CH(4) uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China
文献类型：SCI/SSCI论文
| 作者 | Geng Y. B. ; Luo G. Q. ; Yuan G. F. |
| 发表日期 | 2010 |
| 关键词 | CH(4) uptake flux Leymus chinensis steppe affecting factors static opaque chamber/gas chromatography method landfill cover soil methane oxidation carbon-dioxide nitrous-oxide environmental-factors ecosystem co2 grasslands emission n2o |
| 英文摘要 | The influence of near ground atmosphere CH(4) concentration, soil water content, soil Eh, plants, soil temperature, and pH on CH(4) uptake flux of Leymus chinensis steppe during rapid growth season was studied using field in-situ measurement in Xilin River basin of Inner Mongolia, China. The results showed that CH(4) uptake flux was positively correlated with near ground atmosphere CH(4) concentration and soil Eh but negatively correlated with soil water content. Precipitation may decrease the CH(4) flux by increasing the soil water content. The average fluxes of three treatments during the observation period were 1.52 (natural conditions, 1.51 (aboveground plants were excluded), and 2.00 mg m(-2) d(-1) (all plants were removed), respectively. The difference between the CH(4) flux of natural condition treatment and that of removing aboveground plants treatment is small, whereas the flux of removing all plants treatment is larger than the other two treatments. This means that the contribution of aboveground plants to CH(4) uptake flux is smaller than that of roots or roots-removing process. CH(4) uptake flux is not sensitive to soil temperature and the narrow-ranged soil pH (6.36-7.86). The Leymus chinensis steppe acts as a sink for CH(4), and thus more studies should be focused on its affecting factors and related mechanisms. |
| 出处 | Science China-Earth Sciences |
| 卷 | 53 |
| 期 | 7 |
| 页 | 977-983 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1674-7313 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23941]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Geng Y. B.,Luo G. Q.,Yuan G. F.. CH(4) uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China. 2010. |
入库方式： OAI收割
来源：地理科学与资源研究所
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