Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition | |
| Fang, Huajun1; Cheng, Shulan2; Yu, Guirui1; Zheng, Jiaojiao2; Zhang, Peilei2; Xu, Minjie2; Li, Yingnian3; Yang, Xueming4 | |
| 2012-02-01 | |
| 发表期刊 | PLANT AND SOIL
 |
| ISSN | 0032-079X |
| 卷号 | 351期号:1-2页码:177-190 |
| 文章类型 | Article |
| 摘要 | To assess the effects of atmospheric N deposition on the C budget of an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, it is necessary to explore the responses of soil-atmosphere carbon dioxide (CO2) exchange to N addition. Based on a multi-form, low-level N addition experiment, soil CO2 effluxes were monitored weekly using the static chamber and gas chromatograph technique. Soil variables and aboveground biomass were measured monthly to examine the key driving factors of soil CO2 efflux. The results showed that low-level N input tended to decrease soil moisture, whereas medium-level N input maintained soil moisture. Three-year N additions slightly increased soil inorganic N pools, especially the soil NH (4) (+) -N pool. N applications significantly increased aboveground biomass and soil CO2 efflux; moreover, this effect was more significant from NH (4) (+) -N than from NO (3) (-) -N fertilizer. In addition, the soil CO2 efflux was mainly driven by soil temperature, followed by aboveground biomass and NH (4) (+) -N pool. These results suggest that chronic atmospheric N deposition will stimulate soil CO2 efflux in the alpine meadow on the Qinghai-Tibetan Plateau by increasing available N content and promoting plant growth.; To assess the effects of atmospheric N deposition on the C budget of an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, it is necessary to explore the responses of soil-atmosphere carbon dioxide (CO2) exchange to N addition. |
| 关键词 | Atmospheric n Deposition Soil n Availability Soil Co2 Efflux Driving Factors Alpine Meadow |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 关键词[WOS] | ECOSYSTEM CARBON EXCHANGE ; NITROGEN DEPOSITION ; TEMPERATE STEPPE ; TROPICAL FOREST ; SOUTHERN CHINA ; ORGANIC-CARBON ; N2O EMISSIONS ; RESPIRATION ; FERTILIZATION ; GRASSLANDS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| WOS记录号 | WOS:000299959100013 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/3726 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.CAS, NW Plateau Inst Biol, Xining 810001, Qinghai, Peoples R China 4.Agr & Agri Food Canada, Greenhouse & Proc Crops Res Ctr, Harrow, ON N0R 1G0, Canada |
| 推荐引用方式 GB/T 7714 | Fang, Huajun,Cheng, Shulan,Yu, Guirui,et al. Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition[J]. PLANT AND SOIL,2012,351(1-2):177-190. |
| APA | Fang, Huajun.,Cheng, Shulan.,Yu, Guirui.,Zheng, Jiaojiao.,Zhang, Peilei.,...&Yang, Xueming.(2012).Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition.PLANT AND SOIL,351(1-2),177-190. |
| MLA | Fang, Huajun,et al."Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition".PLANT AND SOIL 351.1-2(2012):177-190. |
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