Abstract：According to climate data and forest resource data,the forest potential productivity of Linkou forestry bureau in Heilongjiang Province was calculated by using Miami model and Thornthwaite Memorial model.The relationship among potential productivity,temperature and precipitation was accepted,and the real forest productivity was evaluated.It shows that potential forest productivity in LinKou forest bureau is 9.38<sup>-1</sup>2.64 m<sup>3</sup>·hm<sup>-2</sup>·a<sup>-1</sup>.The real forest productivity is 2.22 m<sup>3</sup>·hm<sup>-2</sup>·a<sup>-1</sup>,17.56-23.67 percent of potential productivity.The main reason of the low productivity is the high proportion of young age forest.The forest potential productivity of study area is in a middle level compared with those of other regions,and is lower than those of the same latitude regions in Heilongjiang Province.The results could be used as an important reference in working out the cultivation plan of plantation,optimizing forest structure and protecting forest resource.
2007, Vol. 5 
