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澄清毛竹(Phyllostachys edulis)生物量与胸径之间的异速生长关系及毛竹林生物量密度与叶面积指数之间的关系有助于准确估算毛竹林生物量。本文结合异速生长关系和地统计方法对中尺度毛竹林生物量进行估算。利用收获法在武夷山南麓毛竹林分布区砍伐103棵标准竹,并用冠层分析仪获取毛竹林叶面积指数,建立毛竹生物量与胸径、林分生物量密度与叶面积指数的异速生长关系;再利用地统计方法对黄坑镇毛竹林生物量的空间分布进行模拟。结果表明:武夷山南麓毛竹单株生物量与胸径之间存在明显的幂函数关系(R~2=0.585,P=0.002);毛竹林生物量密度与叶面积指数间也存在着显著的幂函数关系(R~2=0.525,P=0.002);利用建立的异速生长方程和地统计方法对黄坑镇毛竹林地上生物量的模拟结果表明,黄坑镇毛竹林平均地上生物量密度为53.49 t·hm~(-2),全镇毛竹林地上生物量约为0.62 Tg。
Clarifying the allometric relationships between Phyllostachys edulis biomass and DBH and the relationship between biomass and leaf area index of Phyllostachys edulis could help to accurately estimate the biomass of Phyllostachys edulis. In this paper, the allometric relationships and geostatistics methods were used to estimate the biomass of mesotrophic bamboo forests. Using the harvesting method, 103 standard bamboos were cut in the distribution area of Moso bamboo in the south of Wuyishan Mountain, and the leaf area index of Moso bamboo forest was obtained by canopy analyzer. The relationship between biomass and DBH, stand biomass density and LAI The spatial distribution of biomass of Phyllostachys pubescens forest in Huangkeng town was simulated by geostatistics. The results showed that there was a significant power function between the bamboo biomass and DBH in the south of Wuyishan Mountain (R ~ 2 = 0.585, P = 0.002). There was also a significant power function between biomass and leaf area index (R ~ 2 = 0.525, P = 0.002). The simulation results of aboveground biomass of Phyllostachys pubescens forest in Huangkeng town by using allometric method and geostatistics method show that the average aboveground biomass density of Phyllostachys pubescens forest in Huangkeng town is 53.49 t · hm ~ (-2). The aboveground biomass of Phyllostachys pubescens forest is about 0.62 Tg.