Abstract:

Based on spatial overlay analysis to one map of forestry and land with the aid of GIS,forest management types in each plaque are effectively connected in one map of the two departments.With the concept of forest basic management attributes of the forestry department,butt-jointing of the range of forest land identified by the land department is taken into full account and forest management types are divided into forest land jointly determined by the both sides,forest land unilaterally determined by the forestry department,forest land on agricultural and unused land,forest land on construction land.The results showed that there is a smaller difference of forest land range jointly determined by the both sides in the mountainous county,the hilly county comes second,the plain and basin county has the biggest difference.The mountainous county has the smaller proportion in area and the plain county has the greater proportion in area in forest land unilaterally determined by the forestry department.There is the more forest land on agricultural and unused land in the plain county and the less forest land on agricultural and unused land in the hilly and mountainous counties.The truth is that the proportion of forest land area on construction land is highly relevant to greening level of local urban area.Generally,there is more forest land on construction land in plains and less forest land on construction land in mountainous area.

Key words: one map, management type of forest land, coordinative processing, spatial overlay analysis