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生态学杂志 ›› 2011, Vol. 30 ›› Issue (05): 1039-1044.

• 汞的生物地球化学专辑 • 上一篇    

水体热分层对万峰湖水环境的影响

邱华北1,2,商立海2**,李秋华2,3,李广辉2,冯新斌2   

  1. 1西南大学资源与环境学院, 重庆北碚 400715;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, 贵阳 550002;3贵州师范大学贵州省山地环境信息系统和生态环境保护重点实验室, 贵阳 550001
  • 出版日期:2011-05-08 发布日期:2011-05-08

Impacts of seasonal thermal stratification on the water environment of Wanfeng Lake.

QIU Hua-bei1,2, SHANG Li-hai2**, LI Qiu-hua2,3, LI Guang-hui2, FENG Xin-bin2   

  1. 1College of Resources and Environment, Southwest University, Chongqing 400715, China|2State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China|3Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guiyang 550001, China
  • Online:2011-05-08 Published:2011-05-08

摘要: 2009年9月(秋季)和2010年1月(冬季)对南盘江流域峡谷型水库——万峰湖的水温和水化学(DO、pH、总磷)进行监测,结果表明:万峰湖水体在秋、冬季节均存在明显分层,秋季,水体分为3层,0~10 m为混匀层,10~50 m为斜温层,50 m以下为滞水层,这种温度分层阻止了水的对流混合,引起显著的水化学分层,形成底部厌氧层。冬季,水温下降,在水下50 m左右分层,表层随深度增加水温下降,下层为滞水层,水温较为均匀。相关性分析表明,万峰湖在2009年9月(秋季)和2010年1月(冬季)水温和DO、pH、总磷之间均为极显著相关,水化学分层与温度分层同步。

关键词: 甲烷, 甲烷氧化菌, 氨态氮, 硝态氮, 抑制, 土壤

Abstract: The water temperature and hydrochemical parameters during September 2009 and January 2010 of Wanfeng Lake in Guizhou Province were surveyed. A clear thermal stratification was found at the vertical profile of water column in autumn and winter.  In autumn, a double thermocline appeared, which effectively limited the convective mixing of upper, intermediate and bottom of the layer water, caused water and water chemistry layed significantly.  In winter, with the decreasing temperature of upper layer water, because the subsidence of the upper water due to the density changing, the water stratified structure changed, and convection exchange appeared between the upper and the bottom water, so the reducing matter released by anaerobic digestion was brought into the upper layer water. Seasonal thermal stratification played an important role in water quality and environmental change of Wanfeng Lake. Correlation analysis shows that, in Wanfeng Lake, the water temperature was significantly correlated with hydrochemical parameters (DO, pH, and total phosphorus) in September of 2009 and January of 2010, thus water chemistry layered with the temperature stratification synchronization.

Key words: Methane, Methane oxidizing bacteria, Ammonium, Nitrate, Inhibition, Soil