基于综合营养状态指数的百花湖水环境评价  

Water environment assessment of Baihua lake based on comprehensive trophic state index method

作　　者：赵梦 焦树林[1,2] 梁虹 曹玉平[1,2] ZHAO Meng;JIAO Shulin;LIANG Hong;CAO Yuping(School of Geography and Environmental Science,Guizhou Normal University,Guiyang 550001,China;Key Laboratory of Remote Sensing Applicationon Mountain Resources and Environment in Guizhou Province,Guiyang 550001,China)

机构地区：[1]贵州师范大学地理与环境科学学院,贵州贵阳550001 [2]贵州省山地资源与环境遥感应用重点实验室,贵州贵阳550001

出　　处：《人民长江》2019年第9期48-53,76,共7页Yangtze River

基　　金：国家自然科学基金项目(41263011);贵州省国内一流学科建设项目“贵州师范大学地理学”(黔教科研发[2017]85号)

摘　　要：百花湖生态系统较为脆弱,破坏之后难以恢复。通过对百花湖丰水期、平水期和枯水期水体理化参数的监测,利用综合营养状态指数法对百花湖水环境状况进行了系统评价。结果表明:百花湖表层水温在11.2℃~22.5℃之间,pH值为7.7~8.4,溶解氧为5.0~14.9 mg/L,透明度为0.6~1.9 m;总氮、总磷分别为1.4~4.1,0.030~0.964 mg/L,氮磷比在14.9~64.3之间,为高氮、磷控制的水库;氨氮在0.01~1.85 mg/L之间;丰水期百花湖营养指数为29.56,属于贫营养,平、枯水期营养指数分别为35.31,31.56,同属中营养,百花湖整体处于贫-中营养状态;径流输入为百花湖营养盐主要来源。The ecosystem of Baihua Lake is fragile and difficult to recover after destruction.Based on the comprehensive nutritional status index method,the water environment of Baihua Lake was evaluated by monitored physical and chemical parameters in wet season,normal season and dry season.The results showed that the properties of surface water of Baihua Lake were as follow:temperature of 11.2℃-22.5℃,pH value of 7.7-8.4,dissolved oxygenof 5.0-14.9 mg/L,transparency of 0.6-1.9 m,the total nitrogen and total phosphorus of 1.4-4.1,0.030-0.964 mg/L respectively,and the ratio of nitrogen to phosphorus of 14.9-64.3,indicating that the lake was controlled by high nitrogen and phosphorus.Ammonia nitrogen was 0.01-1.85 mg/L.The nutritional status index of Baihua Lake was 29.56 in wet season,showing a poor nutrition state,while the index was 35.31 and 31.56 in normal and dry seasons respectively,showing a middle nutrition state.Baihua Lake is in poor-middle nutrition state overall,and the runoff input is the main nutrient source of Baihua Lake.

关 键 词：水环境 营养状态 综合营养状态指数 喀斯特湖泊 百花湖 

分 类 号：X171[环境科学与工程—环境科学]