1. A 120-year sedimentary record and its environmental implications, in a dated marine sediment core from Daya Bay in the northeastern South China Sea
- Author
-
Hansheng Yu, Xiaomin Li, Dongmei Li, Peng Zhou, Li Zhao, Zhao Feng, Haitao Li, and Zhixin Ni
- Subjects
0106 biological sciences ,China ,Geologic Sediments ,South china ,Nitrogen ,Daya bay ,Aquaculture ,010501 environmental sciences ,Aquatic Science ,Environment ,Oceanography ,01 natural sciences ,Loss on ignition ,Water content ,Sediment core ,0105 earth and related environmental sciences ,business.industry ,010604 marine biology & hydrobiology ,Silicon Dioxide ,Pollution ,Carbon ,Bays ,Agriculture ,Nuclear Power Plants ,Environmental science ,Sedimentary rock ,business ,Environmental Monitoring - Abstract
In a Daya Bay 120-year dated sediment core(1892-2010), analyses were conducted of grain-size, water content, TOC, TIC, TC, loss on ignition, TN, BSi and TP, to reconstruct the anthropogenic activity history. The entire core was divided into four periods. Multi-parametric measurements, their ratios and interrelations are seen to clearly reflect the development of agriculture, aquaculture, industry and social economy surrounding Daya Bay. The trends of TOC, TOM and BSi after 1990 may be due to mass input of nutritious matter from aquaculture and industry, whereas the trends of BSi, TOC and TOM between 1960 and 1990 were owing to aquaculture and agriculture. Two peaks of BSi, TOC and TOM in 1994 and 2002 imply that the mass input of cooling water from nuclear power plants may be a significant contributor to ecological environment changes. Finally, some proposals were put forward for the healthy and sustainable development of Daya Bay.
- Published
- 2018