ZZLAS型闪烁仪信号饱和界限的确定

doi:10.3969/j.issn.1000-6362.2017.07.004

中国农业气象 ›› 2017, Vol. 38 ›› Issue (07): 426-434.doi: 10.3969/j.issn.1000-6362.2017.07.004

ZZLAS型闪烁仪信号饱和界限的确定

张功，张劲松，施生锦，孟平，黄彬香，郑宁，李彦磊，才其骧

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；2.南京林业大学南方现代林业协同创新中心，南京 210037；3.中国农业大学资源与环境学院，北京 100093

收稿日期:2016-11-24 出版日期:2017-07-20 发布日期:2017-07-14
作者简介:张功（1989-），博士生,主要从事林业气象、林业生态等研究。E-mail：12720484zg@sina.cn
基金资助:
国家自然基金“闪烁仪法测算森林生态系统显热通量不确定性的研究”（31500363）；中央级公益性科研院所基本科研业务费“闪烁仪法测算区域水热通量不确定性的研究”（CAFYBB2016QB001）

Determination of Saturation Lines of ZZLAS-Type Scintillometer

ZHANG Gong , ZHANG Jin-song , SHI Sheng-jin , MENG Ping , Huang Bing-xiang ,ZHENG Ning , LI Yan-lei , CAI Qi-xiang

1. Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091,China;2.Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037;3.College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100093

Received:2016-11-24 Online:2017-07-20 Published:2017-07-14

摘要/Abstract

摘要： 闪烁仪能够快速准确地测量区域尺度水热通量，中国产ZZLAS型闪烁仪因测量准确、操作方便、价格低廉等优势在国内具有广阔的应用前景。为进一步提高ZZLAS型闪烁仪的测量精度，推广其在水热通量等研究领域的应用，本文于2014年8-9月，以BLS900为参考标准，分别选择孔径为0.15m和0.075m的ZZLAS型闪烁仪，在平坦均匀的草原下垫面进行信号饱和测定，确定ZZLAS型闪烁仪的饱和界限；并于2014年9-10月，用孔径为0.15m和0.075m的ZZLAS型闪烁仪在复杂的农田下垫面对饱和界限进行验证。结果表明，ZZLAS型闪烁仪的强饱和界限为0.359，弱饱和界限为0.099。验证结果显示，在上述饱和界限条件下，孔径为0.075m的ZZLAS型闪烁仪饱和率最大，为24.58%。实验所得的饱和界限可成为ZZLAS型闪烁仪饱和判断的参考，且在此饱和界限条件下，ZZLAS型闪烁仪发生的饱和现象多属弱饱和现象，可以通过数学方法进行修正。

关键词: 显热通量, 蒸散, 区域尺度, 湍流强度

Abstract: Scintillometers were used to precisely measure heat fluxes quickly at a regional scale, and the ZZLAS-type scintillometer made in China possess a wide prospect of application in China due to its accurate measurements, convenient operation and lower price. For the purpose of improving the accuracy of ZZLAS-type scintillometer measurement and promote its application in the field of heat fluxes. This paper set BLS900 as a basement, and chose ZZLAS-type scintillometer with 0.15m and 0.075m apertures for the saturation lines observations under grassland with flat and uniform surface from August to September 2014. From September to October 2014, the ZZLAS-type scintillometers with aperture of 0.15m and 0.075m were used to test the obtained saturation lines with a complex farmland surface. The results revealed that the strong saturation line was 0.359 and the weak saturation line was 0.099. With these lines, the ZZLAS-type scintillometer with 0.075m aperture showed the highest saturation rate of 24.58%. Results showed that the obtained saturation lines could be used as a reference for the saturation judgment of the ZZLAS-type scintillometer; with the lines most saturation phenomenon of the ZZLAS-type scintillometer is slightly saturated and can be corrected through mathematical methods.

Key words: Sensible heat flux, Evapotranspiration, Regional area, Turbulence intensity

张功，张劲松，施生锦，孟平，黄彬香，郑宁，李彦磊，才其骧. ZZLAS型闪烁仪信号饱和界限的确定[J]. 中国农业气象, 2017, 38(07): 426-434.

ZHANG Gong,ZHANG Jin-song,SHI Sheng-jin,MENG Ping,Huang Bing-xiang,ZHENG Ning,. Determination of Saturation Lines of ZZLAS-Type Scintillometer[J]. Chinese Journal of Agrometeorology, 2017, 38(07): 426-434.

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ZZLAS型闪烁仪信号饱和界限的确定

Determination of Saturation Lines of ZZLAS-Type Scintillometer

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