海南岛东北部地区潮间带土壤（沉积物）环境地球化学特征、形成机理及其生态效应研究

项目名称： 海南岛东北部地区潮间带土壤（沉积物）环境地球化学特征、形成机理及其生态效应研究

项目编号： No.41261062

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 赵志忠

作者单位： 海南师范大学

项目金额： 50万元

中文摘要： 潮间带作为地球表层系统中陆地、海洋、大气交汇和相互作用的主要场所，是地球表层物质、能量交换最活跃的区域之一。然而目前有关潮间带土壤（沉积物）地球化学元素在海水/土壤（沉积物）相互作用过程中的迁移富集机理、动力学机制及其生态环境影响等诸多问题一直没有定论。本项研究主要通过分析海南岛东北部地区潮间带不同类型土壤的组成、结构、物理性质及沉积物组成、物源特征和沉积环境，查明区内不同类型土壤、沉积物中环境地球化学元素的形态特征、赋存状态及元素的空间分布规律，探讨潮间带海水/土壤（沉积物）界面下环境元素的迁移规律及其制约因素，建立元素在海水-土壤（沉积物）相互作用过程中迁移转化的耦合模型，厘定土壤、沉积物中元素迁移的动力学机制，并进而分析海水-土壤（沉积物）-植物系统中环境元素迁移转化与生态环境的相关关系。项目研究对丰富潮间带土壤（沉积物）地球化学研究内容和改善区域生系统均具有重要的理论与实际价值。

中文关键词： 沉积物；沉积环境；元素；迁移；红树林

英文摘要： The intertidal zones are not only the main places for the land-ocean-atmosphere surface interaction in the earth surface, but also the most active areas of material and energy exchange in the earth. For a long time,both the geologists and geographic specialists think these areas are the key areas to solve the problems of global changes and should be pay particular attention to them. Thus, many project have been done and a lot of important achievements are made in these areas during the past ten years. However,many problems such as the laws of migration and enrichment of the elements of the sedments,dynamics mechanism and the ecological environment effect of geochemical elements in the process of interaction between the sea water and soil(sediment) in intertidal zone soil(sediment) still have not been solved. This project take the sytem of sea water-soil（sediments）- mangrove-plants as object to study the dynamics mechanism of geochemical element migration of soil(sediment) and its eco-environment effects in intertidal zone of Northeastern Hainan Island. The research procedure is as follows: First of all，try to find out the characteristics of the material sources of sediment in different areas in intertidal zones of Northeastern Hainan Island by using different methods to analyse composition, structure, physical p

英文关键词： sediment；sedimentary environment；element；migration；mangrove forest