综合营养状态指数法评价鄞州区水库富营养化程度  

Evaluation of Reservoir Eutrophication in Yinzhou District Based on Comprehensive Eutrophication State Index Method

作　　者：李林衡 郑飞[1] 何春花[1] 周国强[1] 刘文生[1] 王腾飞[1] 吴丹丹[1] 

机构地区：[1]宁波大学地理与空间信息技术系,浙江宁波315211

出　　处：《中国给水排水》2016年第13期75-78,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(41340036)

摘　　要：采用综合营养状态指数法评价叶绿素a(Chl-a)、TN、TP、COD_(Mn)和透明度(SD)等参数的年均和月均变化,用于反映宁波市鄞州区6个水库的富营养程度;并根据各因子在综合营养状态指数中所占权重,对各因子进行比较。结果表明,鄞州区主要供水水库近5年一直处于中营养状态,综合营养状态指数在40左右波动,富营养化处于不稳定状态;鄞州区各水库的富营养化因子所占权重不同,主要影响因子不一,但TN因子是各水库富营养化的瓶颈;鄞州区水库富营养化波动呈显著的季节特征,春季和夏季富营养化程度形成高峰、秋季和冬季次之。The comprehensive eutrophication state index method was adopted to evaluate yearly and monthly state of Chl-a, TN, TP, CODMn, SD and other parameters to describe the eutrophication of the six reservoirs in Yinzhou District. Each factor was compared according to the weights of various fac- tors in the comprehensive eutrophication state index. The results showed that： ① The main water supply reservoirs in Ningbo Yinzhou District were in nutritional status in nearly five years, and the comprehen- sive nutrition level fluctuated in 40, with eutrophication in an unstable state ; ②The weights of eutrophi- cation factors were different in reservoirs in Yinzhou District. The main factors that influence the reservoir were different, but the TN was the choke point of eutrophication of every reservoir; ③ Along with season- al changes, the eutrophication of the reservoirs varied obviously and formed a peak in spring and sum- mer, and autumn and winter took the second place.

关 键 词：饮用水水库 富营养化 综合营养状态指数法 

分 类 号：X824[环境科学与工程—环境工程]