摘要
分别于2014年夏季7月和冬季12月对鄱阳湖蝶形水域的9个湖泊进行了采样,并对湖泊水质基础性指标TN、TP、NH_3-N、NO_3^--N、NO_2^--N、溶解性磷酸盐、TOC、COD_(Mn)和叶绿素a进行了测定与分析。据此同时运用单因素评价法、均值型指数综合评价法和营养状态指数法对鄱阳湖蝶形水域的地表水水环境的污染现状和污染程度进行了评价,以更全面和准确地反映鄱阳湖蝶形水域的水质状况。结果显示:(1)鄱阳湖蝶形水域水质总体符合GB3838-2002III类水标准;(2)7月水质总体优于12月水质。12月总氮含量和总磷含量基本都高于7月,叶绿素a含量除中湖池12月值略低于7月外,其它点位12月值均高于7月。7月总氮值为0.6~1.3 mg/L,总磷值为0.02~0.15 mg/L,叶绿素a为2.2~6.7 mg/L;12月总氮值为0.6~2.0 mg/L,总磷值为0.04~0.19 mg/L,叶绿素a为3.8~34.7 mg/L;(3)7月和12月水质营养状态介于中营养和轻度富营养,水体主要污染物质为总氮和总磷。7月蚌湖营养状态为轻度富营养,其它点位为中营养,12月除常湖、梅溪湖和大汊湖营养状态为中营养,其它点位均为轻度富营养;(4)位于南部的象湖、常湖、白沙湖和大汊湖水质整体较其它蝶形湖泊差,主要是受到工业废水、生活污水和农业面源污染的赣江和饶河的污染输入影响所致。基于以上调查测试结果提出保护和改善鄱阳湖水环境的可行性措施,以促进鄱阳湖蝶形水域水资源的开发利用,实现经济与环境及资源的协调可持续发展。
The water samples of nine lakes in butterfly waters of the Poyang Lake were collected in July and December 2014, then some basic water quality indexes of lake including TN, TP, NH3-N, NO3- -N, NO2- -N, soluble phosphate, TOC, CODM, and Chl. a were measured and analyzed. Based on these data, the evaluation method of single factor, comprehensive evaluation by average indexes and the method that assesses the nutritional status of lakes were applied simultaneously to assess the pollution status and pollution level of surface water in butterfly waters of Poyang Lake, and to more entirely and more accurately reflect the water quality of butterfly waters of Poyang Lake. The results showed that ： （ 1 ） the water quality of butterfly waters of Poyang Lake in July and December 2014, as a whole, met the third-class water standard called GB3838-2002; （2） the water quality in July was better than that in December on the whole. The total nitrogen and total phosphorus concentrations in December were mostly higher than those in July. The chlorophyll a concentrations in December were all higher than those in July, with an exception that the chlorophyll a concentrations in Zhonghu Lake in December was slightly lower than that in July. In July, total nitrogen was between 0.6-1.3 mg/L, total phosphorus was between 0.02-0. 15 mg/L and chlorophyll a was between 2.2-6.7 mg/L. In December, corresponding concentrations were 0. 6-2.0 mg/L, 0. 04-0. 19 mg/L and 3.8-34.7 mg/L, respectively; （3） the nutrient status in July and December was between mesotrophic and light eutrophic. The main pollutant in the butterfly waters of Poyang Lake was total nitrogen and total phosphorus. In July, the nutrient status of Bang Lake were lightly eutrophic but other lakes were mesotrophic. In December, the nutrient status of Chang Lake, Meixi Lake and Dacha Lake were mesotrophic while other lakes were lightly eutrophic; （4） as a whole, the water quality of Xiang Lake, Chang Lake, Baisha Lake and Dacha Lake in the south of Poyang Lake were
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2017年第8期1189-1198,共10页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金项目(31270746)
江苏省六大人才高峰(2013-JZ-014)
住房和城乡建设部科学技术项目计划(2016-R2-068)
江苏省高校优势学科建设工程资助项目~~
关键词
鄱阳湖
蝶形水域
水环境质量评价
营养状态评价
Poyang Lake
butterfly waters
assessment of environmental quality of water
assessment of nutri-tional status
