黄河三角洲典型植被物种功能生态位和环境耦合机制研究

项目名称： 黄河三角洲典型植被物种功能生态位和环境耦合机制研究

项目编号： No.31200143

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 微生物学、植物学

项目作者： 徐飞

作者单位： 山东师范大学

项目金额： 21万元

中文摘要： 进行湿地植被典型物种对环境变化的适应性机制研究，对于湿地生态系统的恢复和监测具有重要的科学意义。本研究以黄河三角洲典型植被物种为研究对象，选取代表性样地进行野外群落调查和生境分析，确定不同物种的栖息地资源偏好和可能的物种组成方式，建立区域植被分布格局和群落生产力模型，并在此基础上筛选主导环境因素，进行典型物种的室内环境控制实验，从个体和群落两个尺度上了解物种功能性状与所处环境的相互关系，结合个体的异速生长、表型可塑性等适应调节机制，以及与不同物种的种间生态位变化关系，探寻不同环境下以及不同物种在群落组合中的功能性状差异，构建物种功能生态位模型，并通过个体生物量和群落生产力的关系，将不同尺度的研究进行有机整合，使个体和群落的环境耦合模型可以相互进行正向和反向的预测和验证，从而更好地解释黄河三角洲植被分布格局及群落演替规律。

中文关键词： 湿地植被；功能性状；环境扰动；功能生态位模型；等高线提取模型

英文摘要： The researches on adaptive mechanisms of wetland typical plant species to environmental changes have vitally scientific importance to the restoration and monitoring of wetland ecosystem. In this study, we will focus on the vegetation in the Yellow River Delta. Representative sampled areas should be selected to investigate the communities' characters and habitat environments. We can subsequently identify the predilection of resources selection to different species in the habitat preference and the possibility of species composition. The pattern of regional distribution to the vegetation and the models of community productivity can also be established. Based on the survey in the field, dominant environmental factors can be selected for the indoor environmental simulated experiments to the typical plant species. The relationships between the plant functional traits and the environment surrounded can be measured and analyzed in two scales from the individuals to the communities. Combining the adaptive mechanisms of individual allometry and phenotypic plasticity with the inter-specific niche changes between different species composition, we can find out the differences of plant functional traits between different environments and different species combinations, and design the models of plant functional niches to diff

英文关键词： wetland vegetations；functional traits；environmental disturbance；functional niche model；contour extraction model