巢湖总有机碳的春夏季节变化及其与环境因子的关系

文章分析2012年2月至7月对巢湖总有机碳(TOC)的春夏季节变化及空间分布特征,探讨TOC与环境因子(包括水温(WT)、透明度(SD)、溶解氧(DO)、pH值、总氮(TN)、总磷(TP)、叶绿素a(Chl a)等)之间的关系.结果表明:2012年2月~7月间巢湖TOC的浓度呈逐月递增趋势,7月份达到最大值,浓度范围为37.27~60.98 mg/L.Perason相关分析显示(n=59):巢湖TOC与WT(r=0.617,p0.01)、pH值(r=0.589,p0.01)、TP(r=0.653,p0.01)、Chl a(r=0.659,p0.01)之间均呈显著的正相关,与SD(r=-0.462,p0.01)呈显著负相关,与DO和TN没有相关性.

Seasonal Variations of Total Organic Carbon in Spring and Summer and its Correlation with Environmental Factors in Lake Chaohu

In this paper,seasonal variations and spatial distribution of total organic carbon（TOC）concentra-tions were studied from February to July 2012 in lake Chaohu,and the relationships between TOC and envi-ronmental factors （such as water temperature,transparency,dissolved oxygen,pH,total nitrogen,total phos-phorus,Chl a）were discussed.The results showed that TOC concentrations increased gradually during Febru-ary and July 2012,and ranged between 37.27 mg/L and 60.98 mg/L.The maximum of TOC concentration ap-peared in July.According to perason’s correlation analysis （n=59）,positive correlations between TOC and WT（r=0.617,p〈0.01）,pH（r=0.589,p〈0.01）,TP（r=0.653,p〈0.01）,Chl a（r=0.659,p〈0.01）were observed, while it had negative correlation with transparency （r=-0.462,p〈0.01） and no significant correlation with DO and TN.