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应用生态学报 ›› 2016, Vol. 27 ›› Issue (5): 1353-1358.doi: 10.13287/j.1001-9332.201605.001

• 目次 • 上一篇    下一篇

基于东北温带落叶阔叶林通量数据的BEPS 模型参数优化

卢 伟1, 范文义1*,田 甜2   

  1. 1东北林业大学林学院, 哈尔滨 150040;
    2国家林业局北方航空护林总站, 哈尔滨 150040
  • 收稿日期:2015-09-23 出版日期:2016-05-18 发布日期:2016-05-18
  • 通讯作者: fanwy@163.com
  • 作者简介:卢 伟,女,1988年生,博士研究生. 主要从事林业遥感及碳循环模型研究. E-mail: sanpangzi1228@126.com
  • 基金资助:
    本文由国家“十二五”科技支撑计划项目(2011BAD37B01)和中央高校基本科研业务费专项资金项目(2572014AA27)资助

Parameter optimization of BEPS model based on the flux data of the temperate deciduous broad-leaved forest in Northeast China.

LU Wei1, FAN Wen-yi1*, TIAN Tian2   

  1. 1College of Forestry, Northeast Forestry University, Harbin 150040, China;
    2Northern Aerial Forest Fire Protection Station of State Forestry Administration, Harbin 150040, China
  • Received:2015-09-23 Online:2016-05-18 Published:2016-05-18

摘要: 控制其他参数为经验常数,利用迭代方法对主要光合作用参数最大羧化速率(Vc max) 及最大电子传递速率(Jmax)进行不同数值组合,将得到的多组模拟结果的逐日总初级生产力(GPP)分别与东北帽儿山落叶阔叶林的通量观测数据进行比较,实现对小时步长BEPSHourly模型Vc maxJmax的参数优化.结果表明: 对于东北温带落叶阔叶林,当Vc max为41.1 μmol·m-2·s-1Jmax 为82.8 μmol·m-2·s-1时,模拟的2011年逐日GPP与观测数据比较的均方根误差(RMSE)最小,为1.10 g C·m-2·d-1,R2最高,为0.95.经过光合作用参数Vc maxJmax优化后,BEPSHourly模型能更好地模拟GPP的季节变化.

Abstract: Keeping other parameters as empirical constants, different numerical combinations of the main photosynthetic parameters Vc max and Jmax were conducted to estimate daily GPP by using the iteration method in this paper. To optimize Vc max and Jmax in BEPSHourly model at hourly time steps, simulated daily GPP using different numerical combinations of the parameters were compared with the flux tower data obtained from the temperate deciduous broad-leaved forest of the Maoershan Forest Farm in Northeast China. Comparing the simulated daily GPP with the observed flux data in 2011, the results showed that optimal Vc max and Jmax for the deciduous broad-leaved forest in Northeast China were 41.1 μmol·m-2·s-1 and 82.8 μmol·m-2·s-1 respectively with the minimal RMSE and the maximum R2 of 1.10 g C·m-2·d-1 and 0.95. After Vc max and Jmax optimization, BEPSHourly model simulated the seasonal variation of GPP better.