太湖春季水质参数空间格局分布的克里格内插估计

为了解湖泊水质参数的空间格局分布,以太湖为试验区,对其2004年4月26个观测点的15项水质参数,如水温、透明度、叶绿素、DO、pH值、BOD5、CODMn、CODcr、NO2-N、NO3-N、NH3-N、CL^-、SO4^2-、TN和TP进行了统计分析.采用克里格内插方法,估计各项水质参数的空间格局分布.结果直观地反映了各项水质参数在空间上的分布,说明了太湖的污染状况.表明这15种水质参数具有一定的空间相关性,太湖以北部的梅梁湾和五里湖污染最为严重.

Spatial distribution of water quality parameters in Spring in Taihu lake estimated by Kr iging interpolation

In order to analyze the spatial distribution of water quality parameters of lakes. With Taihu lake as the study area, fifteen water quality parameters observed in twenty-six observation stations in April of 2004 were used, and then the concentration of these parameters, water temperature, SD, Ch l-a, DO, pH, BOD5, CODMn, CODCr, NO2-N, NO3-N, NH3-N, CL^-, SO4^2- , TN and TP analyzed. The Kriging interpolation was applied to estimate the water quality parameters spatial distributions. The result can directly reflect the spatial distribution of water quality parameters and the situation of pollution in Taihu lake. It showed that water quality parameters were correlated to some extent. The pollution of Meiliang gulf and Wuli lake located in the north of Taihu lake is the most serious area.