新安江水库有完整监别数据记录开始于1985年,但2001年后才有浮游植物密度和叶绿素a数据.文章利用2001-2009年透明度和叶绿素a监测数据,采用SPSS统计软件拟合回归方程,再根据2001年以前的透明度数据,反演相对应的新安江水库浮游植物叶绿素a浓度.结果表明,新安江水库1988、1990年浮游植物生物量较低,而1993、1996、2009年浮游植物生物量分别出现峰值,2000年以前浮游植物生物量波动剧烈,2000年以后基本呈上升趋势,特别是2005年以后上升趋势非常明显.%The Xin'anjiang reservoir had its environmental monitoring data record sincel985, but it had not launched the monitoring of phytoplanktun density and tlilomphjll-a ( Chla) before 2001 , In this paper, the regression equation between chlomphyll-a( Chla)and Transparency was calculated by linear regression, based on the monthly monitoring data in the .xin'anjiang reservoir from 2001 to 2009, then we inverted chlomphylJ-a by the calculated regression equation and monthly monitoring data of Transparency in the xin'anjiang reservoir from 1985 to 2000. It turned out to be that the Xin'anjiang reservoir had a lower level of phytoplankton biomass in 1988 and 1990, instead, it had a higher level of phyloplankton biomass in 1993,1996 and 1990, the phytuplanklon biumass was volatile before 2000, instead, it had amipward trend after 2000, especially 2005.
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