摘要
选用浮游植物生物量(BA)等5个生态系统健康评价指标,通过计算各指标指数和加权综合指数法对意大利西西里岛30个湖泊的健康做出分级.然后用粗糙集理论对5个指标进行筛选处理,又重新计算加权综合指数和分级.结果表明:浮游动物生物量(BZ)指标在湖泊健康分级中没有作用,是多余指标;粗糙集理论与健康指数相结合有重要意义.
The paper chooses phytoplankton biomass(BA)ect.5 ecosystem health index to classification,through calculating ecosystem health index(EHI)and determining synthesis weighting factors based on data from 30 lakes in Italy.Using rough-set theory to select and treat to 5 ecosystem health index,and calculating synthesis weighting factors and classification.The results showed that zooplankton biomass(BZ)has no effect on lakes healthy classification;Rough- set theory combined with healthy index have an important fun...
出处
《生物数学学报》
CSCD
北大核心
2008年第2期337-344,共8页
Journal of Biomathematics
基金
南阳师范学院科研资助项目(nynu200729)
关键词
粗糙集
湖泊生态系统
健康评定
指数
Rough-set theory
Lake ecosystem
Health assessment
Index
