CAJ | 학술논문

分别于2013年夏季在江苏省南通市节制闸引水期、引水后与引水前采集不同级别城市河道水样，研究基于闸控管理的城市河网水体中TN、TP、Chl-a和CODMn的分布特征，并运用综合营养指数法对水体富营养化级别进行评价。结果表明，一级河道通吕运河引水后营养级别降低，引水对缓解通吕运河富营养化程度具有一定作用；二级河道通甲河富营养级别显著高于通吕运河（ n＝3， p＝0.003），通甲河在引水期、引水后与引水前水体都属于重度富营养级别，由于同时受长江、通吕运河和海港引河等多水系来水影响，引水后，虽然综合营养指数有降低趋势，但所属营养级别没有改变；三级河道郭里头河营养级别显著高于通吕运河（n＝3，p＝0.02），但与通甲河没有显著差异（n＝3， p＝0.095），引水后，郭里头河营养级别降为中营养，主要是因为长江来水量大，水体交换率高；环城景观河濠河属于轻度富营养，在引水后综合营养指数达到最大，可能与其水系格局复杂有关。
분별우2013년하계재강소성남통시절제갑인수기、인수후여인수전채집불동급별성시하도수양，연구기우갑공관리적성시하망수체중TN、TP、Chl-a화CODMn적분포특정，병운용종합영양지수법대수체부영양화급별진행평개。결과표명，일급하도통려운하인수후영양급별강저，인수대완해통려운하부영양화정도구유일정작용；이급하도통갑하부영양급별현저고우통려운하（ n＝3， p＝0.003），통갑하재인수기、인수후여인수전수체도속우중도부영양급별，유우동시수장강、통려운하화해항인하등다수계래수영향，인수후，수연종합영양지수유강저추세，단소속영양급별몰유개변；삼급하도곽리두하영양급별현저고우통려운하（n＝3，p＝0.02），단여통갑하몰유현저차이（n＝3， p＝0.095），인수후，곽리두하영양급별강위중영양，주요시인위장강래수량대，수체교환솔고；배성경관하호하속우경도부영양，재인수후종합영양지수체도최대，가능여기수계격국복잡유관。
Water samples were collected from urban rivers of different levels during , after, and before water diversion through a regulator from the Yangtze River to Nantong City , Jiangsu Province , in the summer of 2013 . The characteristics of distribution of TN , TP, Chl-a, and CODMn in a gate-controlled urban river network were analyzed , and the comprehensive nutrition index method was used to calculate the level of eutrophication .The results show that the trophic level of the first-class Tonglyu Canal declined after the water diversion , indicating that the eutrophication in the Tonglyu Canal can be reduced by water diversion .The trophic level of the second-class Tongjia River was significantly higher than that of the Tonglyu Canal ( n=3 , p=0.003 ) .The Tongjia River had a heavily eutrophic status during , after, and before the water diversion .Although the comprehensive nutrition index showed a declining trend after the water diversion , the trophic status of the Tongjia River did not change , as the river was affected by the incoming water from the Yangtze River , the Tonglyu Canal , and the Haigang River .The trophic level of the third-class Guolitou River was significantly higher than that of the Tonglyu Canal ( n=3 , p=0.02 ) , but showed no significant difference from that of the Tongjia River ( n=3 , p=0.095 ) .After the water diversion , the trophic level of the Guolitou River declined to a medium-eutrophic level , which might have been caused by the high inflow from the Yangtze River and high water exchange rate .The Haohe River , which is a landscape river surrounding the city , had a slightly eutrophic status .The comprehensive nutrition index of the Haohe River reached its maximum level after the water diversion , which might have been caused by the complex drainage pattern .