ORYZA2000模型中辐射模块的评估及改进  

Assessment and improvement of radiation module in model ORYZA2000

作　　者：黄笑颖 李旭辉[1,2] 刘寿东[1] 张弥[1] 王伟[1] 李刚[3] 越昆[1] 汪天颖 于洲[1] 

机构地区：[1]南京信息工程大学大气环境中心,江苏南京210044 [2]耶鲁大学森林环境学院,美国纽黑文06520 [3]南京农业大学农学院,江苏南京210095

出　　处：《江苏农业学报》2016年第4期803-809,共7页Jiangsu Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(31200377);江苏高校优势学科建设工程项目(PAPD);教育部长江学者和创新团队发展计划项目(PCSIRT)

摘　　要：利用大田实测数据对ORYZA2000模型中的辐射模块进行了评估与改进。结果表明:水稻产量和地上部分干质量对散射辐射比例变化敏感。但是模型模拟的1 d不同时刻太阳辐射中散射辐射比例与实测值相比存在较大误差,傍晚时刻的均方根误差可达0.15。而该模拟偏差(模拟值与观测值的差值)与大气透射系数呈二次曲线的关系,利用模拟偏差与大气透射系数之间的关系改进了模型对散射辐射比例的模拟。改进的辐射模块对1 d 3个时刻散射辐射比例模拟的均方根误差分别缩小了0.01、0.02和0.02。该结果可为ORYZA2000模型的改进提供参考。The radiation module in model ORYZA2000 for rice yield simulation was assessed and improved using the observed data. The results showed that rice yield and above-ground dry weight were sensitive to the changes of diffuse radiation fraction in global solar radiation. Big errors between simulated value of diffuse radiation fraction and observed value were found in different time points of a day; the root mean square error even reached 0. 15 in late afternoon. A quadratic relationship between the difference of simulated value and observed value and the atomospheric transmission coefficient improve the simulation of radiation module. The root mean square error of diffuse radiation fraction simulated by the improved model was decreased by 0. 01,0. 02,and 0. 02 in three time points of a day,respectively.

关 键 词：ORYZA2000 作物模型 太阳辐射 散射辐射 

分 类 号：S126[农业科学—农业基础科学]