鲁南采煤塌陷水域渔业生态环境状况研究

Research on Fishery Ecological Environment Condition of Southern Shandong Subsided Water Area

通过对不同塌陷水域(大水面、大池塘和精养池塘)水质的分析,研究其总氮(TN)、氨氮(NH4+-N)、硝态氮(NO3--N)、亚硝态氮(NO2--N)、总磷(TP)、p H、溶解氧(DO)、化学耗氧量(COD)、透明度(SD)、叶绿素a(Chl-a)等水质理化及营养指标,并采用综合营养状态指数法(TLI)分析评价其富营养化水平。结果表明:该塌陷水域受到了不同程度的污染,各项指标基本处于Ⅲ类水及以下的标准,营养盐具有随季节变化的特征;水域的富营养水平均处于轻度富营养化以上。

Through analyzing the water quality of different subsidence waters（large water,pond andaquiculture pond）,the total nitrogen（TN）,ammonia nitrogen（NH4＋-N）,nitrate nitrogen（NO3--N）,and nitrate（NO2--N）,total phosphorus（TP）,p H value,dissolved oxygen（DO）,chemical oxygen consumption（COD）,transparency（SD）,chlorophyll a（Chl-a） and other physical and chemical water quality and nutrition indicatorswere studied,and the eutrophication level was evaluated using comprehensive nutrition state index（TLI）.Results showed that the subsidence waters was suffered different level contamination,the indicators wasbasically bellow class Ⅲ water standards,nutrient has the characteristics of changes with the seasons;theeutrophication level of waters was all above moderate eutrophication.