【作者】 周建勤；

【导师】 朱金兆；

【作者基本信息】 北京林业大学 ， 水土保持与荒漠化防治， 2012， 博士

【摘要】 本研究以森林生态学、系统科学和景观规划为理论基础,以风景区残次林样地调查为基础数据,区分四种风景区残次林群落类型,对北京低山风景区残次林群落结构特征和植被进行了分析,同时构建风景区残次林判断指标,采用正态分析及等距分组法确定评价指标标准,利用层次分析法确定指标权重,根据调查数据对北京风景区残次常绿+落叶林、风景区残次落叶灌丛或小乔木林、风景区残次落叶阔叶林和风景区残次常绿林四种残次林类型进行残次等级判定。最后对四种风景区残次林群落类型进行改造研究,并且以鹫峰森林公园沐容亭周边风景区残次林为例,判断其残次等级,提出具体的改造设计规划,为北京低山的风景区残次林改造建设提供依据。本论文主要研究结论如下：(1)区分四种风景区残次林群落类型,对风景区残次常绿+落叶林、风景区残次落叶灌丛或小乔木林、风景区残次落叶阔叶林和残次常绿型风景林进行结构特征分析。(2)对风景区残次林进行植被分析,得出如下结论：四种风景区残次林类型的多样性指数、均匀度指数、丰富综合度指数比较表现为：多样性指数的变化基本一致,均匀度指数表现为风景区残次落叶阔叶林最大,风景区残次常绿+落叶林最小,风景区残次灌丛或小乔木林和残次常绿型风景林几乎是相等的。T-Jsw表现为风景区残次灌丛或小乔木林>风景区残次落叶阔叶林>残次常绿型风景林>风景区残次常绿+落叶林；丰富综合度指数T-Jsw和T-Jgi两种指数在四种类型风景区残次林的比较上有差异,但都表现为最小值为风景区残次常绿+落叶林。(3)提出风景区残次林的概念,解释说明其内涵。构建了北京低山风景区残次林评价指标体系。(4)得到风景区残次林等级评价指标层各指标权重的总排序,有AP=(0.13750.1125 0.0374 0.0202 0.0354 0.0171 0.0165 0.0191 0.0168 0.0202 0.02210.0156 0.0295 0.0494 0.047 0.0635 0.0901 0.0999 0.0874 0.06627)对样地评价,统计结果表明,样地风景区二级残次林最多,比例为35%,风景区非残次林和风景区一级残次林的样地少,分别占7%和8%,三次风景区残次林样地的占27.5%。经过评价风景区残次常绿+落叶阔叶林,属于风景区一级残次林；风景区残次落叶阔叶林,属于风景区二级残次林。风景区残次落叶灌丛或小乔木林,属于风景区一级残次林；风景区残次常绿林,属于风景区二级残次林；总体风景区残次林,属于风景区一级残次林。(5)从风景区残次林的改造的原则和目标入手,根据立地条件、群落特征、游憩功能、视觉景观质量这四个目标为出发点,合理选择树种。提出残次常绿型风景林、风景区残次落叶阔叶林、风景区残次常绿+落叶阔叶型林和残次灌丛或小乔型风景林不同改造方式,且具体细分为远景设计、近景设计和观景平台周边设计三个层次。提出风景区残次林营建技术措施,从苗木的选择、苗木的规格要求、树种调剂、替代、改造的技术措施和改造施工的要点都做了详细的说明。(6)以沐容亭风景区残次林改造为例,判断沐容亭风景区残次林残次等级,依据残次等级进行分区改造规划设计,为风景区残次林改造提供理论和现实依据。更多还原

【Abstract】 Based on theories of forest ecology and systemic science and planning of landscape forest, and according to the consisting of basic scenic spot relict aesthetic forest plots investigation data, community structure of scenic spot relict aesthetic forest and vegetation characteristics was analyzed, as same time the index of compatibility of scenic spot relict aesthetic forest was constructed. Normal analysis and isometric group method were used for determining evaluation index. AHP was used for determining index weight. According to survey data, The grade of scenic spot relict aesthetic forest was determined to four vegetation communities of evergreen and deciduous aesthetic forest, scenic spot relict deciduous aesthetic forest, scenic spot relict shrub and small tree aesthetic forest and scenic spot relict evergreen aesthetic forest. Finally, modification technology of the scenic spot relict aesthetic forest was studied, and the transformation planning was proposed, and taking the MuRrong pavilion of scenic spot relict aesthetic forest for example. There were some research conclusions:(1) Structural characteristics of four vegetation communities was analyzed about evergreen and deciduous aesthetic forest, scenic spot relict deciduous aesthetic forest, scenic spot relict shrub and small tree aesthetic forest and scenic spot relict evergreen aesthetic forest.(2) The total number of species manifested as the scenic spot relict deciduous aesthetic forest> the evergreen and deciduous aesthetic forest>the scenic spot relict evergreen aesthetic forest>the scenic spot relict shrub and small tree aesthetic forest. Seedlings of each types tree, based on analysis of species important value in shrub layer, was rare, do not both play important position, Seedlings tree of Ulmus macrocarpa and Locust were found in the shrub layer of the scenic spot relict evergreen aesthetic forest, which important value was over 2%. Constructive species, which success toward to climax community, the scenic spot relict evergreen aesthetic forest in low mountain of Beijing, was deficient. Diversity index, evenness index and richness index were compared about four types of the scenic spot relict evergreen aesthetic forest. Changes were almost consistent about diversity index. Evenness index of scenic spot relict deciduous aesthetic forest was the maximum, and evenness index of evergreen and deciduous aesthetic forest was the minimum. All kinds of index were almost equivalent about the scenic spot relict shrub and small tree aesthetic forest and the scenic spot relict evergreen aesthetic forest. T-JSW was represented that the scenic spot relict shrub and small tree aesthetic forest>the scenic spot relict deciduous aesthetic forest>the scenic spot relict evergreen aesthetic forest>the evergreen and deciduous aesthetic forest, richness index of T-JSW and T-Jgi was different, the evergreen and deciduous aesthetic forest was both the minimum on richness index of T-Jsw and T-Jgi. (3) Concept and content of the scenic spot relict aesthetic forest was explained. Evaluation index system of the scenic spot relict aesthetic forest, which included target layer, rule layer and index level, was initially built by collecting information and data in low mountain of Beijing.(4) The general ranking of index weight about evaluation layer on the scenic spot relict aesthetic forest was AP= (0.1375 0.1125 0.0374 0.0202 0.0354 0.0171 0.0165 0.0191 0.0168 0.0202 0.0221 0.0156 0.0295 0.0494 0.047 0.0635 0.0901 0.0999 0.0874 0.06627)According to the Statistics, the second scenic spot relict aesthetic forest was the most, make up 35% of total, the Non- scenic spot relict aesthetic forest and the first order scenic spot relict aesthetic forest were the minimum, make up 7% and 8%, the third scenic spot relict aesthetic forest make up 27.5% of total plot.The evergreen and deciduous aesthetic forest was the first order scenic spot relict aesthetic forest, the scenic spot relict deciduous aesthetic forest was the second scenic spot relict aesthetic forest, the scenic spot relict shrub and small tree aesthetic forest was the first order scenic spot relict aesthetic forest, the scenic spot relict evergreen aesthetic forest was the second scenic spot relict aesthetic forest, the scenic spot relict aesthetic forest was the first order scenic spot relict aesthetic forest.(5) Starting with principles and objectives of the transformation of the scenic spot relict aesthetic, and based on site condition, community characteristics, recreational function and vision of landscape quality, Species was reasonable choice, four transformation of the scenic spot relict aesthetic forest were proposed, which were consist of four levels about design of prospect, design of close-range and design of sightseeing platform peripheral Areas.Technical measure of the scenic spot relict aesthetic forest was proposed, specification requirements of seedling, dispensing seedling, modification measures and transformation construction points were all detailed explained.(6) The transformation planning was proposed about MuRrong pavilion of the scenic spot relict aesthetic forest, which offering the realistic basis for transformation of the scenic spot relict aesthetic forest.更多还原