Spatial analysis of soil suitability for plantation development for suitable tree species in Markham Valley, Morobe Province

Abstract

Soil suitability mapping is a vital component in the functions of Forest Plantation. Annual work programs and operations in plantation establishment, management, harvesting, and roads maintenance require soil map information to guide what type of activity or program is appropriate to apply. This study aims at mapping soil suitability for plantation development of selected forest tree species in the Markham Valley. It plays an especially significant role in determining what type of tree or forest can grow in what type of soil or land area in Markham Valley. GIS and Remote Sensing were used for spatial data analysis, to demonstrate simple techniques deployed in soil suitability mapping. Different land characteristics that contribute to soil suitability of selected tree species were identified for soil suitability potential areas in the Markham Valley. From the analysis the less suitable sites to more suitable sites were demarcated for suitable tree species. Within the study region, 909.35 sq. km. of land was identified as highly suitable for growing appropriate tree species. The map produced is recommended for adoption by the PNGFRI managers and officers in their management plans and operations in the Valley. It may also be especially useful to non-foresters, landowners and private sector players involved in plantation or woodlot development in the Markham Valley and similar areas.