河岸植被土壤系统对面源污染的削减和净化研究  

Research on Reduction and Purification of Pollution by Riparian Buffer Ecosystem

作　　者：方婧[1] 曹文志[1] 蒋文志[1] 黄虹[1] 蔡龙炎[1] 苏彩霞[1] 王飞飞[1] 

机构地区：[1]近海海洋环境科学国家重点实验室厦门大学环境科学研究中心,福建厦门361005

出　　处：《环境科学导刊》2010年第4期49-53,共5页Environmental Science Survey

基　　金：国家自然科学基金资助项目(40671116);福建省自然科学基金重点项目(D0720002);教育部新世纪优秀人才支持计划;福建省高校新世纪优秀人才支持计划

摘　　要：具有一定群落结构的河岸植被土壤系统内部具有较大的生物生存空间和相互作用区域,其间生物地球化学联合机制,可以减缓径流,捕获泥沙,截断或去除地表径流、壤中流或渗漏水及浅层地下水中的氮磷等元素。各种污染物的净化效果受系统内部和外部条件影响,主要包括:污染负荷、系统宽度、植被类型、水文地质、土壤条件等因素。Riparian ecosystem as the most important buffer area between terrestrial and aquatic ecosystems has been proposed as an effective means for combating agricultural diffuse source nutrient transport to streams and lakes.Riparian zones can disperse and reduce the velocity of surface runoff and promote infiltration,sediment deposition and nutrient retention as well as lower nutrient concentrations in shallow groundwater.There are many factors regulating nutrient removal rates in riparian zones,such as width and slope gradient of buffer zones,nutrient loading,vegetation types,hydrogeology,mechanism,temporal and spatial variation.Therefore,the use of riparian management zones is well established worldwide as a best management practice for water quality improvement in agricultural watersheds.

关 键 词：河岸植被土壤系统 面源污染 削减 净化 机制 

分 类 号：X52[环境科学与工程—环境工程]