Fagaceae is one of the most widely and oldest plant groups. This study has conducted tree measurement survey in sample plots. It evaluated the quadrat biomass and the ecological environment factors of three timber plantations of 27 years old, which were Castanopsis kawakamii, Quercus acutissima and Castanopsis hystrix. In order to provide some references for the scientific assessment and project investment decision of the three plantations, forest ecological benefit, economic benefit and comprehensive benefit have been evaluated comprehensively by mathematical model in growth process. Fifteen indexes in three levels of ecological, economic and social benefits were chosen to build the comprehensive benefit evaluation system of the three plantations of Fagaceae. In the criterion layer, the weight coefficients of ecological, economic and social benefit were 0.401 7,0.455 4 and 0.175 5,respectively. According to weight coefficients and value calculation of various indexes, the score of comprehensive benefit of Quercus acutissima plantation was 3.222 3,which was higher than that of Castanopsis hystrix (3.107 6) and Castanopsis kawakamii (2.893 0).%壳斗科(Fagaceae)植物作为地球上分布最广泛、最原始的植物类群之一,具有较高的生态学价值.本研究通过对 27a生的青钩栲(Castanopsis kawakamii)、麻栎(Quercus acutissima)、红锥(Castanopsis hys trix)人工林进行标准地测树调查及样方生物量、生态环境因子测定,采用生长过程数学建模及层次分析方法等开展林分生态效益、经济效益和综合效益评价分析. 结果表明,在壳斗科人工林综合效益评价体系分析中,选取生态、经济和社会效益3个层次共15个指标,采用层次分析法对两树种人工林建立综合效益评价体系.在准则层中,生态、经济和社会效益指标权重分别为0.401 7、0.455 4、0.175 5.通过评价指标权重及各指标分值计算,麻栎人工林的综合效益评分(3.222 3)>红锥林(3.107 6)>青钩栲林(2.893 0).该体系可为壳斗科人工林的科学评价、项目投资决策等提供参考依据.
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