四川盆地西缘山地退化天然林种群结构研究  

Study of Population Structure and Spatial Distribution Pattern of Degenerate Natural Forest of Western Mountain Area in Sichuan Basin

作　　者：伍洪营[1] 陈东立[2] 

机构地区：[1]凉山州林业调查规划设计院,四川西昌615000 [2]四川农业大学城乡建设学院,四川都江堰611830

出　　处：《绿色科技》2013年第1期116-119,共4页Journal of Green Science and Technology

摘　　要：根据四川省彭州市天台山林场天然林野外调查的21个样地资料,对四川盆地西缘山地退化天然林种群结构进行了研究分析。结果表明:四川盆地西缘山地退化天然林物种组成主要由48科,76属,90种组成。乔木树种重要值IV>5的有7个种群,分别为红桦、房县槭、褐毛溲疏、大叶椴、大叶腊莲绣球、多脉榆、尾叶樱,这7种乔木树种组成退化天然林乔木树种优势种群。优势种群径级结构分析,房县槭、褐毛溲疏、大叶腊莲绣球、多脉榆,更新状况较好,属增长性种群;红桦更新状况较差,属于衰退型种群,大叶椴、尾叶樱,属于稳定性群落。Based on the survey data of 21 natural forest plots from the Tiantaishan Mountain of Pengzhou,Si- chuan Province, this article analyzes the population structure of the degenerate natural forest of western mountain area in Sichuan Basin. The results show that the degenerate natural forest species mainly consist of 48 families,76 genera and 90 species. There are seven tree species which importance value（IV）〉5,including Betula albo-- sinensis Burk, Acer franchetii Pax, Deutzia pilosa Rehd, Tilia nobilis Rehd, Hydrangea strigosa, Ulrnus castaneifolia Hemsl and Cerasus dielsiana. From the diameter class structure analysis of the dominant species,the Acer franchetii Pax, Deutzia pilosa Rehd, Hydrangea strigosa and Ulmus castaneifolia Hemsl have updated in good condition, belonging to an increase population;Betula albo--sinensis Burk has updated was poor,belonging to a recession--type populations;Tilia nobilis Rehd and Cerasus dielsiana belong to the stable population.

关 键 词：退化天然林 结构 优势种 

分 类 号：S7[农业科学—林学]