Effects of reclamation of natural wetlands to a rice paddy on dissolved carbon dynamics in the sanjiang plain, northeastern china
文献类型：期刊论文
| 作者 | Wang, Lili1,2; Song, Changchun1; Song, Yanyu1; Guo, Yuedong1; Wang, Xianwei1; Sun, Xiaoxin1 |
| 刊名 | Ecological engineering
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 36期号:10页码:1417-1423 |
| 关键词 | Dissolved organic carbon Dissolved inorganic carbon Surface water Natural wetlands Rice paddy |
| ISSN号 | 0925-8574 |
| DOI | 10.1016/j.ecoleng.2010.06.021 |
| 通讯作者 | Song, changchun() |
| 英文摘要 | Natural wetlands play an important role in the global carbon cycle, and loss of dissolved carbon through water has been indicated as one of the most important carbon sources for riverine ecosystems during the last century, a large natural wetland area was reported to be converted to other land use types such as rice paddy land around the world. in this study, we explored the dynamics of dissolved organic carbon (doc) and dissolved inorganic carbon (dic) in two natural freshwater wetlands and a rice paddy field, which was reclaimed from the natural wetlands in the sanjiang plain. northeastern china, during the growing season (may-october) of 2009. the doc and dic concentrations in the two ecosystems were significantly different (p< 005). the mean doc concentrations during the growing season in the surface water of the deyeuxia angustifolia and carex lasiocarpa wetlands were 49.88 +/- 5 44 and 27 97 +/- 1 69 mg/l,. respectively. while it was only 8.63 +/- 2.54 mg/l in the rice paddy field. specific ultra-violet light absorption at 254 nm (suva(254)) of doc increased by an average of 19 54% in the surface water from the natural wetlands to rice paddy, suggesting that doc mobilized in the natural wetlands was more aromatic than that in the rice paddy field the mean dic concentration in surface water of the rice paddy was 5.25 and 5.04 times higher than that in the natural d. angustifolia and c lasiocarpa wetlands. respectively the average ratio of dic to dissolved total carbon (dtc) for the water sampled from the artificial drainage ditch in the rice paddy field was 61.82%. while it was 14 75% from the nearby channel of natural wetlands the significant differences in dissolved carbon concentration in surface water and channels originating from different land use types suggested that reclamation of natural wetlands to rice paddy field would reduce doc runoff and increase the dic concentration to adjacent watersheds. our study results for the changed pattern in dissolved carbon after the natural wetland was transformed to paddy field could have important implications for studying the impacts of the large-scale land use change to carbon cycle and management. crown copyright (c) 2010 published by elsevier b v all rights reserved |
| WOS关键词 | ORGANIC-CARBON ; INORGANIC CARBON ; BRITISH RIVERS ; WATER ; MATTER ; PEATLAND ; IMPACTS ; CLIMATE ; FLUXES ; EXPORT |
| WOS研究方向 | Environmental Sciences & Ecology ; Engineering |
| WOS类目 | Ecology ; Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000281339600025 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2414884 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Song, Changchun |
| 作者单位 | 1.Chinese Acad Sci, NE Inst Geog & Agroecol, Changchun 130012, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lili,Song, Changchun,Song, Yanyu,et al. Effects of reclamation of natural wetlands to a rice paddy on dissolved carbon dynamics in the sanjiang plain, northeastern china[J]. Ecological engineering,2010,36(10):1417-1423. |
| APA | Wang, Lili,Song, Changchun,Song, Yanyu,Guo, Yuedong,Wang, Xianwei,&Sun, Xiaoxin.(2010).Effects of reclamation of natural wetlands to a rice paddy on dissolved carbon dynamics in the sanjiang plain, northeastern china.Ecological engineering,36(10),1417-1423. |
| MLA | Wang, Lili,et al."Effects of reclamation of natural wetlands to a rice paddy on dissolved carbon dynamics in the sanjiang plain, northeastern china".Ecological engineering 36.10(2010):1417-1423. |
入库方式： iSwitch采集
来源：中国科学院大学
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。