Preliminary Study On Eutrophication Characteristic And Potential Of Jing Lake Water Body In Wuhu

In the recent 20 years, it is rapid and stern that the lake reservoir eutrophication pollution condition of our country, the eutrophic0ation has been a prominent environment question already.Comparing the large-scale lake, the research appears relatively weak in the city middle and small scale shallow lake. the city lakes are extremely important regarding the city ecology construction, they take the city infrastructure the important constituent, and they have synthesis functions such as stagnating gathers, excreting flood, water supply, traveling sightseeing and so on.Therefore, it is especially not allow to neglect that the water environment worsening question eutrophication of the city middle and small scale shallow lake. Along with urbanized advancement quickening, it is especially stern that water environment improvement duty.This article takes Jing Lake as an example, analyses the related question of eutrophication.The paper first analyses Jing Lake's eutrophication characteristic mainly from the single factor to the actuation factor,then analyses the water temperature,CODCr,DO,TP,TN,Chla which have close relations with eutrophication.through analyzing the floating algae's ,it is discovered that 1, 5, 7, 9 four months take the blue-green alga as the dominant species, 3,11 two months take the diatom as the dominant species.In this analysis foundation, This paper also attemptes to establish the Rough Collection Mathematical Model, thus discovers the total Phosphorus is the biggest factor to the Jing Lake's eutrophication technical progress, was 35.12%, next for the total Nitrogen factor 24.59%, CHLa 20.16%, then it explains Phosphorus was the restrictive factor to Jing Lake's eutrophication.By using the Index of Comprehensive Nutrition to analyse the eutrophication, it discovers 7,8,9,10 four months TLI(∑) increase in turn, the water quality has leniently the rich nutrition as a whole to the rich nutrition change, it also indicates that the Jing Lake's eutrophication tendency is aggravating. Then this paper analyses the Jing Lake's pollution characteristic of bottom puttyfrom organic matter, nutrient salt, heavy metal and so on.and though the Index of Geoaccumulation to appraise the heavy metal pollution degree to bottom putty, it is found that the pollutant's degree size order is: Pb>Cu>Zn>Cd. After the latent ecology harm appraisal of pollutant,it discovers the Jing Lake overall presents the low ecology risk. Afterwards it analyses the cyclical characteristics of the Jing Lake water body's Nitrogen Phosphorus. Then it analyses Jing Lake's eutrophication potential from CHLa with other target correlation, index of correlation cluster,the result is that Jing Lake's eutrophication t is developing.Finally, it is the summary to the paper.It emphasizes understanding to Jing Lake's ecology function, proposes suggestions from strengthening inside and outside aspects, controling source of pollution, ecological repairing technology and so on to the Jing Lake eutrophication.