检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:徐振国[1,2] 郭起荣[1] 冯云[1] 黄大勇[2] 李立杰[2] 孙立方[1] 王青[1]
机构地区:[1]国际竹藤网络中心,北京100102 [2]广西林业科学研究院,广西南宁530001
出 处:《江西农业大学学报》2012年第2期317-323,共7页Acta Agriculturae Universitatis Jiangxiensis
基 金:"十二五"国家科技支撑计划专题(2012BAD23B05)
摘 要:对斑竹林的调查结果表明:不同林分类型斑竹林的胸径、株高、枝下高、秆重、整齐度、均匀度6个结构因子差异显著,立竹密度、壁厚因子差异不显著;提出优良林分"密度11 000株/hm2、胸径5 cm、株高11 m、枝下高4 m、秆重8 kg,林相整齐、均匀"的结构标准;立竹胸径、地径、株高、枝下高、秆重因子间相关显著;株高、枝下高、胸径、全重、秆重和均匀度是林分结构的主成分,贡献率69.6%。The investigation results of Ph.reticulata CV.Lacrima-deae Keng et Wen show that:there are significant differences in six structure factors such as diameter at breast height,plant height,under branch height,culm weight,uniformity and evenness in different types of Phyllostachys bambusoides f.lacrima-deae Keng f.et Wen.Whereas the differences in Stand density and bamboo wall thickness factor are not significant.Therefore,the excellent stand structure standard is "density 11 000 plants/hm2,diameter at breast height 5 cm,plant height 11 m,under branch height 4 m,and culm weight 8 kg,and uniform forest appearance".The correlations among the factors of diameter at breast height,ground diameter,plant height,under branch height,leaf weight and full weight are remarkable.The principal components of stand structure include plant height,under branch height,full weight,culm weight and evenness,the contribution rate is 69.6%.
分 类 号:S795.7[农业科学—林木遗传育种]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.4