TANG Tao, LI Dao-feng, LIU Rui-qiu, CAI Qing-hua. STUDIES ON TROPHIC STATES OF WATERS IN YUJIANG COUNTY, JIANGXI PROVINCE[J]. ACTA HYDROBIOLOGICA SINICA, 2002, 26(4): 357-362.
Citation: TANG Tao, LI Dao-feng, LIU Rui-qiu, CAI Qing-hua. STUDIES ON TROPHIC STATES OF WATERS IN YUJIANG COUNTY, JIANGXI PROVINCE[J]. ACTA HYDROBIOLOGICA SINICA, 2002, 26(4): 357-362.

STUDIES ON TROPHIC STATES OF WATERS IN YUJIANG COUNTY, JIANGXI PROVINCE

  • Received Date: July 09, 2001
  • Rev Recd Date: November 29, 2001
  • Published Date: July 24, 2002
  • By means of trophic state index(TSI)and its modificator(TSIm)in which algal chlorophyll a(Chla), water transparency(Sd)and total phosphorus(TP)are used as evaluation factors, the continuous numerical classification for the trophic states of three waterbodies(Dongtang, Wuhu and Xiantang reservoirs)of 1998 and 1999 in Yujiang county, Jiangxi province were obtained. The results indicated that all the three reservoirs were in the state of eutrophication. The values of TSI and TSIm of Dongtang reservoir were 69 and 70 respectively, which means that the trophic state of this reservoir was highly eutrophicated and was the worst among the three reservoirs. Although Wuhu reseroirs got the lowest values of TSI and TSIm, they also reached 60 respectively. Thereafter principal component analysis(PCA)was carried out to explore which factors(including K++Na+、PO4-P、TP、NO2-N、NO3-N、NH4-N、TN、SiO2、pH、COD)were specially responsible to the water qualities of these waterbodies. The results showed that NH4-N was the most important factor to the first principal component, which weighted 0.986, and NO2-N was the second weighted one with the corresponding value of 0.909, so it can be inferred that nitrogen was the main contributor to the first principal component. With the loading of 0.837, COD dominated the second principal component. Studies on the data of September of 1999 showed that COD acted as the most important role in the water trophic state of three reservoirs. Corresponding analysis suggested that it was local agricultural system that resulted in superfluous organic fertilizers, which had been poured in these reservoirs and eutrophicated the waters. This result could be important to local agriculture and reservoir managements.
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    赵其国,石华,吴志东.红黄壤地区农业资源综合发展战略与对策[C].红壤生态系统研究(第一集).北京:科学出版社,1992[2] 蔡庆华.湖泊富营养化综合评价方法[J].湖泊科学,1997,9(1):89-94[3] 蔡庆华.武汉东湖富营养化的综合评价[J].海洋与湖沼,1993,24(4)335-339[4] 赵斌、蔡庆华,黎道丰,等.岱海水质咸化过程中营养状况的变化[J].水生生物学报,2000,24(5):509-513[5] Carlson R E. A trophic state index for lakes [J].Limnol, Oceanogr., 1997,22(2):361-369[6] Aizaki M., et al. Application of modified Carlson's trophic state index to Japanese lakes and its relationships to other parameters related to trophic states [J]. Res. Rep. Natl. Inst Environ. Stud., 1981,23:13-31[7] Goda T. Comprehensive studies on the eutrophication of freshwater areas(XI): summary of researches [J]. The National Institute for Environmental Studies, 1981,(27):59-71[8] 金相灿,屠清瑛.湖泊富营养化调查规范(第二版)[M].北京:中国环境科学出版社,1990[9] 余世孝.数学生态学导论[M].北京:科学技术出版社,1985[10] 刘建康.高级水生生物学[M].北京:科学出版社,1999:376-400[11] 李春喜,王文林,陈士林等.生物统计学[M].北京:科学出版社,1998[12] 鲁如坤,时正元,钱承梁等.中亚热带低丘红壤农田生态系统养分平衡特征研究-Ⅰ农田养分循环[C].红壤生态系统研究(第四集).南昌:江西科学技术出版社,1997[13] 姜萍,许苏葵,潘文斌.三峡科技移民示范区及毗邻地区水体营养状况的数量分析[J].水生生物学报,2000,24(5):464-467[14] 蔡庆华,刘瑞秋,黎道丰等.黄淮海平原封丘试区水体营养状况的综合评价[J].湖泊科学,1992,4(2):46-51[15] 蔡庆华,刘建康.人口增长与渔业发展对武汉东湖水质的影响[J].水生生物学报,1994,18(1):87-89[16] 蔡庆华.武汉东湖浮游植物水华的多元分析[J].水生生物学报,1990,14(1):22-31

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