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生态学杂志

• 综述与专论 • 上一篇    下一篇

河岸缓冲带对氮污染物削减作用研究进展

王琼1,范康飞1,范志平1,2*,李法云1,王珺1,王善祥1,唐雅妮1   

  1. (1辽宁石油化工大学生态环境研究院, 辽宁抚顺 113001;2中国科学院沈阳应用生态研究所, 沈阳 110016)
  • 出版日期:2020-02-10 发布日期:2020-02-10

Nitrogen pollutant removal by riparian buffer zone: A review.

WANG Qiong1, FAN Kang-fei1, FAN Zhi-ping1,2*, LI Fa-yun1, WANG Jun1, WANG Shan-xiang1, TANG Ya-ni1   

  1. (1Institute of Eco-environmental Sciences, Liaoning Shihua University, Fushun 113001, Liaoning, China; 2Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China).
  • Online:2020-02-10 Published:2020-02-10

摘要: 氮(N)是水体的重要污染物之一。河岸缓冲带作为连接陆域和水域的生态纽带对N素去除效果显著,是有效控制N素向水体输出的重要途径。本文介绍了河岸带N素的迁移过程,从物理、化学及生物角度阐述了河岸带对N素的去除机理,归纳总结了河岸带对N素的去除效率、影响因素和研究手段。指出不同N素去除途径下N素去除效率的主要影响因素不同,植被结构、土壤渗透和持水特征、河岸宽度和坡度是通过影响物理作用去除N素的主导因素,植被类型、季节动态、植物生长发育是通过影响植物吸收去除N素的主导因素,土壤温度、有机碳含量、pH、硝态氮含量、氧含量是通过影响反硝化作用去除N素的主导因素。最后分析了当前研究中存在的问题,并提出了研究展望及今后研究重点。

关键词: 龙溪河, 植被覆盖度, 植被恢复, 遥感, 汶川地震

Abstract: Nitrogen (N) is one of the most important pollutants in water. Riparian buffer zone, an ecological zone between terrestrial and aquatic ecosystems, performs excellently in removing N pollutants and thus is an effective way to control N output to water. Here, we introduced the process of N migration in riparian zone. The removal mechanisms of N by riparian buffer zone were elucidated from the perspective of physical, chemical and biological processes. We summarized research methods, removal efficiency and influencing factors of N reduction by riparian zone. Vegetation structure, soil permeability, and water holding characteristics, riverbank width and slope were the main factors affecting N removal by physical processes. Vegetation type, seasonal dynamics, and plant growth were the factors affecting N removal by plant assimilation. Soil temperature, organic carbon content, pH, nitrate and oxygen content contents were the main factors affecting N removal by denitrification. Finally, the problems in the current research and the future application were discussed.

Key words: Longxi River, Wenchuan earthquake, vegetation coverage, remote sensing., vegetation recovery