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Study on Nitrogen Retention in Riparian Vegetation System

Abstract

随着经济发展和人口增加,世界范围内水体污染日趋严重,已经成为限制经济社会发展和威胁人类健康的重大环境问题。河岸植被土壤系统能显著减少地下水和地表水中的污染物进入水生生态系统。在我国南方丘陵地区,广泛种植的竹林是常见的次生植被群落,因此对河岸竹林土壤系统的深入研究,对于防治我国的环境污染和受纳水体的富营养化问题具有十分重要的理论和现实意义。 本文利用具有创新意义的土壤壤中流采集装置,结合水样氮素的分析与土壤反硝化实验,将河岸植被土壤作为一个系统,了解其内部的主要生物地球化学过程,确定系统对污染物削纳的机制和过程。主要结论如下: (1)由于林冠的截留,穿透雨开始时间会晚于背景降雨,时间会长于背...With the development of economy and expansion of population, water pollution has become more serious, which has limited the economic and social development and threatened human's health. Riparian vegetation system has a good function to reduce the pollutant of surface water and ground water to enter aquatic ecosystems. The riparian systems which were full of bamboos were common secondary vegetatio...学位:理学硕士院系专业:海洋与环境学院环境科学与工程系_环境管理学号:2262006115239

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