Some sediment-geochemical evidence for the recent environmental changes of the lakes from the middle and lower Yangtze River basin, China
Some sediment-geochemical evidence for the recent environmental changes of the lakes from the middle and lower Yangtze River basin, China
复制标题
中国长江中下游地区湖泊近期环境变化的一些沉积物地球化学证据
DOI：
10.1016/j.quaint.2010.02.024
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发表时间：
2010-10
影响因子：
2.2
通讯作者：
Zhu, Yuxin
中科院分区：
文献类型：
--
作者：
Xue, Bin;Yao, Shuchun;Xia, Weilan;Zhu, Yuxin
近几十年来，长江中下游湖泊水质急剧恶化，水体富营养化严重。利用几个典型湖泊钻孔岩心的沉积地球化学记录，研究了湖泊沉积物中营养物和金属随时间的富集规律。结果表明，总有机碳和总氮浓度随剖面深度的增加而增加。向湖泊系统输送的有机质增加可能是湖底沉积物中营养物质富集的原因。岩心营养物质富集向上的总体趋势表明，这些湖泊自20世纪50年代中期（大型植物型湖泊）或80年代后期（藻类型湖泊）开始富营养化。此外，从沉积速率的变化和沉积物岩心中人为金属积累的变化来看，人类活动对20世纪50年代以来的湖泊环境变化产生了很大的影响。人类活动的增强似乎发生在20世纪70年代早期。
The lakes along the middle-lower Yangtze River Basin have undergone dramatic water quality deterioration and eutrophication during recent decades. The nutrient and metal accumulation in the lake sediments through time were investigated using the sedimentary-geochemical records of the drilling cores from several typical lakes. The results showed a general increase in total organic carbon and total nitrogen concentration with lower depth in the profiles. Increased delivery of organic matter to the lake system could be responsible for the nutrient enrichments in the lake bottom sediments. The general trend of nutrients matter enriched upwards in the core indicated that these lakes had become eutrophic since the mid-1950s (macrophyte-type lake), or late 1980s (algae-type lake). In addition, the results have also shown that human activities have exerted a great influence on the past lake environmental changes since the 1950s, inferred from the changes in the sedimentary rate and the anthropogenic metal accumulation in the sediment cores. Enhanced human activities seem to occur around the early 1970s.
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影响因子：
3.9
作者：
Du, Y;Cai, SM;Zhao, Y
通讯作者：
Zhao, Y
影响因子：
3.9
作者：
G. Wan;P. Santschi;M. Sturm;Klaus. Farrenkothen;Alfred. Lueck;E. Werth;C. Schuler
通讯作者：
G. Wan;P. Santschi;M. Sturm;Klaus. Farrenkothen;Alfred. Lueck;E. Werth;C. Schuler
影响因子：
12.8
作者：
M. Søndergaard;J. Windolf;E. Jeppesen
通讯作者：
M. Søndergaard;J. Windolf;E. Jeppesen
影响因子：
2.6
作者：
Qin, Boqiang;Xu, Pengzhu;Zhang, Yunlin
通讯作者：
Zhang, Yunlin
影响因子：
3.9
作者：
Jian Wang;Xia Chen;Xiao-hua Zhu;Jinliang Liu;William Y. B. Chang
通讯作者：
Jian Wang;Xia Chen;Xiao-hua Zhu;Jinliang Liu;William Y. B. Chang