Different responses of soil respiration and its components to experimental warming with contrasting soil water content
文献类型：期刊论文
| 作者 | Peng Fei1; Xu Manhou1,2; You Quangang1,2; Zhou Xuhui3; Wang Tao1; Xue Xian1 |
| 刊名 | Arctic antarctic and alpine research
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 47期号:2页码:359-368 |
| ISSN号 | 1523-0430 |
| DOI | 10.1657/aaar0014-018 |
| 通讯作者 | Xue xian(xianxue@lzb.ac.cn) |
| 英文摘要 | Soil water content (swc) regulation on the responses of soil respiration (r-s), autotrophic respiration (r-a), and heterotrophic respiration (r-h) to warming are rarely investigated in alpine meadow ecosystem in the qinghai-tibet plateau (qtp). we conducted a warming experiment to investigate how swc regulates the responses of r-s and its components (r-a and r-h) to warming. infrared heaters were used to simulate climatic warming. soil respiration was measured inside surface collars (2-3 cm deep) and r-h was measured inside deep collars (50 cm deep), which excludes root respiration. autotrophic respiration was calculated by subtracting r-h from r-s. warming increased the average r-s and r-h by 9.9% and 12.7% but had no significant effect on r-a. interaction between warming and swc had significant effect on r-s and its components. soil respiration and r-a decreased by 5.8% and 36.3% in dry conditions, but they increased by 23.5% and 47.7% in wet conditions. growing season above-ground biomass was enhanced by 0.1 kg m(-2) in wet conditions but reduced by 0.10 kg m(-2) in dry conditions under warming manipulation. the estimated net ecosystem carbon (c) balance was 0.65 and -0.16 kg m(-2) in wet and dry conditions, respectively, which indicates a net c emission of alpine meadow in wet but a net c sequestration in dry conditions. our results emphasize the importance of incorporating swc in simulation of ecosystem carbon balance under a warming climate. |
| WOS关键词 | QINGHAI-TIBET PLATEAU ; CARBON-CYCLE FEEDBACK ; CO2 FLUX ; ALPINE MEADOW ; PLANT-GROWTH ; ECOSYSTEM ; TEMPERATURE ; CLIMATE ; BIOMASS ; TUNDRA |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography |
| WOS类目 | Environmental Sciences ; Geography, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000355627500016 |
| 出版者 | INST ARCTIC ALPINE RES |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376656 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Xue Xian |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.E China Normal Univ, Sch Ecol & Environm Sci, Tiantong Natl Field Observat Stn Forest Ecosyst, Shanghai 200062, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng Fei,Xu Manhou,You Quangang,et al. Different responses of soil respiration and its components to experimental warming with contrasting soil water content[J]. Arctic antarctic and alpine research,2015,47(2):359-368. |
| APA | Peng Fei,Xu Manhou,You Quangang,Zhou Xuhui,Wang Tao,&Xue Xian.(2015).Different responses of soil respiration and its components to experimental warming with contrasting soil water content.Arctic antarctic and alpine research,47(2),359-368. |
| MLA | Peng Fei,et al."Different responses of soil respiration and its components to experimental warming with contrasting soil water content".Arctic antarctic and alpine research 47.2(2015):359-368. |
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来源：中国科学院大学
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