中国农业气象 ›› 2011, Vol. 32 ›› Issue (增刊): 135-139.

• 论文 • 上一篇    下一篇

基于GIS的冬小麦动态估产模型研究

栾青,马雅丽,武永利,李伟伟,相栋   

  1. 山西省气候中心,太原030002;山西省侯马市气象局,侯马043010
  • 出版日期:2011-10-31 发布日期:2011-11-24
  • 基金资助:

    山西省科技攻关计划项目(041089)

Dynamic Winter Wheat Yield Estimation Model Based on GIS
——A Case Study of Yuncheng City in Shanxi Province

LUAN Qing,MA Yali,WU Yongli,LI Weiwei,XIANG Dong   

  1. Shanxi Climate Centre, Taiyuan030002, China; Meteorological Bureau of Houma,Shanxi Province, Houma043010
  • Online:2011-10-31 Published:2011-11-24

摘要: 利用1982-2008年运城市各县(市)的气象观测资料及冬小麦单产资料,在ArcGIS地理信息系统软件下提取耕地区域的气象要素信息,在SPSS11.5统计软件中以旬为单位建立了分县小尺度及地区大尺度冬小麦动态估产模型,并利用2008年的实测资料对模型进行了验证。结果表明:分县估产模型估产精度较低,其估产相对误差绝对值在0.2%~20.6%,变幅较大;地区大尺度估产模型估产精度较高,其估产相对误差绝对值在0.3%~4.7%,具有较高的稳定性,适合于实际业务运行。

关键词: GIS, 冬小麦, 动态估产模型

Abstract: Based on the census data of winter wheat yield and meteorological observation data from 1982 to 2008, the information of meteorological elements in cultivated land was extracted by ArcGIS. A ten day dynamic winter wheat yield estimation model from county scale to region scale was established on SPSS11.5. These models were tested by winter wheat yield data of 2008. The results showed that the relative error absolute value of county scale model was between 0.2% and 20.6%, and the estimation accuracy of county scale model was low. The relative error absolute value of region scale model was between 0.3% and 4.7%. The error is lesser while the stability is high. Therefore it was suitable for actual business operation.

Key words: GIS, Winter wheat, Dynamic yield estimation model