Biotic community shifts explain the contrasting responses of microbial and root respiration to experimental soil acidification
文献类型：期刊论文
| 作者 | Chen, Dima1; Wang, Yang; Lan, Zhichun; Li, Jianjun; Xing, Wen; Hu, Shuijin1; Bai, Yongfei
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| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2015 |
| 卷号 | 90页码:139-147 |
| 关键词 | Plant functional group Soil microbial communities Plant-soil interactions Carbon cycling models Base mineral cations Extracellular enzyme activity |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2015.08.009 |
| 文献子类 | Article |
| 英文摘要 | Soil respiration is comprised primarily of root and microbial respiration, and accounts for nearly half of the total CO2 efflux from terrestrial ecosystems. Soil acidification resulting from acid deposition significantly affects soil respiration. Yet, the mechanisms that underlie the effects of acidification on soil respiration and its two components remain unclear. We collected data on sources of soil CO2 efflux (microbial and root respiration), above- and belowground biotic communities, and soil properties in a 4-year field experiment with seven levels of acid in a semi-arid Inner Mongolian grassland. Here, we show that soil acidification has contrasting effects on root and microbial respiration in a typical steppe grassland. Soil acidification increases root respiration mainly by an increase in root biomass and a shift to plant species with greater specific root respiration rates. The shift of plant community from perennial bunchgrasses to perennial rhizome grasses was in turn regulated by the decreases in soil base cations and N status. In contrast, soil acidification suppresses microbial respiration by reducing total microbial biomass and enzymatic activities, which appear to result from increases in soil H+ ions and decreases in soil base cations. Our results suggest that shifts in both plant and microbial communities dominate the responses of soil respiration and its components to soil acidification. These results also indicate that carbon cycling models concerned with future climate change should consider soil acidification as well as shifts in biotic communities. (C) 2015 Elsevier Ltd. All rights reserved. |
| 学科主题 | Soil Science |
| 出版地 | OXFORD |
| WOS关键词 | NITROGEN DEPOSITION ; FOREST SOIL ; ENZYME-ACTIVITY ; ALUMINUM TOXICITY ; SEMIARID STEPPE ; SO2 EMISSIONS ; PH GRADIENT ; CO2 EFFLUX ; IN-SITU ; CARBON |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000363075500015 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Chinese National Key Development Program for Basic Research [2015CB954201] ; Natural Science Foundation of China [31320103916, 31570450, 31100335] ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25616]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.N Carolina State Univ, Dept Plant Pathol, Raleigh, NC 27695 USA |
| 推荐引用方式 GB/T 7714 | Chen, Dima,Wang, Yang,Lan, Zhichun,et al. Biotic community shifts explain the contrasting responses of microbial and root respiration to experimental soil acidification[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,90:139-147. |
| APA | Chen, Dima.,Wang, Yang.,Lan, Zhichun.,Li, Jianjun.,Xing, Wen.,...&Bai, Yongfei.(2015).Biotic community shifts explain the contrasting responses of microbial and root respiration to experimental soil acidification.SOIL BIOLOGY & BIOCHEMISTRY,90,139-147. |
| MLA | Chen, Dima,et al."Biotic community shifts explain the contrasting responses of microbial and root respiration to experimental soil acidification".SOIL BIOLOGY & BIOCHEMISTRY 90(2015):139-147. |
入库方式： OAI收割
来源：植物研究所
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