摘要
利用在2010年3月～2011年2月江西省25个中小型湖泊水质监测指标的分析数据，采用综合营养状态指数（TLI）法对调查湖泊进行各季节和全年的营养状态评价，并分别计算在各季节和全年内调查湖泊中发生富营养化的概率。在全年营养状态评价的基础上，运用Bootstrap方法，寻找在不同营养状态下的置信区间，并推断富营养化控制指标的建议值。结果表明，在被调查的湖泊中，春、夏季发生富营养化的概率是接近的，秋季是最高的，冬季是最低的。在春、夏和冬季时，调查湖泊的营养状态以中营养为主；在秋季时，中营养状态湖泊所占比例下降，富营养状态湖泊所占比例上升。在全年中，富营养和中营养状态湖泊所占比例分别为32％和68％。江西省中小型湖泊富营养化控制指标透明度（SD）、总磷（TP）、叶绿素a（Chl a）和高锰酸盐指数（CODMa）等的建议值，分别为0．44m、0．05mg／L、10．00mg／m3和2．70mg／L。为湖泊富营养化的分区控制与治理提供基础资料和理论依据。
Jiangxi province lies in the southern bank of the middle and lower reaches of the Yangtze River in China.It belongs to eastern plain lake area and is the highest one of the provinces for the owing rate of fresh lakes.In addition to the overlarge lake for Poyang Lake,the remaining 90% are small or medium size lakes which area is less than 100 km2.The 25 investigated lakes, where the total area is nearly 800 km2 , are distributed in the mainstream of Yangtze River system,Xiu River system and Poyang Lake system.The 175 monitoring points were set in the 25 investigated lakes, and the quarterly water quality indexes including chlorophyll-a（Chl, a）, transparency （SD）, permanganate index （CODMa） , total phosphorus （TP） and total nitrogen（TN） were monitored and analyzed between March 2010 to February 2011 for 25 small or medium size lakes in Jiangxi province.According to the data analysis of above water quality monitoring indexes, the seasonal and annual trophic state of investigated lakes was evaluated by comprehensive eutrophication state index （TLI） method and the probability of eutrophication was calculated in every season and the whole year.On the basis of annual trophic state, the confidence interval was be found in different trophic state using Bootstrap method, and then the recommended values for eutrophication control indicators were be inferred.The results indicated that the probability of eutrophication for investigated lakes in spring and summer was near,autumn was the highest, and winter was the lowest. In spring, summer and winter,the trophic state of investigated lakes was mainly on mesotropher; in autumn, the proportion of mesotrophic lakes was decreased and the proportion of eutrophic lake was increased.In the whole year,the proportion of eutrophic and mesotrophic lakes were 32% and 68%, respectively. The recommended values for eutrophication control indicators of SD, TP, Chl. a and CODMn for small or medium size lakes in Jiangxi province should be respectively at 0. 44 m, 0. 05 mg/L, 10. 00 mg/m3 and 2.70 mg/L. This research provides basic data and theoretical basis for eutrophication regionalization control in our country.
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2013年第11期1493-1497,共5页
Resources and Environment in the Yangtze Basin
基金
国家水体污染控制与治理重大专项(2009ZX07106-001)
关键词
江西省
中小型湖泊
富营养化
控制指标
建议值
Jiangxi province
small and medium size lakes
eutrophication
control indicators
recommen- ded values
