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Position: Home > Articles > Assessment of Eutrophication and Balance of N and P in Changshou Reservoir Journal of Soil and Water Conservation 2005,19 (2) 73-75+109

重庆长寿湖富营养化评价及氮磷平衡研究

作  者：
杨志敏;熊海灵;张晟;张可;魏世强
单  位：
西南农业大学资源环境学院;西南农业大学信息学院;重庆市环境科学研究院
关键词：
长寿湖;富营养化;氮磷平衡
摘  要：
利用营养状态卡森指数和综合营养状态指数评价长寿湖富营养状况,结果表明各监测点均达到富营养化水平。长寿湖富营养化主要影响因子氮磷的输入输出研究结果为:氮输入总量7914 6t/a ,主要来源为上游来水,占总量约70 % ;磷输入总量5 91 84t/a ,主要来源为农田径流,占总量约4 7% ;氮磷输出量分别为2 4 19 5t/a和12 0 2t/a,截留率分别为6 9 4 %和79 7%。结合该地的实际情况,指出了防止湖泊富营养化加重,当务之急为控制龙溪河上游水源污染物入湖负荷
译  名：
Assessment of Eutrophication and Balance of N and P in Changshou Reservoir
作  者：
YANG Zhi-min~(1,2), XIONG Hai-ling~3, ZHANG Sheng~4, ZHANG Ke~4, WEI Shi-qiang~(1,2) (1.College of Resources and Environment, Southwest Agricultural University, Chongqing 400716; 2. Chongqing Key Lab of Agricultural Resources and Environment, Chongqing 400716; 3.College of Information, Sourthwest Agricultural University, Chongqing 400716; 4.Chongqing Academy of Environmental Science, Chongqing 400020)
关键词：
Changshou Reservoir; eutrophication; balance of N and P
摘  要：
The state of eutrophication of Changshou Reservoir has been evaluated using Garlson model and synthetical nutrition state index. The results reveal that the water quality at all monitoring sites have become eutrophication. The study on the balance of N and P indicate that the total input amount of N is 7 914.6 t/a, 70% of which are from the upper-stream, and the P input is 591.84 t/a, with runoff being the main source, accounting for 47.0% of the total; The outputs of N and P are 2 419.5 t/a and 120.2 t/a, respectively, suggesting that the rates of retained N and P reached to 69.4% and 79.7% respectively. In order to prevent the aggravation of eutrophication, measures have to be taken to decrease the input of N and P from the upper-stream of Longxi River.

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