Abstract: Plant climatic productivities of 16 weather stations around this region were calculated from 1971 to 2000 by Thornthwaite—Memorial.Mathematical model which reflected the relationship between plant climatic productivity and geographic factor was established.Visualization of plant climatic productivities for 1km grid was carried on by using GIS.This estimation result totally and systematic reflected the space distribution status of plant climatic productivity in different date in Bayannoer.The common point was that the plant climatic productivity declined from southeast to northwest.The different point was that the highest plant climatic productivities were from 1991 to 2000 because of more precipitation and higher temperature,the middle plant climatic productivities were from 1971 to 1980 because of more precipitation and lower temperature,the lowest plant climatic productivities were from 1981 to 1990 because of small precipitation and neutral temperature.

Key words: Grid, Plant climatic productivity, GIS