喀斯特地区供水水库营养演化历史重建
Reconstruction of trophic state changes in a karst water-supply reservoir
查看参考文献47篇
|
文摘
|
利用~(210)Pb-~(137)Cs年代学方法,结合洪水事件沉积层,综合建立了红枫湖沉积岩芯准确的年代学模型.在此基础上,通过测定沉积物多种地球化学指标(LOI、TOC、TN、C/N比、δ~(13)C_(org)、BSi),结合历史文献记录和已有的水质监测数据,重建了1960~2016年红枫湖营养状态变化历史.结果表明,建库以来红枫湖水体经历了多次营养状态的显著转换.其中,1991年开始水体逐渐从中营养转向富营养化状态,主要是人类活动引起的内、外源营养物质输入显著增加所致,特别是网箱养鱼活动可能起到重要作用;2000年开始,水体逐渐转向中营养化,主要是一系列保护和治理措施的实施;2004年开始,水体再次逐渐恶化,转向富营养化状态,主要是外源污染物输入增加,加上内源底泥营养物质的重新释放;2009年以来,水质逐渐改善,处于中营养化状态,主要是外源污染得到有效控制,但表层营养物质含量较高,现阶段在减少外源污染物输入的同时,应重点加强底泥污染物的治理工作. |
|
其他语种文摘
|
Based on ~(210)Pb-~(137)Cs dating and historical flood event records,we established an accurate chronology of a lake sediment core taken from the center of South Lake,the south part of Lake Hongfeng.On the basis of this chronology,the variations in the trophic status of Lake Hongfeng from 1960 to 2016AD were reconstructed by a comprehensive analysis of geochemical measurements(e.g.loss on ignition(LOI),total organic carbon(TOC),total nitrogen(TN),C/N ratio,stable carbon isotope of organic material(δ~(13)C_(org)),and biological silicon(BSi)),water quality parameters,and reference data.During the analyzed period,several significant changes in primary productivity and trophic status were identified.From 1991 to 1999,the trophic status had gradually evolved to eutrophication and primary productivity had been increasing consistently,this was caused by enhanced anthropogenic nutrients inputs,especially cage fish culture,which might have played an important role in this eutrophication.From 2000 to 2003,due to the implementation of a series of protection and regulation policies,the trophic status had gradually changed to mesotrophic and primary productivity was decreasing gradually.From 2004 to 2008,the trophic status reversed to eutrophication,which corresponds to the increasing of exogenous nutrients input and re-emission of deposited nutrients.Since 2009,Lake Hongfeng had been mesotropher after much stricter water quality control policies had been implemented.Though water quality had been improved significantly,the nutrients content was still on a relatively high level due to the consistent re-emission,which demonstrated that future treatment should not only focus on the reduction of exogenous pollutants,but also the containment of the endogenous sediments. |
|
来源
|
中国环境科学
,2020,40(12):5403-5412 【核心库】
|
|
关键词
|
富营养化
;
水库沉积物
;
古湖泊学
;
人为活动
|
|
地址
|
1.
遵义师范学院资源与环境学院, 贵州, 遵义, 563002
2.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550081
3.
中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室, 陕西, 西安, 710075
4.
东华理工大学, 江西省大气污染成因与控制重点实验室, 江西, 南昌, 330013
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-6923 |
|
学科
|
环境污染及其防治 |
|
基金
|
国家自然科学基金资助项目
;
贵州省教育厅青年科技人才成长项目
;
中国科学院地球环境研究所黄土与第四纪地质国家重点实验室基金
|
|
文献收藏号
|
CSCD:6868302
|
参考文献 共
47
共3页
|
|
1.
金相灿.
湖泊富营养化控制理论方法与实践,2013:1-12
|
被引
1
次
|
|
|
|
|
2.
Smol J P. Paleolimnology:An important tool for effective ecosystem management.
Journal of Aquatic Ecosystem Stress and Recovery,1992,1(1):49-58
|
被引
14
次
|
|
|
|
|
3.
Battarbee R W. The importance of palaeolimnology to lake restoration.
The Ecological Bases for Lake and Reservoir Management,1999:149-159
|
被引
1
次
|
|
|
|
|
4.
Filstrup C T. Use of sediment elemental and isotopic compositions to record the eutrophication of a polymictic reservoir in central Texas, USA.
Lakes & Reservoirs: Research and Management,2010,15(1):25-39
|
被引
1
次
|
|
|
|
|
5.
Costa-Boddeker S. Paleolimnologically inferred eutrophication of a shallow, tropical, urban reservoir in southeast Brazil.
Journal of Paleolimnology,2012,48(4):751-766
|
被引
1
次
|
|
|
|
|
6.
Liu J. Hydrodynamic change recorded by diatoms in sediments of Liuxihe Reservoir, southern China.
Journal of Paleolimnology,2012,47(1):17-27
|
被引
6
次
|
|
|
|
|
7.
贾滨洋. 三岔湖沉积物揭示的湖泊营养化进程与人类活动的关系.
中国环境科学,2013,33(9):1638-1644
|
被引
12
次
|
|
|
|
|
8.
曾红平. 滃江长湖水库沉积物营养元素沉积历史重构及源解析.
中国环境科学,2017,37(10):3910-3918
|
被引
5
次
|
|
|
|
|
9.
Shotbolt L A. The use of reservoir sediments as environmental archives of catchment inputs and atmospheric pollution.
Progress in Physical Geography,2005,29(3):337-361
|
被引
4
次
|
|
|
|
|
10.
Shotbolt L. Sediment stratigraphy and heavy metal Fluxes to reservoirs in the Southern Pennine Uplands, UK.
Journal of Paleolimnology,2006,35(2):305-322
|
被引
5
次
|
|
|
|
|
11.
Filstrup C T. Allochthonous organic matter supplements and sediment transport in a polymictic reservoir determined using elemental and isotopic ratios.
Biogeochemistry,2009,96(1/3):87-100
|
被引
1
次
|
|
|
|
|
12.
Xiao M. Investigation of low-molecular weight organic acids and their spatiotemporal variation characteristics in Hongfeng Lake, China.
Journal of Environmental Sciences,2013,25(2):237-245
|
被引
3
次
|
|
|
|
|
13.
白占国. 喀斯特区域的水化学不稳定性-以黔中地区为例.
水科学进展,1998,9(4):325-332
|
被引
6
次
|
|
|
|
|
14.
Wang J F. Effects of seasonal hypoxia on the release of phosphorus from sediments in deep-water ecosystem: A case study in Hongfeng Reservoir, Southwest China.
Environmental Pollution,2016,219:858-865
|
被引
14
次
|
|
|
|
|
15.
Liu B. Biogenic silica contents of Lake Qinghai sediments and its environmental significance.
Frontiers of Earth Science,2014,8(4):573-581
|
被引
3
次
|
|
|
|
|
16.
Anjum R. Linking sedimentary total organic carbon to 210Pbex chronology from Changshou Lake in the Three Gorges Reservoir Region, China.
Chemosphere,2017,174:243-252
|
被引
4
次
|
|
|
|
|
17.
Xu L. Relationship between 210Pbex activity and sedimentary organic carbon in sediments of 3Chinese lakes.
Environmental pollution,2011,159(12):3462-3467
|
被引
1
次
|
|
|
|
|
18.
Wan G J. Coupling between 210Pbex and organic matter in sediments of a nutrient-enriched lake: an example from Lake Chenghai, China.
Chemical Geology,2005,224(4):223-236
|
被引
13
次
|
|
|
|
|
19.
Xu J X. Some rainfall-related thresholds for erosion and sediment yield in the upper Yangtze River basin.
Environmental Geology,2009,56(6):1183-1192
|
被引
3
次
|
|
|
|
|
20.
Zhang X B. Application of a 137Cs fingerprinting technique for interpreting responses of sediment deposition of a karst depression to deforestation in the Guizhou Plateau, China.
Science China Earth Sciences,2011(3):121-127
|
被引
2
次
|
|
|
|
|
了解气象卫星更多信息，请访问