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林草资源研究 ›› 2025›› Issue (2): 126-132.doi: 10.13466/j.cnki.lczyyj.2025.02.013

• 科学研究 • 上一篇    下一篇

秦岭陕西段森林生态系统碳储量及组成特征

党楷涵1(), 马菁2, 方佳佳2()   

  1. 1.墨尔本大学 数学与统计学院,墨尔本 维多利亚州 3053
    2.陕西省林业调查规划院,西安 710082
  • 收稿日期:2025-01-13 修回日期:2025-03-03 出版日期:2025-04-28 发布日期:2025-12-04
  • 通讯作者: 方佳佳,高级工程师,主要研究方向为生态资源监测、碳汇计量。Email:62183032@qq.com
  • 作者简介:党楷涵,本科生,专业为数学与统计。Email:kristimdang@gmail.com

Carbon stock estimation across forest ecosystem components in the qinling mountain of Shaanxi Province

DANG Kaihan1(), MA Jing2, FANG Jiajia2()   

  1. 1. School of Mathematics and Statistics,The University of Melbourne,Melbourne VIC 3053,Australia
    2. Shaanxi Forestry Survey and Planning Institute,Xi’an 710082,China
  • Received:2025-01-13 Revised:2025-03-03 Online:2025-04-28 Published:2025-12-04

摘要: 基于2023年陕西省林草生态综合监测及蓄积量调查数据,参考《森林生态系统碳储量计量指南》(LY/T 2988—2018)中的测算方法,从树种、龄组等方面估算秦岭陕西段森林生态系统碳储量及其组成特征。结果表明:1)在秦岭陕西段优势树种中,从树种来看,栎类占比最高,达76.21%,其次为油松,约占12.84%;从龄组来看,中龄林占比最高,为46.55%,成熟林占比最低,为22.53%,幼龄林占比居中,为30.92%。2)乔木层总碳储量为193.37 Tg,栎类的碳储量最大,占乔木层总碳储量的79.43%,油松林次之,占8.67%;中龄林碳储量占48.84%,幼龄林和成熟林分别占22.93%和28.24%。3)不同优势树种的平均生物量碳密度为43.49 Mg/hm2,其中,栎类和油松林的平均生物量碳密度分别为45.22 Mg/hm2和29.29 Mg/hm2,区域内树种生物量碳密度总体随林龄呈增加趋势。4)森林生态系统总碳储量为531.09 Tg,其中,乔木层、灌木层、土壤层分别占总碳储量的 36.41%、7.59%和52.46%,草本层、枯落物和枯死木共占3.54%。

关键词: 秦岭, 森林生态系统, 碳储量, 土壤有机碳

Abstract:

This study systematically evaluates the carbon stock dynamics in the Qinling Mountain forest ecosystem of Shaanxi Province,utilizing the 2023 integrated monitoring dataset of forest-grassland ecosystems and the latest resource inventory data,and following the calculation methods in the Forest Ecosystem Carbon Stock Measurement Guidelines(LY/T 2988—2018).The results show that:1) Quercus spp.is the absolute dominant tree species in the region,accounting for 76.21%,followed by Pinus tabuliformis,accounting for about 12.84%.In terms of age groups,middle-aged forests have the highest proportion,at 46.55%,while mature forests have the lowest proportion,at 22.53%.2) The total carbon storage of arbor forest land is 193.37 Tg,among which Quercus spp.and Pinus tabuliformis forests have the largest carbon storage,accounting for 79.43% and 8.67% of the total carbon storage of arbor forest land,respectively.Middle-aged forests account for 48.84% of the carbon storage,while young and mature forests account for 22.93% and 28.24%,respectively.3) The average stand carbon density of dominant tree species was 43.49 Mg/hm2,with Quercus spp.and Pinus tabuliformis forests averaging 45.22 and 29.29 Mg/hm2,respectively.Overall,tree species carbon density in the region showed an increasing trend with stand age.4) The total carbon storage of the forest ecosystem is 531.09 Tg,among which the tree layer,shrub layer,and soil layer account for 36.41%,7.59%,and 52.46% of the total carbon storage,respectively,the herb layer,litter and dead wood together account for 3.54%.

Key words: Qinling region, forest ecosystem, carbon storage, soil organic carbon

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