A Quantitative Index of Forest Structural Sustainability
| العنوان: | A Quantitative Index of Forest Structural Sustainability |
|---|---|
| المؤلفون: | David R. Castello, Stephen A. Teale, John D. Castello, Lianjun I. Zhang, Jonathan A. Cale, Justin L. West, Peter Devlin |
| المصدر: | Forests, Vol 5, Iss 7, Pp 1618-1634 (2014) Forests; Volume 5; Issue 7; Pages: 1618-1634 |
| بيانات النشر: | MDPI AG, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | biology, Ecology, Forest management, Forestry, lcsh:QK900-989, biology.organism_classification, Invasive species, invasive species, Calocedrus decurrens, baseline mortality, climate change, Geography, Disturbance (ecology), forest health, Picea engelmannii, Sustainability, lcsh:Plant ecology, Ecosystem, Abies balsamea |
| الوصف: | Forest health is a complex concept including many ecosystem functions, interactions and values. We develop a quantitative system applicable to many forest types to assess tree mortality with respect to stable forest structure and composition. We quantify impacts of observed tree mortality on structure by comparison to baseline mortality, and then develop a system that distinguishes between structurally stable and unstable forests. An empirical multivariate index of structural sustainability and a threshold value (70.6) derived from 22 nontropical tree species’ datasets differentiated structurally sustainable from unsustainable diameter distributions. Twelve of 22 species populations were sustainable with a mean score of 33.2 (median = 27.6). Ten species populations were unsustainable with a mean score of 142.6 (median = 130.1). Among them, Fagus grandifolia, Pinus lambertiana, P. ponderosa, and Nothofagus solandri were attributable to known disturbances; whereas the unsustainability of Abies balsamea, Acer rubrum, Calocedrus decurrens, Picea engelmannii, P. rubens, and Prunus serotina populations were not. This approach provides the ecological framework for rational management decisions using routine inventory data to objectively: determine scope and direction of change in structure and composition, assess excessive or insufficient mortality, compare disturbance impacts in time and space, and prioritize management needs and allocation of scarce resources. |
| وصف الملف: | application/pdf |
| تدمد: | 1999-4907 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebc268b2bed3ebc4b9a542eee4f1ad25 https://doi.org/10.3390/f5071618 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ebc268b2bed3ebc4b9a542eee4f1ad25 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19994907 |
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