基于综合营养状态指数的喀斯特高原湖泊富营养化研究

Eutrophication of Lakes in Karst Plateau Based on the Comprehensive Trophic State Index Method

随着社会的进步和经济的不断发展,人类对地表的干扰程度逐年上升,我国大部分湖泊都受到了不同程度的污染,尤其是因氮、磷等营养物质所引起的湖泊富营养化,严重影响了湖泊水库水质及水体生态系统的平衡。喀斯特高原湖泊具有独特的生态环境与地理背景,其生态系统较为脆弱,破坏之后难以恢复。因此,对百花湖表层各理化指标进行监测,统计了2012~2016年间各月的理化参数,分析各指标的时空变化趋势,并运用综合营养状态指数评价法对百花湖进行综合评价,得出该水库2012~2016年的富营养化等级及其变化趋势,以期为百花湖污染提供综合防治的依据。

Many lakes have been seriously polluted by increasing human activities on the earth's surface with social and economic development,especially for eutrophication caused by the nutrients such as nitrogen and phosphorus.Karst plateau lakes have unique ecological environment and geographical background.Because of their fragile ecosystem,it is difficult to recover from ecological damage.Therefore,this paper monitored and counted the monthly physical and chemical parameters in the Baihua Lake during 2012-2016.In addition,it analyzed the temporal and spatial trends of the different indexes,then the comprehensive evaluation of Baihua Lake was carried out by using the comprehensive nutritional status index evaluation method.The results show the eutrophication grades and its changing trend of the reservoir,which would provide a basis for comprehensive prevention and control of pollution in the Baihua Lake.