地球科学进展 ›› 2010, Vol. 25 ›› Issue (11): 1283 -1290. doi: 10.11867/j.issn.1001-8166.2010.11.1283

观测数据应用 上一篇    下一篇

大孔径闪烁仪法测算低丘山地人工混交林显热通量的可行性分析
张劲松,孟平,郑宁,黄辉,高峻   
  1. 中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京 100091
  • 收稿日期:2010-03-16 修回日期:2010-08-24 出版日期:2010-11-10
  • 通讯作者: 张劲松 E-mail:zhangjs@caf.ac.cn
  • 基金资助:

    公益性行业(气象) 科研专项“大尺度水热通量观测系统的研制与应用研究”(编号:GYHY200706046);“十一五”国家科技支撑计划课题“华北土石山区植被恢复与重建技术试验示范”(编号:2006BAD03A11);黄河小浪底森林生态系统定位研究站基金项目资助.

The Feasibility of Using LAS Measurements of the Sensible Heat Flux from a Mixed Plantation in the Hilly Zone of the North China

Zhang Jinsong, Meng Ping, Zheng Ning, Huang Hui, Gao Jun   

  1. Research Institute of Forestry, CAF; Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China
  • Received:2010-03-16 Revised:2010-08-24 Online:2010-11-10 Published:2010-11-10

利用位于河南省济源市的华北低丘山地30年生栓皮栎—侧柏—刺槐人工混交林2009年主要生长季节(5~9月)湍流通量及空气结构参数等观测数据,确定迭代法为该下垫面条件下大孔径闪烁仪(LAS)测算显热通量的计算法,测算白天大气非稳定层结状况下的显热通量(HLAS)。并采用通量印痕模型,对LAS法通量源区内由2台涡度相关系统观测得到的显热通量进行订正,得到源区内总显热通量值(HfEC)。分析LAS法与涡度相关法的显热通量测算或测定值的相关性,结果表明:HLAS与HfEC的线性相关系数可达0.93。说明在分析通量印痕和通量源区的基础上,采用LAS法测算低丘山地人工混交林显热通量具有较好的可行性。

In this study, by use of  the Large Aperture Scintillometer (LAS) method and the Eddy Covariance (EC) method respectively, the sensible heat flux under unstable stratification conditions was calculated over a mixed plantation in the hilly zone of the north China from May to September in 2009, which was  called HLAS and HEC  for short respectively. HEC  in the source area for LAS method (HfEC) was corrected and estimated with the application of footprint model. The result showed that the correlation coefficient between HfEC and HLAS was 0.93. It proved the feasibility of using LAS measurements to estimate H over the mixed plantations in the hilly zone, based on the analysis of the footprint and source area.

中图分类号: 

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