Evaluating prediction accuracy of two methods for tree carbon stocks of Korean pine plantation in Heilongjiang Province, China Compatible biomass models for main tree species with measurement error in Heilongjiang Province of Northeast China. Study on Estabilish and Estimate Method of Biomass Model Compatible with Volume Research on Establishment of Compa tibleModel System s forMorta lity and Cut Ra tes of Na tura l Spruce Forest in Tibet Compatible Tree Biomass Models for Natural White Birch (Betula platyphylla) in Northeast China Forest Area