辽东山地老秃顶子冰缘地貌植物群落稳定性研究

项目名称： 辽东山地老秃顶子冰缘地貌植物群落稳定性研究

项目编号： No.41271064

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 张华

作者单位： 辽宁师范大学

项目金额： 75万元

中文摘要： 辽东中山山地老秃顶子为辽宁省最高峰，地处辽宁老秃顶子国家级自然保护区核心区内，属长白山脉龙岗支脉向西南延续部分，局部地段因受第四纪冰川气候的影响，形成了大面积石海、石河和石流坡冰缘地貌，俗称跳石塘或乱石窖地貌，其上发育的植物群落对该特殊生境起着稳定和联合的作用，植物群落的稳定性很大程度上决定着该区域发生泥石流重大地质灾害的危险性。基于此，本项目以辽宁老秃顶子国家级自然保护区核心区内的冰缘地貌为研究样地，采用野外样地调查、室内实验测试和定量分析相结合的研究方法，首先运用植被数量分析法，确定自然干扰状况下石海、石河和石流坡的植物群落类型、组成结构及立地环境特征，测度群落物种多样性、优势种群的生态位和群落的演替度，然后运用层次分析法和群落稳定性综合指数测算法，同时运用M.Godron稳定性计算法，综合测度石海、石河和石流坡植物群落的稳定性。该研究可为辽东山区冰缘地貌植被的经营和管护提供科学依据。

中文关键词： 植物群落；生物多样性；植被演替；群落稳定性；冰缘地貌

英文摘要： Mt. Laotudingzi in the eastern Liaoning Province is a mid-size mountain, also is the highest peak in Liaoning Province, located in the core region of Liaoning Laotudingzi National Nature Reserve. It is the southwest extension part of Changbai Mountains Longgang branch. Because of the influence of Quaternary glacical climate, some areas formed periglacial landforms which are rock block field, rock stream, rock glacier side, commonly called Tiaoshitang or Luanshijiao landform. Vegetation community grown in the landform made great contribution to stabilize and contact the special habitat. To a great extent, whether there is debris flow such a major geological disaster or not, depends on the vegetation community stability. Based on this, the authors chosen the periglacical landform from core region of Liaoning Laotudingzi National Reserve as the research samples. Used combinative methods such as field plots survey, laboratory testing and quantitative analysis in the research. First of all, through the testing of vegetation number, determined the community types, composition structure and site environment characteristics of the rock block field, rock stream, rock glacier side. Also the authors determined the diversity of community species and the niche of dominant species, and its degree of succession, then applying

英文关键词： vegetation；biological diversity；vegetation succession；community stability；periglacial landform