Carbon availability affects soil respiration response to drying-rewetting cycles in semiarid grasslands of China under nitrogen deposition
文献类型：期刊论文
| 作者 | He, Yunlong1,2; Qi, Yuchun2 ; Peng, Qin2; Dong, Yunshe2; Guo, Shufang2; Yan, Zhongqing2; Li, Zhaolin2
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| 刊名 | EUROPEAN JOURNAL OF SOIL BIOLOGY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 93页码:5 |
| 关键词 | Soil respiration Carbon availability Nitrogen deposition Soil microbes Drying-rewetting cycle |
| ISSN号 | 1164-5563 |
| DOI | 10.1016/j.ejsobi.2019.103089 |
| 通讯作者 | Dong, Yunshe(dongys@igsnrr.ac.cn) |
| 英文摘要 | Soil carbon (C) availability is an important limiting factor affecting the magnitude of soil respiration with increasing the drying-rewetting cycle number. Previous studies have reported that because of a deficiency in available C, improved nitrogen (N) availability has no effects on soil respiration in semiarid grasslands. However, it is not well understood whether the effects of N availability on soil respiration in response to drying-rewetting cycles is regulated by C availability in semiarid grasslands under N deposition scenarios. A field experiment was conducted in a semiarid grassland of northern China to investigate the response of soil CO2 efflux to drying-rewetting cycles (natural precipitation events) with the addition of labile C (glucose, 48 g C m(-2) a(-1)) and N (NH4NO3, 10 g N m(-2) a(-1)) in August 2014. The drying-rewetting cycle significantly increased soil respiration rate in the treatments with both C and N additions, whereas it did not significantly increase soil respiration rate in the treatments with added N alone. After the first drying-rewetting cycle, a significant increase in soil microbial biomass C (MBC) content was observed in the treatments with both C and N additions but was not observed in the treatment with added N alone. After a series of drying-rewetting cycles, the cumulative CO2 efflux over the observed period was significantly higher in the treatments with both C and N additions than that in the treatment with added N alone. These findings imply that improved N availability during the period of 20 days has no effects on soil respiration in response to the drying-rewetting cycle due to microbial C limitation under N deposition scenarios in a semiarid grassland. |
| WOS关键词 | MICROBIAL BIOMASS ; DIFFERENTIAL RESPONSES ; N-MINERALIZATION ; WATER ; COMMUNITIES ; FREQUENCY ; ADDITIONS ; STORAGE |
| 资助项目 | National Natural Science Foundation of China[41573131] ; National Natural Science Foundation of China[41673086] ; National Natural Science Foundation of China[41330528] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000479022600004 |
| 出版者 | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68920]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Dong, Yunshe |
| 作者单位 | 1.Chinese Acad Forestry, Res Inst Forestry, State Forestry Adm, Key Lab Forest Silviculture, Beijing 100091, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Yunlong,Qi, Yuchun,Peng, Qin,et al. Carbon availability affects soil respiration response to drying-rewetting cycles in semiarid grasslands of China under nitrogen deposition[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2019,93:5. |
| APA | He, Yunlong.,Qi, Yuchun.,Peng, Qin.,Dong, Yunshe.,Guo, Shufang.,...&Li, Zhaolin.(2019).Carbon availability affects soil respiration response to drying-rewetting cycles in semiarid grasslands of China under nitrogen deposition.EUROPEAN JOURNAL OF SOIL BIOLOGY,93,5. |
| MLA | He, Yunlong,et al."Carbon availability affects soil respiration response to drying-rewetting cycles in semiarid grasslands of China under nitrogen deposition".EUROPEAN JOURNAL OF SOIL BIOLOGY 93(2019):5. |
入库方式： OAI收割
来源：地理科学与资源研究所
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