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本文对卧龙自然保护区60年代人工栽培的四川红杉林分生物量和生产力进行了测定和研究。按“径阶标准木法”和“样方收割法”分别调查了乔木层、灌木层、草本地被层和枯枝落叶层。据调查数据,应用“相对生长法则”建立了估测乔木层单株木各器官干重的回归方程,相关系数均达到极显著水平。文中还研究了林分平均净生产量和产量结构。结果表明:四川红杉人工林分生物量平均为135.17t/ha,净生产量为10820.52kg/ha·a,其中乔木层生物量为113.57t/ha,占林分生物量的84.02%,净生产量为8951.63kg/ha·a,占林分净生产量的82.73%。林分中灌木层、草本层的生物量和净生产量分别占林分生物量和净生产量的1.01%和3.16%、4.44%和13.86%。枯枝落叶层现存量为14.23t/ha,占林分的10.53%,林分年凋落物量和枯损物量为3996.14kg/ha·a,占林分生产力的36.93%。
In this paper, we measured and studied the biomass and productivity of S.c Sequoia forests cultivated in Wolong Nature Reserve in the 1960s. The tree layer, shrub layer, herb layer and litter layer were surveyed according to the “standard method of radial order” and the “quadrat method of harvesting”. According to the survey data, a regression equation was established using the “relative growth rule” to estimate the dry weight of each organ of the arbor layer. The correlation coefficients reached a very significant level. The paper also studied the average stand net production and yield structure. The results showed that the average biomass of Artificial Sequoia in Sichuan was 135.17t / ha and the net production was 10820.52kg / ha · a, in which the biomass of tree layer was 113.57t / ha, accounting for 84.02% of the stand biomass Production is 8951.63kg / ha · a, accounting for 82.73% of net production. The biomass and net production of shrub layer and herb layer in forest stand accounted for 1.01% and 3.16%, 4.44% and 13.86% of stand biomass and net production, respectively. The existing litter layer was 14.23t / ha, accounting for 10.53% of the stand. The annual litterfall and the amount of litter were 3996.14kg / ha · a, accounting for 36.93% of the stand productivity.