论文部分内容阅读
森林的蓄积量与生物量评估是森林监测中的重要内容。我国有关森林蓄积方面的资料较为丰富,但是生物量方面的资料较少,因此森林蓄积量与生物量之间转换模型的研究具有重要意义。文中依据在塔里木河下游所伐倒的40棵胡杨样品,首先利用微积分模拟计算了蓄积量,其次用称重法测得胡杨的生物量,最后利用3个模型将胡杨的蓄积量与生物量的关系进行拟合,并将这3个模型的精确度进行对比分析。得出:B=c Vd模型的模拟效果最好,所建立的模型为:B=291.459V1.183。
Forest stock and biomass assessment is an important part of forest monitoring. The data on forest accumulation in our country are abundant, but there is less data on biomass. Therefore, the study on the conversion model between forest volume and biomass is of great significance. Based on the 40 Populus euphratica cuttings sampled in the lower reaches of the Tarim River, the accumulation of Populus euphratica was first calculated by calculus, and the biomass of Populus euphratica was measured by the Weighing method. Finally, three models were used to compare Populus euphratica volume and biomass The relationship between the fitting, and the accuracy of these three models for comparative analysis. It is concluded that the simulation result of B = c Vd model is the best. The established model is: B = 291.459V1.183.