Spatio-temporal Change of Water Chemical Elements in Lake Dianchi, China
Lake Dianchi is a large lake which is listed in the ”Three Important Lakes Restoration Act in China”.The water quality has deteriorated from class Ⅱ in the 1970” s to class Ⅴ today,with an attendant increase in the frequency and intensity of blue algae blooms formation.From 2003 to 2006,a water quality monitoring program was implemented for eight regional zones in Lake Dianchi.It monitored the following substances including C,N,P,S,Ca,Mg,Fe,K,Na,Zn,Cu,Mn,Cl,together with water temperature,pH,total hardness and total salt content.Data was analyzed using regression models to determine the impacts of these substances and conditions for the formation of blue algae bloom,and to assess the relationship of them with Chlorophyll a.The results showed a significant relationship between Chlorophyll a and C,P,N,Cl,Fe,Mg,water temperature,pH,total hardness and total salt.There was no significant relationship between Chlorophyll a and TMn,Mn,SO42-,STMn,Ca,Zn,K,Na and Cu.The study showed that the concentration of Chlorophyll a in different regions of the Lake was different,indicating that the mix of chemicals in a region has a different impact on pollution levels throughout Lake Dianchi.
Chemical element eutrophication Lake Dianchi spatio-temporal change
Liu zhonghan Liu xiaohai He bin Nie jufen Peng jiangyan Zhao lei Dua
Yunnan Institute of Environmental Science, Kunming 650034, P. R. China
国内会议
武汉
英文
289-294
2009-11-01（万方平台首次上网日期，不代表论文的发表时间）