Optimal arrangement of plantation for precious legume forest species in Fujian by GIS technology

Based on the demands of precious legume forest species，such as Ormosia henryi，O. hosiea and Dalbergia odorifera habit and taking the woodland，orchard，meadow，and some unused land in Fujian as the research object，a suitability evaluation index system of precious legume forest species was established. The index system included 14 relevant factors form four aspects: topography，climate，soil and social economic. Suitable land resources for precious legume forest species were assessed by GIS technology，integrated with correctional weighting-multiplication model. On this basis，non-planting areas were extracted from the land-use map，the layout of precious legume forest species in Fujian was optimized based on the principle of＂suitable trees plantation on land＂with integrated technology of the advantages of index method and K means clustering analysis method. The results of regionalization included three grades of preferential planting area，secondary preferential planting area and general planting area. The results of above partitions were analyzed and optimizing arrangement map of precious Legume species plantation in Fujian was drew by GIS technology.