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许洺山,李亮,王万胜,杜运才,汪彦颖,朱晓彤,梁启明,刘翔宇,阎恩荣. 海岛大径级树木健康评价指标体系构建—以上海大金山岛为例[J]. 植物科学学报,2023,41(5):573−582. DOI: 10.11913/PSJ.2095-0837.22324
引用本文: 许洺山,李亮,王万胜,杜运才,汪彦颖,朱晓彤,梁启明,刘翔宇,阎恩荣. 海岛大径级树木健康评价指标体系构建—以上海大金山岛为例[J]. 植物科学学报,2023,41(5):573−582. DOI: 10.11913/PSJ.2095-0837.22324
Xu MS,Li L,Wang WS,Du YC,Wang YY,Zhu XT,Liang QM,Liu XY,Yan ER. Construction of a health evaluation index system for large-diameter trees on islands: a case study of Dajinshan Island, Shanghai[J]. Plant Science Journal,2023,41(5):573−582. DOI: 10.11913/PSJ.2095-0837.22324
Citation: Xu MS,Li L,Wang WS,Du YC,Wang YY,Zhu XT,Liang QM,Liu XY,Yan ER. Construction of a health evaluation index system for large-diameter trees on islands: a case study of Dajinshan Island, Shanghai[J]. Plant Science Journal,2023,41(5):573−582. DOI: 10.11913/PSJ.2095-0837.22324

海岛大径级树木健康评价指标体系构建—以上海大金山岛为例

Construction of a health evaluation index system for large-diameter trees on islands: a case study of Dajinshan Island, Shanghai

  • 摘要: 大径级树木是维持森林群落结构稳定性的主体。海岛由于特殊的生物地理环境蕴育着数量可观的大径级树木。本文以上海大金山岛168株大径级树木为对象,调查了影响树木生长的生物和非生物因素,根据敏感性分析筛选出12个反映海岛大径级树木健康的关键指标;利用层次分析法构建了海岛大径级树木健康评价指标体系,并评价每株个体的健康程度。结果显示:(1)大金山岛大径级树木中,25株为古树,37株为古树后续资源。朴树(Celtis sinensis Pers.)、桑(Morus alba L.)、麻栎(Quercus acutissima Carr.)和乌桕(Triadica sebifera (L.) Small)是上海市现存的最大古树;山合欢(Albizia julibrissin Durazz.)、野鸦椿(Euscaphis japonica (Thunb. ex Roem. et Schult.) Kanitz)、红楠(Machilus thunbergii Siebold et Zucc.)、鸡桑(Morus australis Poir.)、豆梨(Pyrus calleryana Decne.)、柃木(Eurya nitida Korth.)、青冈(Cyclobalanopsis glauca (Thunb.) Oerst.)是未纳入上海市古树名录中的最大古树。(2)指标体系中,准则层权重大小为生物因素>立木状况>生长环境;指标层中叶片病害程度、攀援藤本盖度、树干病害程度、邻体空间挤压程度和枯枝比权重较大,各占约10%。(3)54%的大径级树木存在不同程度的健康问题。豆梨、楝(Melia azedarach L.)、丝棉木(Euonymus maackii Rupr.)、构树(Broussonetia papyrifera (L.) L’Hér. ex Vent.)、白檀(Symplocos paniculata (Thunb.) Miq.)、野鸦椿、黄檀(Dalbergia hupeana Hance)和算盘子(Glochidion puberum (L.) Hutch.)的健康状况相对较差。

     

    Abstract: Large-diameter trees are essential for stabilizing forest community structure. Due to their unique biogeographical environment, islands harbor a significant number of large-diameter trees. In this study, we investigated 17 biotic and abiotic factors affecting 168 large-diameter trees on Dajinshan Island. Using the analytic hierarchy process, we selected 12 high- and medium-sensitivity indices and constructed a three-level health evaluation system for large-diameter trees on islands. Results revealed that: (1) On Dajinshan Island, 25 large-diameter trees were categorized as old trees and 37 were categorized as prospective old tree resources. The largest existing old trees in Shanghai include Celtis sinensis Pers., Morus alba L., Quercus acutissima Carr., and Triadica sebifera (L.) Small. Several species, including Albizia julibrissin Durazz., Euscaphis japonica (Thunb. ex Roem. et Schult.) Kanitz, Machilus thunbergii Siebold et Zucc., Morus australis Poir., Pyrus calleryana Decne., Eurya nitida Korth., and Cyclobalanopsis glauca (Thunb.) Oerst., were identified as the largest old trees not previously included in the list of old trees in Shanghai. (2) For the tree health evaluation system, biological factors ranked as the most crucial, followed by stand condition and growing environment. In the index layer, factors such as leaf disease degree, coverage of climbing liana, degree of tree disease, space compression from neighbors, and dead branch ratio carried higher weights, nearing 10%. (3) Approximately 54% of the large-diameter trees on Dajinshan Island exhibited varying health problems. Pyrus calleryana Decne., Melia azedarach L., Euonymus maackii Rupr., Broussonetia papyrifera (L.) L’Hér. ex Vent., Symplocos paniculata (Thunb.) Miq., Euscaphis japonica (Thunb. ex Roem. et Schult.) Kanitz, Dalbergia hupeana Hance, and Glochidion puberum (L.) Hutch. exhibited relatively poor health conditions.

     

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