中国农业气象

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复杂地形条件下涡度相关法通量测定修正方法分析

王春林;周国逸;王旭;周传燕;于贵瑞;   

  1. 中国科学院华南植物园,中国科学院华南植物园,中国科学院华南植物园,中国科学院华南植物园,中国科学院地理科学与资源研究所 广州510650,广东省气候与农业气象中心,广州510650,广州510650,广州510650
  • 出版日期:2007-06-10 发布日期:2007-06-10
  • 基金资助:
    国家重点基础研究发展规划项目(2002CB412501);; 中国科学院知识创新工程(KZCX1-SW-01-01A);; 中国科学院重要方向项目(KSCX2-SW-120);; 广东省自然科学基金重点项目(010567)

Analysis of Correction Method on Eddy Flux Measurement over Complex Terrain

WANG Chun-lin1,2,ZHOU Guo-yi1,WANG Xu1, Zhou Chuan-yan1,YU Gui-rui3 (1.South China Botanical Garden,CAS,Guangzhou 510650,China;2.Climate and Agro-meteorological Center of Guangdong Province;3.Institute of Geographical Science and Natural Resources Research)   

  • Online:2007-06-10 Published:2007-06-10

摘要: 复杂地形条件下涡度相关法通量观测修正方法以及夜间净生态系统CO2交换通量(NEE)质量评价方法,是世界范围内通量观测研究中的重大技术问题。本文以鼎湖山南亚热带针阔叶混交林生态系统涡度相关法碳通量观测数据,探讨典型订正方法对CO2通量估算的影响。主要结论有:1)基于流线坐标系统的二次坐标旋转(DR)、三次坐标旋转(TR)和平面拟合坐标旋转(PF),均使得CO2通量(Fc)绝对值趋于变小,变化幅度依次为:DR

关键词: 涡度相关, 碳通量, 鼎湖山, 针阔叶混交林

Abstract: Based on the observation data of the flux measurement in the subtropical coniferious and broad-leafed mixed forest ecosystem in Dinghushan,the influence of the typical correction method on eddy flux estimates of carbon dioxide was analyzed.The main results were as follows: 1) By using all of the three coordinate system transforming methods of Double Rotation(DR),Triple Rotation(TR) and Planer Fit(PF),the absolute values of CO2 flux(Fc) after terrain correction tended to be smaller than uncorrected values.Sequence order of changed Fc extend was DR

Key words: Eddy covariance, Eddy covariance, Carbon flux, Dinghushan, Coniferious and broad-leaved forest.