Effects of changing C and N availability on soil respiration dynamics in a temperate grassland in northern China
文献类型：期刊论文
| 作者 | He, Yunlong1,2; Qi, Yuchun2 ; Dong, Yunshe1,2; Peng, Qin2; Guo, Shufang1,2; Yan, Zhongqing1,2; Li, Zhaolin1,2; Wang, Liqin1,2
|
| 刊名 | GEODERMA
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 329页码:20-26 |
| 关键词 | Soil respiration C availability N deposition Microbial biomass Semiarid grassland |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2018.03.020 |
| 通讯作者 | Dong, Yunshe(dongys@igsnrr.ac.cn) ; Peng, Qin(pengqin@igsnrr.ac.cn) |
| 英文摘要 | Soil carbon (C) availability may play a crucial role in regulating how soil respiration responds to the increase of nitrogen (N) inputs. However, the related research is sporadic so far and has not adequately verified this speculation or addressed the topic in a widespread temperate grassland ecosystem. This lack of knowledge hinders our further accurate prediction of C emissions from terrestrial ecosystems. To improve our knowledge of the role of soil C resources in regulating Rs responses to N inputs, we established a situ field experiment with three levels of N addition (0, 50, and 100 kg N ha(-1) yr(-1)) and two levels of glucose (G) addition (0 and 480 kg C ha(-1) yr(-1)) to determine the Rs dynamics in a temperate semiarid grassland in China. The results showed that only N addition had no significant effects on Rs as well as microbial biomass C (MBC) during our 168-hour observation period, whereas G addition and G addition together with N addition had positive effects on Rs and MBC. The regression analysis further showed that the cumulative CO2 efflux was significantly positively related to soil MBC concentrations during the 168-hour observation period. Altogether, our findings verify that soil C availability is an important driver affecting the Rs response to N addition. No response of Rs to increased N availability resulting from N input was attributed to microbial C limitation in a semiarid grassland during a 168-hour observation. |
| WOS关键词 | SIMULATED NITROGEN DEPOSITION ; MICROBIAL BIOMASS ; SEMIARID GRASSLAND ; ENZYME-ACTIVITIES ; INNER-MONGOLIA ; ORGANIC-CARBON ; LABILE CARBON ; FERTILIZATION ; WATER ; METAANALYSIS |
| 资助项目 | National Natural Science Foundation of China[41330528] ; National Natural Science Foundation of China[41573131] ; National Natural Science Foundation of China[41673086] ; National Natural Science Foundation of China[41373084] ; National Natural Science Foundation of China[41203054] ; Special Fund for Agro-scientific Research in the Public Interest[201203012] ; National Science & Technology Infrastructure Supports |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000436221200003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; Special Fund for Agro-scientific Research in the Public Interest ; National Science & Technology Infrastructure Supports |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/54643]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Dong, Yunshe; Peng, Qin |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Yunlong,Qi, Yuchun,Dong, Yunshe,et al. Effects of changing C and N availability on soil respiration dynamics in a temperate grassland in northern China[J]. GEODERMA,2018,329:20-26. |
| APA | He, Yunlong.,Qi, Yuchun.,Dong, Yunshe.,Peng, Qin.,Guo, Shufang.,...&Wang, Liqin.(2018).Effects of changing C and N availability on soil respiration dynamics in a temperate grassland in northern China.GEODERMA,329,20-26. |
| MLA | He, Yunlong,et al."Effects of changing C and N availability on soil respiration dynamics in a temperate grassland in northern China".GEODERMA 329(2018):20-26. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。