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摘要: 为准确评估浙江省森林植被生物量,以2009年浙江省森林资源连续清查第一手野外调查数据为数据源,以样地为评估基本单元,采用单株生物量模型法(乔木,毛竹Phyllostachys edulis,杂竹,下木和灌木),单位面积生物量模型法(草本)和单位面积生物量法(矮化乔木林、灌木经济林),测算了样地水平的森林植被生物量。在此基础上,运用系统抽样统计方法,将样地水平微观数据转换到全省宏观尺度,评估了全省总体的森林植被生物量,提供了主要评估结果的估计精度和估计区间。结果显示:2009年,浙江省森林植被总生物量为37 010.732 104 t。主要森林植被类型中,乔木林群落为29 096.269 104 t,竹林群落3 762.964 104 t,灌木林群落1 747.953 104 t。在P<0.05的可靠性保证下,森林植被总生物量估计精度为96.64%,估计区间为35 767.171 104 ~ 38 254.293 104 t;乔木林群落95.58%,估计区间为27 810.214 104 ~ 30 382.324 104 t;竹林群落89.13%,估计区间为3 353.930 104 ~ 4 171.998 104 t;灌木林群落90.00%,估计区间为1 573.158 104 ~ 1 922.748 104 t。可见,采用以上方法测算的浙江省各类森林植被生物量评估结果,均有很高的精度保证和较好可信度。表3参26Abstract: For an accurate assessment of forest biomass in Zhejiang Province,forest vegetation biomass was calculated at the plot level based on 2009 forest inventory data. Each plot was regarded as a basic unit with biomass calculated using the single tree biomass model and the biomass per unit area model with biomass per unit area methodology. Systematic sampling was utilized to estimate the overall provincial forest vegetation biomass with estimating accuracy and sampling range of assessment provided. Results for Zhejiang Province in 2009 showed a total forest vegetation biomass of 37 010.7 104 t. Within the major forest vegetation types,the arbor community was 29 096.3 104 t,the bamboo community was 3 763.0 104 t,and the shrub community was 1 748.0 104 t. Using a guaranteed reliability of P < 0.05,accuracy for total forest biomass was 96.64% with a sampling interval of 35 767.1 104 - 38 254.3 104 t;accuracy for the arbor community was 95.58% with a sampling interval of 27 810.2 104 - 30 382.3 104 t;accuracy for the bamboo forest community was 89.13% with a sampling interval of 3 353.9 104 - 4 172.0 104 t;and accuracy for the shrub community was 90.00% with a sampling interval of 1 573.2 104 - 1 922.7 104 t. Therefore,using these methods a high precision for forest vegetation biomass assessment was attained.[Ch,3 tab. 26 ref.]
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.03.002

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