|关键词: 高宝湖群 富营养化 共性 差异性
|Characteristic Analysis of Eutrophication on Lakes in Gaobao Water Resources Division in Jiangsu Province
XIA Ting， CHEN Jing， LONG Jian， HUANG Yuying， DI Wenliang1,2
1. College of environment， Nanjing University of Technology， Nanjing，Jiangsu 211816， China;2. Jiangsu Province Hydrology and Water Resources Investigation Bureau， Nanjing， Jiangsu 210029， China.
|The characteristics of similarity and heterogeneity on eutrophication effects were analyzed， which were found in the Gaoyou Lake， Baoying Lake， Shaobo Lake and Baima Lake in Gaobao Water Resources Division in Jiangsu Province. The results showed that 4 lakes were in status of mesotrophication or mild eutrophication from 2009 to 2014， and values of Comprehensive Nutrition State Index fluctuated within a year， with a better nutrition status in flood season than that in dry season. Values of main nutrition factors in 4 lakes were significantly different， especially TN and SD， and chlorophyll a presented different levels in the temporal distribution， with a risk of algae outbreak in spring and summer. Correlations between chlorophyll a concentration and environmental factors were different in these lakes， but significantly positive correlations between chlorophyll a concentration and water temperature， total phosphorus， were found in the Baoying Lake， Baima Lake， and lakes in Gaobao Water Resources Division analyzed in general.The total phosphorus might be the limited nutrition factor for the growth of algae. As for the trophic characteristics， although there were some differences in 4 lakes， the Baoying Lake was more similar with the Baima Lake in general， and different from the Gaoyou Lake. The Shaobo Lake was more similar with the Gaoyou Lake， as well as some similarities with the Baoying Lake and Baima Lake.
|Key words: Lakes in Gaobao Eutrophication Similarity Heterogeneity