CAJ | 학술논문

通过对2011年4—5月南通市城区主要河流水体叶绿素a含量及其影响因子的监测和对12月濠河沉积物叶绿素a含量及其相关环境因子的实验分析，探讨了水体、沉积物中叶绿素a含量与环境因子的关系．结果表明：水体叶绿素a含量变动于6．4～293．9μg，L之间，主要与水体pH值有关，而与总磷、总氮等营养盐含量及溶解氧、电导率和温度的相关性不明显或不相关；沉积物中的叶绿素a含量波动于5．8～69．0μg／g，主要与含水率有关，这表明沉积物中叶绿素a含量主要受上覆水体叶绿素a转移、渗入的控制；此外。沉积物颗粒粒径大小、烧失量等对沉积物中叶绿素a的含量也有一定的影响．
통과대2011년4—5월남통시성구주요하류수체협록소a함량급기영향인자적감측화대12월호하침적물협록소a함량급기상관배경인자적실험분석，탐토료수체、침적물중협록소a함량여배경인자적관계．결과표명：수체협록소a함량변동우6．4～293．9μg，L지간，주요여수체pH치유관，이여총린、총담등영양염함량급용해양、전도솔화온도적상관성불명현혹불상관；침적물중적협록소a함량파동우5．8～69．0μg／g，주요여함수솔유관，저표명침적물중협록소a함량주요수상복수체협록소a전이、삼입적공제；차외。침적물과립립경대소、소실량등대침적물중협록소a적함량야유일정적영향．
Through monitoring the content of chlorophyll-a in river water and its affecting factors in the main rivers of urban area in Nantong city and the experimental analyzing the content of chlorophyll-a in the Haohe River sediments and its affecting factors in 2011, the relationship between the environmental factors and the content of chlorophyll-a in river water and sediments are probed. The results show that the content of chlorophyll-a in river water varies in 6.4-293.9 μg/L, which is mainly affected by pH and less related with the content of total phosphorus, total nitrogen, dissolved oxygen, conductivity and water temperature. The content of chlorophyll-a in river sediments fluctuates be- tween 5.8-69.0 μg/g, which is mainly affected by water content. This shows that the content of chlorophyll-a in river sediments is controlled by the content of chlorophyll-a in overlaying water transported and penetrated into sediments. Moreover, the content of chlorophyll-a in river sediments is also influenced by the grain size of sedimentary particles and loss of ignition.