Distribution characteristics of dissolved organic carbon in annular wetland soil-water solutions through soil profiles in the sanjiang plain, northeast china
文献类型：期刊论文
| 作者 | Xi Min; Lu Xian-guo; Li Yue; Kong Fan-long |
| 刊名 | Journal of environmental sciences-china
 |
| 出版日期 | 2007 |
| 卷号 | 19期号:9页码:1074-1078 |
| 关键词 | Dissolved organic carbon (doc) Distribution characteristics Annular wetland Soil-water solutions Sanjiang plain |
| ISSN号 | 1001-0742 |
| 通讯作者 | Lu xian-guo(luxg@neigae.ac.cn) |
| 英文摘要 | Overwhelming evidence reveals that concentrations of dissolved organic carbon (doc) have increased in streams which brings negative environmental impacts. doc in stream flow is mainly originated from soil-water solutions of watershed. wetlands prove to be the most sensitive areas as an important doc reserve between terrestrial and fluvial biogeosystems. this reported study was focused on the distribution characteristics and the controlling factors of doc in soil-water solutions of annular wetland, i.e., a dishing wetland and a forest wetland together, in the sanjiang plain, northeast china. the results indicate that doc concentrations in soil-water solutions decreased and then increased with increasing soil depth in the annular wetland. in the upper soil layers of 0-10 cm. and 10-20 cm, doc concentrations in soil-water solutions linearly increased from edge to center of the annular wetland (r(2) = 0.3122 and r(2) = 0.443). the distribution variations were intimately linked to doc production and utilization and doc transport processes in annular wetland soil-water solutions. the concentrations of total organic carbon (toc), total carbon (tc) and fe(ii), doc mobility and continuous vertical and lateral flow affected the distribution variations of doc in soil-water solutions. the correlation coefficients between doc concentrations and toc, tc and fe(ii) were 0.974, 0.813 and 0.753 respectively. these distribution characteristics suggested a systematic response of the distribution variations of doc in annular wetland soil-water solutions to the geometry of closed depressions on a scale of small catchments. however, the doc in soil pore water of the annular wetland may be the potential source of doc to stream flow on watershed scale. these observations also implied the fragmentation of wetland landscape could bring the spatial-temporal variations of doc distribution and exports, which would bring negative environmental impacts in watersheds of the sanjiang plain. |
| WOS关键词 | DOC ; CATCHMENT ; INCREASES ; PEATLAND |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000249573100010 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380051 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Lu Xian-guo |
| 作者单位 | 1.Chinese Acad Sci, NE Inst Geog & Agr Ecol, Changchun 130012, Jilin, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xi Min,Lu Xian-guo,Li Yue,et al. Distribution characteristics of dissolved organic carbon in annular wetland soil-water solutions through soil profiles in the sanjiang plain, northeast china[J]. Journal of environmental sciences-china,2007,19(9):1074-1078. |
| APA | Xi Min,Lu Xian-guo,Li Yue,&Kong Fan-long.(2007).Distribution characteristics of dissolved organic carbon in annular wetland soil-water solutions through soil profiles in the sanjiang plain, northeast china.Journal of environmental sciences-china,19(9),1074-1078. |
| MLA | Xi Min,et al."Distribution characteristics of dissolved organic carbon in annular wetland soil-water solutions through soil profiles in the sanjiang plain, northeast china".Journal of environmental sciences-china 19.9(2007):1074-1078. |
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。