Response of soil respiration to water and nitrogen addition and its influencing factors: a four-year field experiment in a temperate steppe
文献类型：期刊论文
| 作者 | Li, ZhaoLin1,2; Peng, Qin1; Dong, YunShe1; He, YunLong1,2; Yan, ZhongQing1,2; Guo, Yu1,2; Qin, Shuqi1,2; Qi, Yuchun1 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2021-12-02 |
| 页码 | 16 |
| 关键词 | Carbon flux Global change Soil microbe Temperate grassland |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-021-05221-3 |
| 通讯作者 | Peng, Qin(pengqin@igsnrr.ac.cn) ; Dong, YunShe(dongys@igsnrr.ac.cn) |
| 英文摘要 | Purpose Soil respiration (Rs) plays a crucial role in the terrestrial carbon cycle. We attempted to investigate how changes in water and nitrogen affect the Rs of grassland ecosystems through biotic and abiotic factors under the context of global change. Methods We conducted a 4-year manipulative field experiment with a randomized complete block design in a 2 x 4 factorial consisting of two water addition levels and three nitrogen addition levels in a typical temperate grassland in China to explore the response of Rs to different water and nitrogen addition treatments in the growing season, and the potential factors controlling Rs were analyzed using structural equation modeling (SEM). Results Water addition significantly enhanced the cumulative Rs in all years. The precipitation during the months of vigorous plant growth (May to July) was an important factor in determining the average Rs during the growing season. Nitrogen addition alone had no significant impacts on Rs except for short-term positive effects caused by low nitrogen addition (25 kg N ha(-1) yr(-1)) during the period after nitrogen application in the first year. Although soil microbes and plant roots contributed to Rs, the main factors controlling Rs were still temperature and soil moisture. Conclusion These findings indicate that water addition could promote Rs in semiarid grassland ecosystems. Changes in environmental factors could control Rs by affecting soil microorganisms and plant roots activity. |
| WOS关键词 | COLLAR-INSERTION DEPTH ; CARBON-DIOXIDE FLUX ; INNER-MONGOLIA ; CO2 EFFLUX ; HETEROTROPHIC RESPIRATION ; DIFFERENTIAL RESPONSES ; MICROBIAL RESPIRATION ; ORGANIC-CARBON ; CLIMATE-CHANGE ; PRECIPITATION |
| 资助项目 | National Natural Science Foundation of China[42177224] ; National Natural Science Foundation of China[41673086] ; National Natural Science Foundation of China[41330528] ; National Natural Science Foundation of China[41573131] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000725456200012 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/168420]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Peng, Qin; Dong, YunShe |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, ZhaoLin,Peng, Qin,Dong, YunShe,et al. Response of soil respiration to water and nitrogen addition and its influencing factors: a four-year field experiment in a temperate steppe[J]. PLANT AND SOIL,2021:16. |
| APA | Li, ZhaoLin.,Peng, Qin.,Dong, YunShe.,He, YunLong.,Yan, ZhongQing.,...&Qi, Yuchun.(2021).Response of soil respiration to water and nitrogen addition and its influencing factors: a four-year field experiment in a temperate steppe.PLANT AND SOIL,16. |
| MLA | Li, ZhaoLin,et al."Response of soil respiration to water and nitrogen addition and its influencing factors: a four-year field experiment in a temperate steppe".PLANT AND SOIL (2021):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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