【作者】 齐瑞环； 龙健； 朱健； 康福星；

【Author】 QI Rui-huan1,2, LONG Jian1,2,ZHU Jian1,2, KANG Fu-xing1,2 (1.Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University,Guiyang,550001,China; 2.School of Geography and Biology, Guizhou Normal University, Guiyang 550001,China)

【机构】 贵州省山地环境信息系统与生态环境保护重点实验室； 贵州师范大学地理与环境科学学院；

【摘要】 依据对贵州高原喀斯特深水水库-百花湖、红枫湖近10年的监测数据和资料,对"两湖"的水质变化和趋势进行了分析。其主要变化表现在:"两湖"N、P比的平均值由1998年的103:1下降到2007年的14:1,磷含量快速增加,营养盐限制性因子由P限制逐步向N限制过渡。"两湖"中浮游植物群落组成明显小型化,生物多样性降低,个体密度大幅度下降,但密度仍大于1×107。湖体底泥含量加速增加,其中的TN、TP、COD年增长量也逐渐加快。这些研究结果表明,两湖水体已呈富营养化状态,并表现出极度富营养化趋势。更多还原

【Abstract】 Based on the observed data and information from last decade of the karst deep reservoirs of baihua and hongfeng lakes, the changes and trend of water quality in the two lakes are analyzed. The main changes are that in the two lakes the average N/P ratio has decreased from 103 in 1998 to 14 in 2007,and the content of phosphorus increase rapidly , and the limiting nutrient factor has changed from P to N. The Phytoplankton communities have been miniaturized, their biodiversities simplified and the individual density declined ,however, the density over 1×107.The content of sediment post increase ,and the growth rates of TN, TP, COD are gradually speeding up. These results show that two lakes have taken on nutrition status,and extreme Eutrophication trend also has put up.更多还原