中国农业气象 ›› 2015, Vol. 36 ›› Issue (01): 17-23.doi: 10.3969/j.issn.1000-6362.2015.01.003

• 论文 • 上一篇    下一篇

Penman Monteith模型中水稻冠层阻力的模拟

赵华,申双和,华荣强,陶苏林,张雪松   

  1. 1江苏省农业气象重点实验室/气象灾害预警预报与评估协同创新中心,南京信息工程大学,南京210044;2南京市溧水区气象局,南京211200
  • 收稿日期:2014-06-04 出版日期:2015-02-20 发布日期:2015-05-21
  • 作者简介:赵华(1988-),女,河北唐山人,硕士生,主要从事农业气象研究。Email:zzhh252449916@163.com
  • 基金资助:

    国家重点基础研究发展计划(“973”计划)项目(2010CB950702);公益性行业(气象)科研专项(GYHY201106043;GYHY201306046);2012年江苏省普通高校研究生科研创新计划项目(CXZZ12_0503);江苏高校优势学科建设工程(PAPD)项目

Simulation of Canopy Resistance for Paddy Rice Based on PenmanMonteith Model

ZHAO Hua,SHEN Shuang he,HUA Rong qiang,TAO Su lin,ZHANG Xue song   

  1. 1Jiangsu Key Laboratory of Agricultural Meteology/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science& Technology,Nanjing210044,China;2Lishui Meteoroloyical Bureau,Nanjing211200
  • Received:2014-06-04 Online:2015-02-20 Published:2015-05-21

摘要: 针对PenmanMonteith模型冠层阻力的参数化问题,以南京地区2012-2013年水稻为研究对象,参照Jarvis的气孔阻力模型,建立了水稻的冠层阻力rc与气象、环境因子(太阳净辐射、饱和水汽压差、气温和土壤水分)的关系模型,并以蒸渗仪实测蒸散量资料为对照,对模型的精度进行检验。结果表明,所建水稻冠层阻力模型的拟合度2012年为0.911,2013年为0.810,将模型应用于Penman Monteith公式计算稻田蒸散量,两年的拟合精度分别为0.967和0.953,能较精确地估算稻田耗水量。对模型的敏感性分析表明,饱和水汽压差的拟合参数a2对模型的影响最显著。模型在一定程度上解决了冠层阻力计算复杂,观测量大且易产生观测误差的问题,可作为稻田蒸散的计算方法之一。

关键词: 冠层阻力, 蒸渗仪, 水稻, 气象因子, 环境因子, 拟合模型

Abstract: A model simulating the relationship between rice canopy surface resistance(rc)and meteorological as well as environmental factors(net solar radiation,air temperature,saturated vapour pressure deficit and soil moisture)was established in Nanjing area from 2012 to 2013.Considering the canopy surface resistance parameterization of Penman Monteith formula,this model specifically referenced Jarvis stomatal resistance model and compared the simulated results with observed evapotranspiration by lysimeter in order to check the accuracy of the model.The results showed that the agreement indices of the rice canopy surface resistance model were 0.991 for 2012 and 0.810 for 2013.It was shown that the model was capable of modeling paddy field water consumption with agreement index of 0.967 and 0.953,respectively when combining the model with PenmanMonteith formula.Also,sensitivity analysis of the model showed that saturated vapour pressure deficit(a2)had a great impact on the model.As a result,this model can help simplify the calculation of canopy resistance and avoid errors in observation,which can be used as one of the ways to calculate paddy field water consumption.

Key words: Canopy resistance, Lysimeter, Paddy rice, Meteorological factors, Environmental factors, Model