Chin J Plan Ecolo ›› 2014, Vol. 38 ›› Issue (3): 219-230.doi: 10.3724/SP.J.1258.2014.00019

• Research Articles •     Next Articles

Modelling the effects of changes in solar radiation on gross primary production in subtropical evergreen needle-leaf plantations

LI Deng-Qiu1*, ZHOU Yan-Lian2**, JU Wei-Min1, WANG Hui-Min3, LIU Yi-Bo1, and WU Xiao-Cui1   

  1. 1International Institute for Earth System Science, Nanjing University, Nanjing 210023, China;

    2School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China;

    3Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2013-11-04 Revised:2013-12-30 Online:2014-02-27 Published:2014-03-01
  • Contact: ZHOU Yan-Lian


Aims Solar radiation is the energy source of terrestrial ecosystem carbon and water cycles. Observation shows that solar radiation has experienced noticeable variations in recent decades and significantly impacted on plant photosynthesis. Our objective was to investigate the impacts of changes in solar radiation on gross primary production (GPP) at the Qianyanzhou eddy tower site in subtropical forest in China.
Methods We first established the relationship between diffuse radiation fraction and clearness index based on the observed solar radiation and diffuse radiation data. Then, a two-leaf ecological process model, the Boreal Ecosystem Productivity Simulator (BEPS), was used to simulate the impacts of different changes in solar radiation on shaded GPP, sunlit GPP, and canopy GPP in the typical subtropical evergreen needle-leaf plantations.
Important findings Results showed that the effects of changes in solar radiation on shaded leaves predominantly determined the changes in the canopy photosynthesis as the shaded leaves contributed 67% to the total GPP. The impacts of changes in solar radiation on GPP varied inter-annually due to variations in the intensity and distribution of solar radiation from year to year. The GPP during 2003–2005 reached maximum when the solar radiation changed by –5.44%, –1.83%, and 6.26% in each year, respectively. Increased solar radiation enhanced the GPP during May and June, but reduced the GPP from July through September. The shaded leaves responded to changes in radiation differently in different seasons, and the sunlit and shaded leaves had different responses in the same season. Consequently, there were patterns of apparent offset in the total GPP and reduced sensitivity to changes in solar radiation on an annual basis. The changes in solar radiation had the smallest impact on GPP when the clearness index was at 0.43.

No related articles found!
Full text



[1] Hu Shi-yi. Fertilization in Plants IV. Fertilization Barriers Inoompalibilty[J]. Chin Bull Bot, 1984, 2(23): 93 -99 .
[2] JIANG Gao-Ming. On the Restoration and Management of Degraded Ecosystems: with Special Reference of Protected Areas in the Restoration of Degraded Lands[J]. Chin Bull Bot, 2003, 20(03): 373 -382 .
[3] . [J]. Chin Bull Bot, 1994, 11(专辑): 65 .
[4] ZHANG Xiao-Ying;YANG Shi-Jie. Plasmodesmata and Intercellular Trafficking of Macromolecules[J]. Chin Bull Bot, 1999, 16(02): 150 -156 .
[5] Chen Zheng. Arabidopsis thaliana as a Model Species for Plant Molecular Biology Studies[J]. Chin Bull Bot, 1994, 11(01): 6 -11 .
[6] . [J]. Chin Bull Bot, 1996, 13(专辑): 13 -16 .
[7] LEI Xiao-Yong HUANG LeiTIAN Mei-ShengHU Xiao-SongDAI Yao-Ren. Isolation and Identification of AOX (Alternative Oxidase) in ‘Royal Gala’ Apple Fruits[J]. Chin Bull Bot, 2002, 19(06): 739 -742 .
[8] Chunpeng Yao;Na Li. Research Advances on Abscisic Acid Receptor[J]. Chin Bull Bot, 2006, 23(6): 718 -724 .
[9] Li Wang, Qinqin Wang, Youqun Wang. Cytochemical Localization of ATPase and Acid Phosphatase in Minor Veins of the Leaf of Vicia faba During Different Developmental Stages[J]. Chin Bull Bot, 2014, 49(1): 78 -86 .
[10] QIU Dong-Liang, LIU Xing-Hui, GUO Su-Zhi. Effects of Simulated Acid Rain Stress on Gas Exchange and Chlorophyll a Fluorescence Parameters in Leaves of Longan[J]. Chin J Plan Ecolo, 2002, 26(4): 441 -446 .