Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.catena.2016.03.002 |
No synergistic effects of water and nitrogen addition on soil microbial communities and soil respiration in a temperate desert | |
Su, Yan Gui1; Huang, Gang2; Lin, Ya Jun1,3; Zhang, Yuan Ming1 | |
通讯作者 | Zhang, Yuan Ming |
来源期刊 | CATENA
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ISSN | 0341-8162 |
EISSN | 1872-6887 |
出版年 | 2016 |
卷号 | 142页码:126-133 |
英文摘要 | Soil microbial communities play an important role in regulating land atmosphere CO2 exchange in terrestrial ecosystems. However, their responses to climate change are unclear. We explored the effects of water and nitrogen addition and their interaction on soil microbes and the resulting impacts on soil carbon emissions in the Gurbantunggut Desert, northwestern China. A manipulative 30% increase in precipitation and 5 gN m(-2) year(-1) deposition alone and in combination was applied across three years from 2011 to 2013. Water addition significantly increased microbial biomass and respiration, metabolic quotient, and the utilization of carbohydrates, carboxylic acids and amino acids. Water addition did not change the microbial community composition. Nitrogen addition only significantly increased soil bacterial PLFAs, while exerting no significant impacts on soil fungal PLFAs, microbial respiration and soil respiration. Moreover, nitrogen addition had no significant impacts on microbial community composition. Water and nitrogen addition in combination did not generate synergistic effects on microbial communities and soil respiration. Across treatments in three years, soil respiration and microbial respiration were positively correlated with microbial total PLFAs, microbial carbon utilization profiles, while being independent of microbial community structure. This study suggests water addition can increase soil carbon emission through increasing microbial utilization of labile carbon, and water plus nitrogen addition had no synergistic effects on soil microbial communities and soil respiration, demonstrating nitrogen is not a limiting factor for soil microbial communities in the scenario of increasing precipitation in this desert ecosystem. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Climate change Microbial biomass Microbial community composition Microbial respiration Temperate desert |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000376714200011 |
WOS关键词 | ECOSYSTEM CARBON EXCHANGE ; FATTY-ACID PROFILES ; INCREASED PRECIPITATION ; ALTERED PRECIPITATION ; SUBSTRATE UTILIZATION ; FUNCTIONAL DIVERSITY ; EPHEMERAL PLANTS ; USE EFFICIENCY ; RESPONSES ; BIOMASS |
WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
来源机构 | 中国科学院新疆生态与地理研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/191987 |
作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, South Beijing Rd 818, Xinjiang 830011, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, South Beijing Rd 818, Xinjiang 830011, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Su, Yan Gui,Huang, Gang,Lin, Ya Jun,et al. No synergistic effects of water and nitrogen addition on soil microbial communities and soil respiration in a temperate desert[J]. 中国科学院新疆生态与地理研究所,2016,142:126-133. |
APA | Su, Yan Gui,Huang, Gang,Lin, Ya Jun,&Zhang, Yuan Ming.(2016).No synergistic effects of water and nitrogen addition on soil microbial communities and soil respiration in a temperate desert.CATENA,142,126-133. |
MLA | Su, Yan Gui,et al."No synergistic effects of water and nitrogen addition on soil microbial communities and soil respiration in a temperate desert".CATENA 142(2016):126-133. |
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