晋冀北部农牧交错区针阔树种人工林群落稳定性评价  

Community Stability Evaluation of Coniferous and Deciduous Plantation in Agro-pastoral Ecotone of Northern Shanxi- Hebei,China

作　　者：赵昕[1,2] 张万军[1] 曹建生[1] 刘秀萍[1] 曾歆花[1,2] 沈会涛[1] 

机构地区：[1]中国科学院遗传与发育生物学研究所,农业资源研究中心农业水资源重点实验室,河北省节水农业重点实验室,河北石家庄050021 [2]中国科学院大学,北京100049

出　　处：《山地学报》2014年第2期171-178,共8页Mountain Research

基　　金：中国科学院战略性先导科技专项课题京津风沙源治理工程固碳速率和潜力研究(XDA05060600)~~

摘　　要：以晋冀北部农牧交错区5种主要人工林为研究对象,利用主成分分析法和关联维数评价林地群落稳定性、分析群落结构。结果表明:随着群落稳定性变差,胸径和树高关联维数均呈增加趋势。针叶树种的稳定性强于阔叶树种。胸径关联维数针叶树种0.58小于阔叶树种0.64,树种排序为油松0.57<落叶松0.59<樟子松0.61<山杏0.62<杨树0.67;树高关联维数针叶树种0.53小于阔叶树种0.60,树种排序为落叶松0.41<油松0.56<山杏0.58<樟子松0.61<杨树0.62,基于两种维数,不同树种稳定性从强到弱依次为落叶松>油松>山杏>樟子松>杨树,与主成分分析法的稳定性评价结果一致。因此,针叶树种,尤其是落叶松具有较强的稳定性,是该地区生态环境恢复、树种优选的主要树种。Principal component analysis （PCA） was used to assess the community stability of five plantation commu- nity in agro-pastoral ecotone in northern Shanxi and Hebei province, China. The results showed that stability of co- niferous species from strong to weak for larch, pinus tabulaeformis, mongolian pine in turn. The stability of conifer- ous species is stronger than deciduoud species. Studi^s also showed that the correlation dimension of fractal theory is feasible in measuring community stability from the perspective of community structure. Both DBH correlation di- mension and tree height correlation dimension increased with the lessened community stability. DBH correlation di- mension of coniferous species and deciduoud species are 0.58 and 0.64, respectively. The magnitude of DBH cor- relation dimension in differnt tree species is： pinus tabulaeformis （0. 57 ） 〈 larch （0. 59 ） 〈 mongolian pine （0.61） 〈 prunus armeniaca（0. 62） 〈poplar（0. 67）. Similar to DBH correlation dimension, tree height correla- tion of deciduous species（0.60） is higher than that of coniferous species（0.53）. The magnitude of correlation di- mension in different tree species is： larch （0.41） 〈 pinus tabulaeformis （0. 56 ） 〈 prunns armeniaca （0. 58 ） 〈 mongolian pine（0. 61） 〈 poplar（0. 62）. Based on these two correlation dimension, the stability of the different tree species is： larch 〉 pinus tabulaeformis 〉 prunus armeniaca 〉 mongolian pine 〉 poplar, which is in accord with the results of PCA stability assessment. Therefore, the coniferous species, especially the larch, is the strongest stability species, and it will be the preferred species in future eclogical environment restoring.

关 键 词：晋冀北部 农牧交错区 针阔树种 人工林 稳定性 主成分分析 关联维数 

分 类 号：Q948[生物学—植物学]