Spatial variations in water chemical components in a coastal zone of northern China: Insights from environmental isotopes
文献类型：期刊论文
| ; | |
| 作者 | Wang, Xin-Chu; Yue, Fu-Jun; Li, Si-Liang; Li, Xiao-Zheng; Lang, Yun-Chao; Hu, Jian ; Ding, Hu; Liu, Cong-Qiang
|
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 612期号:0页码:128054 |
| 关键词 | MULTIVARIATE STATISTICAL TECHNIQUES PEARL RIVER ESTUARY FRESH-WATER SEAWATER INTRUSION STABLE-ISOTOPES ORGANIC-MATTER SURFACE-WATER GROUNDWATER CHEMISTRY IDENTIFY SOURCES NITROGEN-SOURCES |
| ISSN号 | 0022-1694 |
| 英文摘要 | Coastal zones (CZ) are ecologically and environmentally significant, and it is thus critical to study the interactions among different types of natural CZ waters for better understanding biogeochemical processes. Water samples (n = 101) were analyzed for multiple stable isotopes (delta O-18-H2O, SD-H2O, delta N-15-PON, delta N-15-NO3-, and delta O-18-NO3-) in seawater, river water, reservoir water and groundwater at Tianjin CZ to demonstrate the spatial variations in the CZ aqueous environment and to identify key influencing processes factors of the N geochemical cycle. This study confirmed that weathering dominated upstream water properties, whereas seawater intrusion determined the downstream and midstream water chemical components, where the seawater fraction was 44% and 11%, respectively. Evaporation and precipitation processes were active across the whole CZ area, but their impacts on water chemical components were less significant than seawater intrusion and weathering. Dam regulation in CZ rivers has significantly affected water chemical components and the nitrogen cycle. The isotopic evidence indicated that bacterioplankton and phytoplankton were the primary forms of PON. The dual nitrate isotopes revealed that animal manure and industrial sewage contributed the leading nitrate to river water. The spatial variation of their contribution was quantitated (from upstream to midstream and downstream: 62%, 91% and 83%, respectively). Considering the potential isotopic fractionation of nitrification reduction from upstream to downstream, 39%, 61% and 57%, respectively. This study proposes a quantitative framework for detecting CZ areas with similar hydrodynamic conditions and climate characteristics found at the Tianjin CZ, which has important implications for CZ water management and environmental protection policies. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47338]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Yue, Fu-Jun |
| 作者单位 | 1.Tianjin Univ, Tianjin Key Lab Earth Crit Zone Sci & Sustainable, Tianjin 300072, Peoples R China 2.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 3.Haihe Lab Sustainable Chem Transformat, Tianjin 300192, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xin-Chu,Yue, Fu-Jun,Li, Si-Liang,et al. Spatial variations in water chemical components in a coastal zone of northern China: Insights from environmental isotopes, Spatial variations in water chemical components in a coastal zone of northern China_ Insights from environmental isotopes.pdf[J]. JOURNAL OF HYDROLOGY,2022,612(0):128054. |
| APA | Wang, Xin-Chu.,Yue, Fu-Jun.,Li, Si-Liang.,Li, Xiao-Zheng.,Lang, Yun-Chao.,...&Liu, Cong-Qiang.(2022).Spatial variations in water chemical components in a coastal zone of northern China: Insights from environmental isotopes.JOURNAL OF HYDROLOGY,612(0),128054. |
| MLA | Wang, Xin-Chu,et al."Spatial variations in water chemical components in a coastal zone of northern China: Insights from environmental isotopes".JOURNAL OF HYDROLOGY 612.0(2022):128054. |
入库方式： OAI收割
来源：生态环境研究中心
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。