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学科主题: 生物科学::普通生物学
题名: Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau
作者: Lei, TZ (Lei Tianzhu)1; Si, GC (Si Guicai)1; Wang, J (Wang Jian)2; Zhang, GX (Zhang Gengxin)3
通讯作者: Zhang, GX
关键词: FATTY-ACID PROFILES ; BACTERIAL COMMUNITIES ; SPATIAL-DISTRIBUTION ; ORGANIC-CARBON ; SOIL ; BIOMASS ; DIVERSITY ; GRADIENT ; FOREST ; BIOGEOGRAPHY
刊名: WETLANDS
发表日期: 2017
DOI: 10.1007/s13157-017-0876-6
卷: 37, 期:3, 页:401-412
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Ecology; Environmental Sciences ; Environmental Sciences & Ecology
研究领域[WOS]: Environmental Sciences & Ecology
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.
语种: 英语
WOS记录号: WOS:000403573000001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8203
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Inst Geol & Geophys, Lanzhou 730000, Peoples R China.
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China.
3.Chinese Acad Sci, Inst Tibetan Plateau, Beijing 100049, Peoples R China.

Recommended Citation:
Lei, TZ ,Si, GC ,Wang, J ,et al. Microbial Communities and Associated Enzyme Activities in Alpine Wetlands with Increasing Altitude on the Tibetan Plateau[J]. WETLANDS,2017,37(3):401-412.
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文件名: V.37(3) 401-412 2017.pdf
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