浑善达克沙地沙丘微地形与榆树疏林耦合关系的研究

项目名称： 浑善达克沙地沙丘微地形与榆树疏林耦合关系的研究

项目编号： No.31260202

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 农业科学

项目作者： 李钢铁

作者单位： 内蒙古农业大学

项目金额： 50万元

中文摘要： 榆树疏林是温带典型草原地带、适应沙地环境特征的最稳定的植被类型和沙地植被演替的顶级群落，也是沙地生态系统的重要组成单元。榆树疏林主要分布在内蒙古自治区的三个沙地上，但浑善达克沙地与其他两个沙地的榆树疏林具有独特性：沙丘从5米开始到30米以上的沙丘，都可以区分出明显的类似山地的阴阳坡，阴阳坡面上的榆树疏林地特征具有本质上的区别。本研究拟以浑善达克沙地榆树疏林为研究对象，采用定点长期观测与短期全面调查相结合、野外调查与室内分析测试相结合、数量生态学与地统计学相结合的方法，利用SPSS 软件对测定数据进行方差分析、相关性分析、回归分析及主分量分析(PCA)、半方差法空间异质性分析，深入分析沙丘阴阳破面上榆树疏林的群落特征差异、沙丘微地形环境差异，揭示沙丘微地形环境与榆树疏林的互相作用机理、适应机制，以期为浑善达克沙地榆树疏林的保护、退化疏林草原生态系统的恢复和沙地的治理提供科学依据。

中文关键词： 浑善达克沙地；榆树疏林；沙丘微地形；植被特征；相似性

英文摘要： Elm woodland is the most stable type of vegetation and sandy land vegetation succession climax community which adapt to the sandy land environment characteristics in temperate typical steppe zone, and is also the important unit of the sandland ecological system. Elm woodland is mainly distributed in the three sandlands of Inner Mongolia Autonomous Region, but Hunshandake sandland is unique compared to the other two sandlands that is regardless of the dunes level, it can distinguish shady and sunny slope of a similar mountain on which has the essential difference about the elm woodland characteristics. The object of this study were elm woodland and it using the combination of fixed-point long-term observation and short-term comprehensive survey, field investigation and laboratory analysis, quantitative ecology and geostatistics such these methods to study community structure, species composition, species diversity, distribution patterns, productivity, succession characteristics, update status, micro-environmental differences of elm woodland under the conditions of the different types of sand dunes. It deeply analyzed the interaction of dune micro-environment and elm woodland and revealed the interaction mechanism, effect mechanism and adaptation mechanism of the micro-environment of elm woodlands and elm woodland

英文关键词： Hunshandake SandLand；Elm woodland；Dune micro-environment；vegetation characteristics；similarity