基于模糊逻辑的裂腹鱼幼鱼生境适宜度指数分析  

Analysis on habitat suitability index of schizothorax based on fuzzy logic

作　　者：韩京成[1,2] 黄应平[1] 袁喜[1] 刘国勇[1] 马直科 

机构地区：[1]三峡大学AlanG．MacDiarmid艾伦·麦克德尔米德再生能源研究所,湖北宜昌443002 [2]华北电力大学能源与环境研究院,北京102206 [3]四川省凉州德昌环洁有限公司,四川西昌615500

出　　处：《人民长江》2011年第3期65-68,78,共5页Yangtze River

基　　金：国家自然科学基金(50639070,50979049,20877048);湖北省青年杰出人才基金资助(2005ABB030)

摘　　要：通过模糊逻辑的方法建立了雅砻江裂腹鱼幼鱼时期的生境适宜度指数模型。根据野外调查和室内实验结果,结合有经验的鱼类学专家的模糊知识建立了关于生境因子和幼鱼生境适宜度模糊集合的隶属度函数和模糊推理规则。模糊集合根据水温、流速和溶解氧3个变量因子,以＂if-then＂的规则语句实现了生境特性和适宜度的联系。根据模型分析,得出溶解氧是裂腹鱼幼鱼重要的生境因子,其次是温度和流速。单因子变化引起的相对极端环境对鱼类适宜度有显著影响。裂腹鱼对水温、溶解氧和流速的最适范围分别为11℃~19℃,5.75~10 mg/L和0.1~0.65 m/s。Habitat suitability index model is established for schizothorax in the Yalong River based on fuzzy logic.Through field survey and laboratory experiment and in the combination of fuzzy knowledge of experienced fish specialists,fuzzy membership function and fuzzy inference criterion of fuzzy set for habitat factor and habitat suitability index of young schizothorax are established.The fuzzy set is defined from water temperature,flow velocity and dissolve oxygen and the relation of habitat characteristics and suitability index is realized by computer language statement of ＂if-then＂.The model analysis shows that the dissolve oxygen is an important habitat factor of young schizothorax,followed by the water temperature and flow velocity;the relative extreme environment caused by single factor variation has obvious effects on fish habitat suitability.

关 键 词：模糊逻辑 裂腹鱼 生境适宜度 雅砻江 

分 类 号：X17[环境科学与工程—环境科学]