	2017
ISSN	0277-5212
EISSN	1943-6246
起始页码	401
结束页码	412
卷号	37 期号:3
英文摘要	Microbial communities, enzyme activities and soil physiochemical characteristics were investigated in alpine wetlands with altitude changes in the Nyainqentanglha Mountains on the Tibetan plateau. The results showed that with an increasing altitude gradient, soil physicochemical properties such as total organic carbon (TOC), total nitrogen (TN), water-soluble organic carbon (WSOC), water-soluble organic nitrogen (WSON) and pH decreased coincident with a decrease in mean annual temperature (MAT). Bacteria biomass, fungal biomass and actinobacterial biomass all decreased with an increase in altitude gradient. The ratio of Gram-positive bacteria to Gram-negative bacteria and the ratio of cyclopropyl to precursor fatty acids all indicate that the level of environmental harshness intensified with an increase in altitude. We also found that soil enzyme activities such as phenol oxidase, peroxidase, L-asparaginase, protease, urease and alkaline phosphatase all consistently decreased with an increase in altitude gradient. Additionally, the activities of peroxidase, protease and alkaline phosphatase declined, mainly due to a reduction in enzyme activities with temperature rather than the reduction of associated microbial biomass. Statistical analysis showed that both microbial biomass and enzyme activities were significantly influenced by mean annual temperature, suggesting that temperature is a key factor that affects microbial communities and soil enzyme activities in alpine wetlands on the Tibetan Plateau and indicating that climate warming may significantly impact these areas.
关键词	FATTY-ACID PROFILES BACTERIAL COMMUNITIES SPATIAL-DISTRIBUTION ORGANIC-CARBON SOIL BIOMASS DIVERSITY GRADIENT FOREST BIOGEOGRAPHY
英文关键词	Microbial community; Enzyme activity; Altitude gradient; Alpine wetlands
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:000403573000001
来源期刊	WETLANDS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258909
推荐引用方式 GB/T 7714	Lei Tianzhu,Si Guicai,Wang Jian,et al. Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2017,37(3).
APA	Lei Tianzhu,Si Guicai,Wang Jian,&Zhang Gengxin.(2017).Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau.WETLANDS,37(3).
MLA	Lei Tianzhu,et al."Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau".WETLANDS 37.3(2017).