Historical variations of sedimentary organic matter sources and their relationships with human socio-economic activities in multiple habitats of a shallow lake
文献类型：期刊论文
| 作者 | Yin, Zheng ; Li, Liqing; Liu, Chenyu; Yan, Weijin; Wang, Lai; Zhang, Meiyi; Wang, Dongsheng
|
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2022-07 |
| 卷号 | 140期号:0页码:109011 |
| 关键词 | ENVIRONMENTAL-CHANGES SURFACE SEDIMENTS BAIYANGDIAN LAKE HUMAN IMPACTS CARBON EUTROPHICATION NITROGEN BAY GEOCHEMISTRY DELTA-N-15 |
| ISSN号 | 1470-160X |
| 英文摘要 | Understanding the source and historical variation of sedimentary organic matter (OM) and their relationships with human socio-economic activities is of great significance to water resource management. In this work, sediment cores from five different habitats were collected in Baiyangdian Lake, China. A Bayesian model (stable isotope analysis in R, SIAR) was utilized to apportion the historical changes of the proportional contributions of potential sources in sediments based on carbon and nitrogen stable isotopes (813C and 815N) and C/N ratios. The impacts of human socio-economic activity factors (GDP, population) on the historical variations of sedimentary OM source have been evaluated by the generalized additive models (GAMs). The results showed that autochthonous OM (phytoplankton) was the dominant sediment OM source in river course (13%-48%), lotus pond (16%-48%) and open water (16%-47%), and the contributions began to increase after 1944, 1950 and 1962, respectively. Phytoplankton (37%-53%) was also the main source of OM in sediments of fish pond, but its contribution had remained high throughout. Allochthonous OM (soil OM: 29%-42%) was the main source of sedimentary OM in reed marshes, and it showed a slow increasing trend after 1995. The GAMs results showed that population was the dominant contributor to the variations of OM sources in sediments of lotus pond, open water and fish pond and GDP was the dominant contributor to that in sediments of reed marshes, with the interpretation rates of 70%-99%. Both GDP and population were dominant influence factors on sedimentary OM sources of river course, which account for 52%-98%. It is proved that human socio-economic activities have significant impact on the historical variations of sedimentary OM sources. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47700]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Yangtze River Delta Sub Ctr, Yiwu City 322000, Zhejiang, Peoples R China 4.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China 5.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Zheng,Li, Liqing,Liu, Chenyu,et al. Historical variations of sedimentary organic matter sources and their relationships with human socio-economic activities in multiple habitats of a shallow lake[J]. ECOLOGICAL INDICATORS,2022,140(0):109011. |
| APA | Yin, Zheng.,Li, Liqing.,Liu, Chenyu.,Yan, Weijin.,Wang, Lai.,...&Wang, Dongsheng.(2022).Historical variations of sedimentary organic matter sources and their relationships with human socio-economic activities in multiple habitats of a shallow lake.ECOLOGICAL INDICATORS,140(0),109011. |
| MLA | Yin, Zheng,et al."Historical variations of sedimentary organic matter sources and their relationships with human socio-economic activities in multiple habitats of a shallow lake".ECOLOGICAL INDICATORS 140.0(2022):109011. |
入库方式： OAI收割
来源：生态环境研究中心
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