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一、调查地区的地理位置及工作方法调查地区选在小兴安岭的新青林业局,完达山的穆棱林业局和长白山的松江河林业局。调查林分均属灌木阔叶红松林。调查树种有红松、云杉、臭松、椴树、枫桦和色木。调查内容有心腐率和心腐材积。心腐率是指心腐株数占调查株数的百分比,而心腐材积是指病腐木心腐部分材积。心腐率通过新采伐迹地的伐根调查取得。心腐材积则通过伐区伐倒木调查及贮木场造材获取。在调查中量测了心腐木的心腐长度、心腐直径及胸径。所谓木材心腐是指木材颜色有了明显改变,其材质发生变化的部分。
I. Geographical location and working methods of the surveyed areas The survey area selected Xinqing Forestry Bureau in Xiaoxing’anling, Muling Forestry Bureau in Wandashan and Songjianghe Forestry Bureau in Changbai Mountain. Survey stands are shrubs broad-leaved Korean pine forest. The survey species are Korean pine, spruce, stink pine, lime tree, maple birch and color wood. The contents of the investigation of heart rate and heart rate of corrosion volume. Corruption rate refers to the number of strains of the heart of the survey, the percentage of the number of strains, and the volume of heart rot is the volume of rotten wood heart rot. The rate of heart erosion is obtained through the rooting survey of new cuttings. Corruption of the volume of wood is cut through the cutting area of timber investigation and timber storage site to obtain. In the survey measured heart rot wood rot length, heart rot diameter and diameter. The so-called wood heart wood refers to a significant change in the color of the wood, the material changes in the part.