Biomass and Nutrient Distributions in Central Oregon Second-Growth Ponderosa PineEcosystems

摘要

We investigated the distributioin of biomass and nurtrients in second-growthponderosa pine (Pinus ponderosa Dougl. ex Laws.) ecosystems in central Oregon. Destructive sampling of aboveground and belowground tree biomass was carried out at six sites in the Deschutes National Forest; three of these sites also were intensively sampled for biomass and nutrient concentrations of the soil, forest floor, residue, and shrub components. Tree biomass equations were developed that related component biomass to diameter at breast height and total tree height.