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基于固定样地和小班数据的天台县林分乔木层年净生产力结构化计算

蔡人岳, 邹奕巧, 陈子剑, 姚任图, 陶吉兴

蔡人岳, 邹奕巧, 陈子剑, 姚任图, 陶吉兴. 基于固定样地和小班数据的天台县林分乔木层年净生产力结构化计算[J]. 浙江林业科技, 2019, 39(6): 45-52.
引用本文: 蔡人岳, 邹奕巧, 陈子剑, 姚任图, 陶吉兴. 基于固定样地和小班数据的天台县林分乔木层年净生产力结构化计算[J]. 浙江林业科技, 2019, 39(6): 45-52.
CAI Ren-yue, ZOU Yi-qiao, CHEN Zi-jian, YAO Ren-tu, TAO Ji-xing. Annual Net Productivity of Arbor Layer of Forest in Tiantai Based on Data of Permanent Sample Plots and Subcompartments[J]. Journal of Zhejiang Forestry Science and Technology, 2019, 39(6): 45-52.
Citation: CAI Ren-yue, ZOU Yi-qiao, CHEN Zi-jian, YAO Ren-tu, TAO Ji-xing. Annual Net Productivity of Arbor Layer of Forest in Tiantai Based on Data of Permanent Sample Plots and Subcompartments[J]. Journal of Zhejiang Forestry Science and Technology, 2019, 39(6): 45-52.

基于固定样地和小班数据的天台县林分乔木层年净生产力结构化计算

基金项目: 国家科技支撑计划团队任务 “低效公益林更新改造和健康维持技术研究与示范(2012BAD22B0503);天台县生态公益林效益评价及空间布局与生态需求耦合水平研究(ZC2017ZFCG-031)
详细信息
    作者简介:

    蔡人岳,助理工程师,从事林业技术推广工作; E-mail: cairenyue@126.com。

    通讯作者:

    陶吉兴,教授级高级工程师,从事森林资源调查监测和评估研究; E-mail: taojixing@126.com。

  • 中图分类号: S757

Annual Net Productivity of Arbor Layer of Forest in Tiantai Based on Data of Permanent Sample Plots and Subcompartments

  • 摘要: 利用浙江省天台县 2009-2014年、2014-2016年、2016-2017年固定样地的单木生物量数据,考虑森林类别、龄组和林型计算出保留木生物量年均生长率、生物量的年均保留率、进界木生物量年均生长率和年均进界木株数;根据天台县 2017年调查的小班数据计算小班各树种组的生物量,作为计算 2018年净生产力的基数,结合对应参数,计算出小班内各树种 2018年的保留木生产力、采伐木和枯损木的未测生产力、进界木的生产力,统计全县林分乔木层年净生产力。结果表明,2018年天台县林分乔木层净生产力 58.95万 t,其中保留木 54.04万 t,采伐木、枯损木未测生产力 1.25万 t,进界木 3.66万 t,单位面积净生产力 7.00 t?hm-2?a-1。公益林净生产力 35.23万 t,商品林 23.72万 t,单位面积净生产力商品林大于公益林。针阔混交林年净生产力昀多,为 18.49万 t,硬阔林单位面积净生产力昀大,为 8.33 t?hm-2?a-1。中龄林年净生产力昀多,为 27.82万 t,幼龄林单位面积净生产力昀大,为 8.33 t?hm-2?a-1。
    Abstract: Based on individual tree biomass of permanent sample plots from 2009 to 2014, 2014 to 2016 and 2016 to 2017 in Tiantai county, Zhejiang province, parameters such as average annual growth rate of biomass of reserved trees, average annual reserved rate of biomass, average annual number of ingrowth and their growth rate of biomass were calculated combining with ecological forest and commercial one, forest types and age groups. The biomass of each tree species group at subcompartment in 2017 was calculated for cardinal number of annual net productivity calculation in 2018. The productivity of reserved tree, potential one of felled or mortality and ingrowth of different species at subcompartments was calculated combined with responding parameters, and then the annual net productivity of arbor layer of forest in the county could be calculated. The results showed that in 2018, the net productivity of arbor layer of forest in Tiantai was 5.895×105 t of which 5.404×105 t of reserved tree, 0.125×105 t of potential, 0.366×105 tons of ingrowth, and annual net productivity per unit area was 7.00 t/ha. The net productivity of ecological forest was 3.523×105t, and that of commercial one was 2.372×105 t. The annual net productivity of coniferous-broad-leaved mixed forest was the highest, 1.849×105 t, and that per unit area of hard broad-leaved forest was the largest, 0.833×105 t. The annual net productivity of middle-aged forest was the highest, 2.782×105 t, and that per unit area of young forest was the largest, 0.833×105 t.
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出版历程
  • 收稿日期:  2019-04-14
  • 修回日期:  2019-09-20
  • 刊出日期:  2019-12-30

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