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应用生态学报 ›› 2016, Vol. 27 ›› Issue (6): 1811-1819.doi: 10.13287/j.1001-9332.201606.037

• 目次 • 上一篇    下一篇

冬麦田臭氧干沉降过程的观测

李 硕1*, 郑有飞1,2,3, 吴荣军1, 尹继福3, 徐静馨3, 赵 辉1, 孙 健4   

  1. 1南京信息工程大学环境科学与工程学院, 南京 210044;
    2江苏省大气环境监测与污染控制高技术研究重点实验室, 南京 210044;
    3南京信息工程大学大气物理学院, 南京 210044;
    4上海市闵行区气象局, 上海 201199
  • 收稿日期:2015-12-23 发布日期:2016-06-18
  • 通讯作者: zhengyf@nuist.edu.cn
  • 作者简介:李 硕,女,1988年生,硕士研究生.主要从事大气环境和农业气象研究. E-mail: shuolee2006@163.com
  • 基金资助:
    本文由国家自然科学基金项目(41475108)和教育部高等学校博士学科点专项科研基金项目(20123228110003)资助

Observation of ozone dry deposition in the field of winter wheat.

LI Shuo1*, ZHENG You-fei1,2.3, WU Rong-jun2, YIN Ji-fu3, XU Jing-xin3, ZHAO Hui1, SUN Jian4   

  1. 1College of Environmental Science and Engineering, Nanjing University of Information Science &
    Technology, Nanjing 210044, China;
    2Jiangsu Key Laboratory of Atmospheric Environment Motoring &
    Pollution Control, Nanjing 210044, China;
    3College of Atmospheric Physics, Nanjing University of Information Science &
    Technology, Nanjing 210044, China;
    4Minhang Meteorological Bureau, Shanghai 201199, China
  • Received:2015-12-23 Published:2016-06-18

摘要: 地表臭氧作为近地层最主要的大气污染物之一,其不断上升的浓度及其对粮食作物的影响受到越来越多的关注.本研究利用微气象学观测方法,探明自然条件下冬麦田的臭氧沉降过程,分析了影响臭氧沉降过程的环境因子.结果表明: 观测期内(小麦生长旺期)臭氧通量均值为-0.35 μg·m-2·s-1(负号表示沉降方向指向地面),臭氧沉降平均速率为0.55 cm·s-1,空气动力学阻力均值为30 s·m-1,粘性副层阻力均值为257 s·m-1,冠层阻力均值为163 s·m-1,且均存在明显的日变化趋势.臭氧沉降阻力大小受摩擦速度、太阳辐射强度、温度和相对湿度等因素的影响.

Abstract: Ozone is one of the main atmospheric pollutants over surface layer, and its increasing surface ozone concentration and its impact on main crops have become the focus of the public. In order to explore ozone deposition law and environmental factors influencing ozone deposition process, this study used the micrometeorological methods and carried out the experiment under natural conditions. The results showed that during the observational period (the vigorously growing season of wheat), the mean value of ozone flux was -0.35 μg·m-2·s-1(the negative sign indicated that the deposition direction was toward the ground). The mean rate of ozone deposition was 0.55 cm·s-1. The mean value of aerodynamic resistance was 30 s·m-1, the mean value of sub-layer resistance was 257 s·m-1, and that of the canopy layer stomatic resistance was 163 s·m-1. All the test parameters presented distinct diurnal fluctuation. The ozone deposition resistance was influenced by friction velocity, solar radiation velocity, temperature, relative humidity and other factors.