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引用本文:荀尚培,杨元建,何彬方,范伟,张宏群.春季巢湖水温和水体叶绿素a浓度的变化关系.湖泊科学,2011,23(5):767-772. DOI:10.18307/2011.0515
XUN Shangpei,YANG Yuanjian,HE Binfang,FAN Wei,ZHANG Hongqun.Analysis of relationship between spring water temperature and chlorophyll-a in Lake Chaohu. J. Lake Sci.2011,23(5):767-772. DOI:10.18307/2011.0515
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春季巢湖水温和水体叶绿素a浓度的变化关系
荀尚培1,2, 杨元建1,2, 何彬方1,2, 范伟1,2, 张宏群1,2
1.安徽省气象科学研究所, 合肥 230031;2.安徽省大气科学与卫星遥感重点实验室, 合肥 230031
摘要:
根据2007年3-6月的巢湖逐时气象观测资料和水环境监测资料, 分析了水体叶绿素a浓度、水温和气温的时间变化规律以及相互之间的关系.结果表明:水温日变化幅度小于气温日变化幅度, 多项式拟合决定系数较高, 为0.81;水温与水体叶绿素a浓度逐时变化关系不稳定, 线性拟合决定系数变化范围为0到0.91, 平均为0.35;水温日平均与水体叶绿素a浓度日平均的相关性较逐时的相关性要好, 与水温和叶绿素a浓度阈值有关.巢湖东半湖叶绿素a浓度变化与前期单天、累积水温变化密切相关, 而西半湖叶绿素a浓度则与同期水温的相关性好。
关键词:  水温  叶绿素a  巢湖
DOI:10.18307/2011.0515
分类号:
基金项目:安徽省科技攻关项目(06013137B)资助
Analysis of relationship between spring water temperature and chlorophyll-a in Lake Chaohu
XUN Shangpei1,2, YANG Yuanjian1,2, HE Binfang1,2, FAN Wei1,2, ZHANG Hongqun1,2
1.Anhui Institute of Meteorological Sciences, Hefei 230031, P.R.China;2.Key Laboratory of Atmospheric Science and Satellite Remote Sensing of Anhui Province, Hefei 230031, P.R.China
Abstract:
Based on monitoring data of air temperature, water temperature and Chlorophyll-a(Chl.a)in Lake Chaohu from March to June in 2007, the relationship between air temperature, water temperature and Chl.a concentration were analyzed using statisti-cal methods.The results showed that:The daily determination coefficient of determination of quadratic polynomial fit between Ta and Tw was the highest(0.81).The hourly coefficients of determination between Tw and Chl.a concentrations varied in a wide range(0 0.91), and their mean value was 0.35.The correlation between daily Tw and Chl.a concentrations was higher than that of the hourly data.Furthermore, the correlation between Chl.a and cumulative water temperature of some single day was very high in the eastern part of Lake Chaohu while the correlation was low in western part of the Lake Chaohu.However, correlation between day-to-day Chl.a and water temperature was much better in the WCL than that in the ECL.
Key words:  Water temperature  chlorophyll-a  Lake Chaohu
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