自然资源学报

自然资源学报 ›› 2007, Vol. 22 ›› Issue (5): 673-682.doi: 10.11849/zrzyxb.2007.05.001

• 理论探讨 •    下一篇

基于试验观测的光合有效辐射特征分析

马金玉, 刘晶淼, 李世奎, 梁宏, 姜朝阳, 王炳忠   

  1. 中国气象科学研究院, 北京 100081
  • 收稿日期:2007-03-01 修回日期:2007-06-18 出版日期:2007-10-25 发布日期:2007-10-25
  • 通讯作者: E-mail:pract@tom.com;liangh@cams.cma.gov.cn E-mail:pract@tom.com;liangh@cams.cma.gov.cn
  • 作者简介:马金玉(1982-),女,云南大理人,硕士,主要从事农业气候和生态研究。
  • 基金资助:

    国家自然科学基金项目(40575057);国家科技部社会公益研究专项“三大平原粮食安全气象评估预警新技术研究”(2005DIB4J107).

Study on the Features of the Photosynthetic Active Radiation (PAR) with Experimentations and Measurements

MA Jin-yu, LIU Jing-miao, LI Shi-kui, LIANG Hong, JIANG Chao-yang, WANG Bing-zhong   

  1. Chinese Academy of Meteorological Science, Beijing 100081, China
  • Received:2007-03-01 Revised:2007-06-18 Online:2007-10-25 Published:2007-10-25

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被引次数

74 | 15

摘要： 光合有效辐射是生物、生态和农业常用的重要参数,常规气象资料中没有该资料,实测结果也比较少,以往多采用经验气候学计算获得。论文基于固城站观测辐射资料,对光合有效辐射特征分析的结果表明:光合有效辐射（PAR）占总辐射（Q）的比值(ηPAR)分布呈近似钟型,有60%的比值分布在0.35～0.45之间。ηPARPARPARPARPAR)与Q的关系为:全年QPAR=0.40Q,生长季QPAR=0.41Q,这一结果与以往国内一些实测结果相近。论文用此值重新评估华北平原光合生产潜力的结果表明,以往估算光合生产潜力常采用ηPAR

关键词: 太阳总辐射, 光合有效辐射, 光合有效辐射占太阳辐射的比值, 光合生产潜力

Abstract: The photosynthetic active radiation(QPAR)is an important parameter in biology,ecology and agriculture,but in routine meteorological data no QPAR is observed and the observation data are also relatively less.So,the previous calculation of QPAR often uses experiential climatology method.In this paper,the characteristics of photosynthetic active radiation are analyzed by using radiation data from Gucheng Experimental Station.The results show that the ratio of photosynthetic active radiation to global radiation(η PAR)presents an approximate campanulas distribution with 60% ofη PAR ranging between 0.35-0.45.The tendency of daily variation forη PAR in sunny day presents a single-peak pattern that theη PAR is high at noon and low in morning and evening.At the same time,in cloudy day,the daily variation of theη PAR fluctuates while the cloud cover changes,and theη PAR in cloudy day is higher than that in sunny day.In addition,the yearly variation ofη PAR presents a tendency that it is lower in winter and spring but higher in summer and autumn.QPAR and Q show an evident tendency of single-peak patterns.The mean annual value ofη PAR is 0.40 and 0.41 during growth period.The relationships of QPAR and Q are as follows: for a whole year,QPAR=0.40Q;and for a growth period,QPAR=0.41Q.Generally,the result is similar to some measurement results in China.The potentiality of photosynthetic production is evaluated by using theη PAR in this paper.The results shows that the potentiality of photosynthetic production evaluated previously by usingηPAR(0.47～0.50) is obviously higher than the measurement results.In addition,the causes of the variation of the photosynthetic active radiation are related to the solar altitude,cloud cover,water vapor and dust in atmosphere.In conclusion,some causes are very complicated,so further studies are needed.

Key words: global radiation, photosynthetic active radiation, the ratio of photosynthetic active radiation to global radiation, photosynthetic production

中图分类号: 

  • P422