北缘地区柑桔生态区划模糊决策系统  

Fuzzy decision system for ecological distribution of citrus in north-cultivated-marginal area

作　　者：朱立武[1] 李绍稳[1] 孔娟娟[1] 贾兵[1] 

机构地区：[1]安徽农业大学园艺系,合肥230036

出　　处：《应用生态学报》2003年第4期502-506,共5页Chinese Journal of Applied Ecology

基　　金：安徽省"九五"攻关资助项目 ( 99110 0 9) .

摘　　要：以年平均极端最低气温、活动积温、最冷月平均气温、年平均气温等作为区划决策的重要指标 ,综合年降水量、最低气温≤ - 9℃年平均日数及地貌与海拔、水体调节、冷风屏障和土壤营养丰度、pH值等立地条件 ,建立了北缘地区柑桔生态区划决策系统 .引入L R型模糊数 ,确立了模糊识别模式 ,并把模糊推理模型放在知识库里 ,将精确推理与模糊推理置于同一系统中进行复合推理 ,使决策系统具有更广泛的实用性 .以安徽柑桔生态区划为例 ,对系统进行了验证 .本系统的开发为北缘地区发展柑桔生产提供了决策工具 .The fuzzy decision system for ecological distribution of citrus in north-cultivated-marginal area was established by using the data of mean extreme low temperature, accumulated active temperature (≥12.5℃), mean temperature in coldest month, annual mean temperature integrated with annual precipitation, days with mean extreme low temperature below -9℃,physiognomy, elevation, inland water body, cold air barrier , and soil nutrition and pH value. The complex reasoning model with imprecision was used in the decision system by introduction of L-R fuzzy number and recognition formula, which made the decision system have a wide range of application in practice. An example of applying the decision system was tested in Anhui province. The result showed that the development of the decision system would provide a useful tool for the decision of the ecological distribution of citrus in north-cultivated-marginal area.

关 键 词：柑桔 生态区划 模糊 决策系统 

分 类 号：S666[农业科学—果树学]