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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。
Water temperature and water chemistry (DO, pH, TP) of Nanfengjiang canyon reservoir - Wanfeng Lake were monitored in September 2009 (autumn) and January 2010 (winter). The results show that: There were obvious stratification in autumn and winter. In autumn, the water body was divided into three layers, 0-10 m for the mixed layer, 10-50 m for the temperate layer, and below 50 m for the stagnant water layer. This temperature stratification prevented The convection of water mixed, causing significant chemical stratification of water to form the bottom of the anaerobic layer. Winter, the water temperature dropped, sub-50 m underwater stratification, the surface temperature decreases with depth, the lower layer of stagnant water, the water temperature is more uniform. Correlation analysis showed that there was a significant correlation between water temperature and DO, pH and total phosphorus in Wanfeng Lake between September 2009 (autumn) and January 2010 (winter), and the water chemistry stratification was synchronized with temperature stratification.