树冠状况:墨西哥城圣胡安Aragón森林中城市树木的健康指标

IF 1.2 4区农林科学 Q3 FORESTRY

Journal of Sustainable Forestry Pub Date : 2022-06-16 DOI:10.24294/sf.v5i1.1623

L. D. L. Saavedra-Romero, Dionicio Alvarado-Rosales, Patricia Hernández-de La Rosa, T. Martínez-Trinidad, G. Mora-Aguilera, Jaime Villa-Castillo

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引用次数: 0

摘要

城市绿地为社会和环境提供各种服务。博斯克圣胡安Aragón是墨西哥城东北部为数不多的绿地之一，其树木的健康状况目前尚不清楚。本研究在上述森林中随机建立的28个0.1 ha圆形样地实施并适应了树冠状况指标方案。测定样地内所有乔木的正径(ND)和总高(TA)，确定其分类、树冠状况和人工林密度。对于冠状态，测量了6个变量:活冠比例(PLC)、冠密度(CD)、冠透明度(CTR)、枯梢(DB)、冠位置(CP)和光照(LE)。前四项以5%的等级进行测量，其余两项以序数量表进行测量。共评估了760棵乔木，分为10科11属12种。冠变量的平均值为56.37% PLC, 44.38% CD, 4.04% DB和38.4% CTR。在其他研究中，只有PLC达到了树木健康的既定标准，而CD较低，CTR和DB值较高。

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Canopy condition: Health indicator of urban trees in the San Juan de Aragón Forest, Mexico City

Urban green areas provide various services to society and the environment. The Bosque San Juan de Aragón is one of the few green areas in the northeast of Mexico City and the current condition of its trees in terms of health is not known with precision. In the present study, the protocol for the crown condition indicator was implemented and adapted in 28 circular plots of 0.1 ha, randomly established in the aforementioned forest. All trees within each plot were measured for normal diameter (ND) and total height (TA), and their taxonomic classification, crown condition and plantation density were determined. For crown condition, six variables were measured: proportion of live crown (PLC), crown density (CD), crown transparency (CTR), dieback (DB), crown position (CP) and light exposure (LE). The first four were measured in 5% classes and the remaining two were measured on an ordinal scale. A total of 760 trees were evaluated, grouped into 10 families, 11 genera and 12 species. The average values for the crown variables were 56.37% PLC, 44.38% CD, 4.04% DB and 38.4% CTR. Only PLC reached the established standards of tree health found in other studies, while CD was low and CTR and DB values were high.

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来源期刊

Journal of Sustainable Forestry Social Sciences-Geography, Planning and Development

CiteScore

3.90

自引率

12.50%

发文量

期刊介绍： Journal of Sustainable Forestry publishes peer-reviewed, original research on forest science. While the emphasis is on sustainable use of forest products and services, the journal covers a wide range of topics from the underlying biology and ecology of forests to the social, economic and policy aspects of forestry. Short communications and review papers that provide a clear theoretical, conceptual or methodological contribution to the existing literature are also included in the journal. Common topics covered in the Journal of Sustainable Forestry include: • Ecology, management, recreation, restoration and silvicultural systems of all forest types, including urban forests • All aspects of forest biology, including ecophysiology, entomology, pathology, genetics, tree breeding, and biotechnology • Wood properties, forest biomass, bioenergy, and carbon sequestration • Simulation modeling, inventory, quantitative methods, and remote sensing • Environmental pollution, fire and climate change impacts, and adaptation and mitigation in forests • Forest engineering, economics, human dimensions, natural resource policy, and planning Journal of Sustainable Forestry provides an international forum for dialogue between research scientists, forest managers, economists and policy and decision makers who share the common vision of the sustainable use of natural resources.