Establishment and Application of Integrated Assessment System on Cold Resistance of Different Zenia insignis Provenances The Biomass and Solar Energy Utilization Efficiency in Zenia insignis Forest STUDY ON PHYSIOLOGICAL REACTION OF Zenia insignis Chun to ACID RAIN AND IT‘‘‘‘S MECHANISM Genetic TraitVariation of Zenia insignis GeographicalProvenance in Seedling Stage STUDY OF ZENIA INSIGNIS CHUN. COMPREHENSIVE UTILIZATION Cold Resistance of Zenia insignis from Different Provenances