徐州市侧柏人工林的群落结构特征  

Community Structure Characteristics of Platycladus orientalis Plantation in Xuzhou City

作　　者：尤海梅[1] 阎传海[2] 王仲宇 

机构地区：[1]徐州师范大学城市与环境学院,江苏徐州221116 [2]青岛理工大学环境与市政工程学院,山东青岛266033 [3]辽宁省本溪市林业局,辽宁本溪117000

出　　处：《福建林业科技》2011年第2期25-29,共5页Journal of Fujian Forestry Science and Technology

基　　金：日本文部省科研基金项目"Integrated Vegetation Mapping of Asia"(No.16255003);徐州师范大学科研基金项目"苏北山地人工林近自然化改造技术研究"(10XLA10)

摘　　要：依据群落学的调查资料,利用TWINSPAN分类法对徐州市近50年生的34个侧柏人工林群落进行了分类;并运用频度、重要值和径级分析法,分析群落的树种组成和径级结构,探讨人工林的自然化发展趋势和近自然化改造途径。结果表明:现有侧柏人工林内已不同程度地侵入了一些阔叶树种,表现出了自然化的发展趋势;不同的立地条件下侧柏人工林的自然化发展速度不同;现有人工林内各树种的径级分布均有间断,树种自身的天然更新困难。侧柏人工林的近自然化改造应重视对林冠下侧柏及其它阔叶树种的培育,按照"侧柏人工林→针阔混交林→阔叶林"的模式,因地制宜地分阶段进行。34 plots communities for ages of no more than 50 years were classified by using TWINSPAN method based on community survey data.Then,the woody composition structure and diameter classes structure for these communities were analyzed and the plantations naturalization tendency and reconstructing approach close to nature were discussed by using the frequency and important value,and diameter classes analysis method The results showed that three plantations were still dominated by the Platycladus orientalis,however,the broadleaf trees had occupied a certain proportion,and the plantations had obviously presented naturalization tendency.Naturalization development speeds were different under different site conditions;the present diameter classes distribution of tree species were discontinuous,the natural regeneration was difficult.The reconstructing approach close to nature should pay attention to the cultivation Platycladus orientalis and broadleaf trees under the canopy and should also adapt to the local habitat according to the model of Platycladus orientalis plantation→ conifers and deciduous mixed forest → broadleaved forest.

关 键 词：侧柏人工林 群落结构 树种组成 径级结构 徐州市 

分 类 号：S718.542[农业科学—林学]