摘要
为了准确评价湖泊所处的营养状态,进而为湖泊富营养化的防治提供科学依据,首次提出了基于分形理论的湖泊富营养化的评价方法。该方法通过计算单个水质指标的分维数,由最大似然分类原则确定单个水质指标的评价分维指数,并采用加权平均法求算湖泊富营养化多个水质指标的综合评价级别。经全国30个湖泊实测水质资料的验证,分形评价方法具有计算精度较高、方法简单、计算工作量小的特点,为湖泊富营养化评价提供了一种较好的新方法。
For the sake of accurate evaluation of the alimentation estate of lakes, so as to provide scientific basis for the prevention of lake eutrophication, this paper brings forward the evaluating method for lake eutrophication based on fractal theory for the first time. Through calculating the fractal dimension of single index of water quality,confirming the fractal dimension exponent evaluation of the index of single water quality with the maximum likelihood classification principle, and adopting weighted average value this method calculats the level of the colligate estimation of multi - index of water quality of the lake eutrophication. Validated by the measurement data of 30 lakes in the country and the method possess a higher presision calculation. The method is very simple with small calculation workload. In the estimation of lake eutrophication provides a rather better new method.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2005年第6期925-929,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
教育部重点科技项目(205085)
关键词
湖泊富营养化
分形理论
分维数
评价
lake eutrophication
fractal theory
fractal dimension
estimation
