欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2005, Vol. ›› Issue (7): 741-746.

• 研究报告 • 上一篇    下一篇

区域气候模式与作物模型联接的影响评估模拟实验及不确定性分析

熊伟, 许吟隆, 林而达, 田展   

  1. 中国农业科学院农业环境与可持续发展研究所, 北京, 100081
  • 收稿日期:2004-09-07 修回日期:2004-11-23 出版日期:2005-07-10
  • 通讯作者: 熊伟,男,1974年生,博士.主要从事作物模型和气候变化影响研究,发表论文7篇.E-mail:Xiongw@ami.ac.cn
  • 基金资助:
    国家“十五”科技攻关资助项目(2004-BA611B-02-02).

Simulation experiment of RCM and crop model combination and its uncertainty assessment

XIONG Wei, XU Yinlong, LIN Erda, TIAN Zhan   

  1. Institute of Agro-Environment and Sustainable Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2004-09-07 Revised:2004-11-23 Online:2005-07-10

摘要: 利用英国Hadley中心开发的区域气候模式RCM-PRECIS(网格分辨率50 km×50 km),与经过田间试验资料和历史气候资料验证和校准过的CERES系列作物模式相结合,就区域气候模式与作物模式联接的影响评估方法及其不确定性进行了评估.结果表明,相对于大气环流模型来说,区域气候模式与作物模型的结合省去了随机天气发生器的中间环节,减小了不确定性产生的因素.在站点模拟上,该方法在平原地区的模拟效果较好,而山区的模拟效果较差,但如果能用实测天气数据对模拟的天气数据进行验证,模拟效果明显提高.在区域模拟上,该方法可以较好地体现出产量变化的空间分布规律,但由于空间数据的限制,模拟产量与实际产量的偏差较站点水平要大.

关键词: 种间联结, X2检验, 联结系数, 2×2联列表, 人工林

Abstract: Combining RCM-PRECIS (Resolution 50 km?50 km) regional climate model with the CERES crop model validated and calibrated with field experiment and observed weather data,impacts of climate change on agriculture and the uncertainty of the method were estimated in this paper.The results showed that compared with GCMs,RCM combined with the crop model could omit the intercurrent process of stochastic weather generator and decrease the assessment uncertainty.Site scale simulation indicated that the method was effective in plain areas,while not so good in mountain areas,which could be improved greatly if the weather data were validated with the observed data.Applied at regional scale simulation,the method could reflect the yield distribution effectively.But uncertainty increased due to limitation of spatial data.

Key words: Interspecific association, χ2-test, Association coefficient, 2×2 contingency table, Plantation

中图分类号: