文章摘要
夏星辉,王君峰,张翎,张思波.黄河泥沙对氮迁移转化的影响及环境效应[J].水利学报,2020,51(9):1138-1148
黄河泥沙对氮迁移转化的影响及环境效应
Effects and environmental implications of suspended sediment on the transportation and transformation of nitrogen in the Yellow River
投稿时间:2020-07-30  
DOI:10.13243/j.cnki.slxb.20200587
中文关键词: 黄河  氮循环  温室气体  泥沙  河流
英文关键词: Yellow River  nitrogen cycle  greenhouse gas  suspended sediment  rivers
基金项目:国家创新研究群体科学基金项目(51721093);国家重点研发计划项目(2017YFA0605001)
作者单位
夏星辉 北京师范大学 环境学院, 水沙科学教育部重点实验室, 水环境模拟国家重点实验室, 北京 100875 
王君峰 北京师范大学 环境学院, 水沙科学教育部重点实验室, 水环境模拟国家重点实验室, 北京 100875 
张翎 黄河水利科学研究院, 河南 郑州 450003 
张思波 北京师范大学 环境学院, 水沙科学教育部重点实验室, 水环境模拟国家重点实验室, 北京 100875 
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中文摘要:
      黄河具有高泥沙含量的特点,泥沙对营养元素和污染物的迁移转化具有重要的影响。含氮化合物是我国河流的主要污染物之一,是国家重点防控污染物,是影响河流水体健康的重要因素。本文基于实验室模拟实验和野外采样研究成果系统综述了泥沙对河流氮迁移转化的影响及其环境效应。重点分析了(1)黄河水体含氮化合物的时空分布特征及来源;(2)含氮化合物的悬浮泥沙-水界面过程以及悬浮泥沙对氮转化过程的促进作用;(3)悬浮泥沙含量和粒径等对有机氮降解、硝化作用、反硝化作用、耦合硝化反硝化作用以及厌氧氨氧化作用的影响;(4)泥沙对温室气体N2O产生和排放的影响,以及(5)水沙条件变异对氮迁移转化作用的影响。研究结果可为气候变化和人类活动双重作用下河流氮污染治理以及温室气体的排放控制提供科学依据。
英文摘要:
      The Yellow River is featured by high suspended sediment (SPS) concentration, and sediment plays an important role in transportation and transformation of nutrients and contaminants in river systems. Nitrogenous compound is one of the primary contaminants in river systems and has a high priority in water pollution control in China for its severe influence on water quality and health. to investigate The effect and environmental implication of SPS on the transportation and transformation of nitrogen are investigated on the basis of incubation experiments and field observations,of which five aspects are highlighted:(1) the spatiotemporal distribution patterns and sources of nitrogenous compounds in the Yellow River;(2) processing of nitrogenous compounds at the SPS-water interfaces and stimulation of SPS on nitrogen transformations;(3) the effect of concentration and particle size distribution of SPS on mineralization, nitrification, denitrification,coupled nitrification-denitrification,and anammox;(4) the effect of SPS on N2O production and emission;(5) the nitrogen transport and transformation under the conditions of variable incoming water and sediment. The review is expected to lay a scientific basis for the regulation of nitrogen pollution and control of greenhouse gas emissions in rivers under the combined impacts of climate change and human disturbance.
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