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根据第七次黑龙江省森工林区森林资源清查成果,采用方精云等所建立的森林生物量和生产力估算模型,估算黑龙江省森工林区乔木林生物量和生产力分别为96699.68万t和8436.20万t/年。其中阔叶混交林生物量和生产力最高分别占63.62%和52.3%;按不同起源分龄组乔木林总生物量和总生产力划分,天然乔木林总生物量和总生产力为92718.24万t和7824.46万t/年,其中幼龄林和中龄林占67.2%;人工乔木林总生物量和总生产力为3979.01万t和611.74万t/年,其中幼龄林占30.91%。森工林区平均生物量为83.35t/hm2,低于全国平均水平86.07t/hm2。森工林区森林总生物量和总生产力为103722万t和9334.16万t/年。其中阔叶混交林生物量占森林总生物量59.44%,生产力占森林总生产力47.41%,具有绝对优势。
According to the results of the seventh forest resources inventory in Heilongjiang Forest Industrial Region, the biomass and productivity of forest in Heilongjiang Province were estimated using the estimation model of forest biomass and productivity set up by Fang Jingyun. The biomass and productivity of tree forest in Heilongjiang Forest were estimated to be 966.99668 million t and 84.362 million t / year. Among them, the highest biomass and productivity of broad-leaved mixed forests accounted for 63.62% and 52.3% respectively. According to the total biomass and total productivity of arbor forests in different age groups, the total biomass and total productivity of natural trees were 927182400 t and 78244600 t / year, of which young and middle-aged stands accounted for 67.2%. The total biomass and total productivity of artificial stands were 39,790,100 t and 6,117,400 t / year, of which young stands accounted for 30.91%. The average biomass of forest area was 83.35t / hm2, lower than the national average of 86.07t / hm2. Forest total forest gross biomass and total productivity of 103,722 million t and 93,341,600 t / year. Among them, the biomass of broad-leaved mixed forest accounted for 59.44% of total forest biomass and productivity accounted for 47.41% of total forest productivity, which had an absolute advantage.