دورية أكاديمية
Models of sustainable use of alder (Alnus acuminate Kunth) hillside area in forest mist
| العنوان: | Models of sustainable use of alder (Alnus acuminate Kunth) hillside area in forest mist |
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| المؤلفون: | Pacheco-Agudo Edilberto, Quisbert-Guarachi Alicia Sonia |
| المصدر: | Journal of the Selva Andina Biosphere, Vol 4, Iss 1, Pp 24-38 (2016) |
| بيانات النشر: | Selva Andina Research Society, 2016. |
| سنة النشر: | 2016 |
| المجموعة: | LCC:Forestry LCC:Plant culture LCC:Plant ecology |
| مصطلحات موضوعية: | Alnus acuminata Kunth, matrix model, demographic model, sustainability., Forestry, SD1-669.5, Plant culture, SB1-1110, Plant ecology, QK900-989 |
| الوصف: | Timber extractions non planned affect negatively in the reduction of forest cover, proper management and planned with minor extractions preserve the natural production allow for longer and sustainable forms a stand to benefit local populations and the same ecosystem. In the basin of Acero Marca has two stands Alnus acuminata that they are extracted continuously. With the purpose of planning the extraction of timber resourses were constructed and evaluated matrix models sustainable harvest of this species on the basis of structures of age. For this, two old structures we worked following a dendrochronological analysis and demographic model of the forestall mass, from making local information by transectos Gentry. According to the demographic model, the potential regression evidences significant differences (p< 0.001) that only it explains 45.5 % of the existent variation, the remainder is explained by the environmental variation, it allowed establishing two elderly structures, the first with seven classes and the second one with two classes. The results demonstrate the first age structure suggest than models 1 to 4 are feasible in time. The sensitivity analysis shows that simulate selective harvests straight trees of 10 to 90% (models 1 to 4) of categories 4, 5, 6 and 7 from the sixth year, the stand would not be adversely affected λ> 1 and could be the most appropriate for a planned extraction becoming sustainable over time. The second structure of age proved extremely sensitive to any change. To use the matrix models is not a simple path of going over. In spite of the results, the matrix models joined to ample experience of the observer would be able to present proposals of sustainable handling of the forestal resources. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian Portuguese |
| تدمد: | 2308-3867 2308-3859 |
| العلاقة: | http://www.scielo.org.bo/scielo.php?script=sci_arttext&pid=S2308-38592016000100003&lng=pt&nrm=iso&tlng=esTest; https://doaj.org/toc/2308-3867Test; https://doaj.org/toc/2308-3859Test |
| الوصول الحر: | https://doaj.org/article/18fb5805c749409bbf4b0f0fa1b0ca88Test |
| رقم الانضمام: | edsdoj.18fb5805c749409bbf4b0f0fa1b0ca88 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 23083867 23083859 |
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