التفاصيل البيبلوغرافية
| العنوان: |
Mixed Castanea sativa plantations including arboreal companion species enhance chestnut growth and high-quality timber production. |
| المؤلفون: |
Loewe-Muñoz, Verónica, Delard, Claudia, del Río, Rodrigo, Barrales, Luis, Balzarini, Mónica |
| المصدر: |
Forest Ecology & Management; Feb2023, Vol. 529, pN.PAG-N.PAG, 1p |
| مصطلحات موضوعية: |
CHESTNUT, TREE farms, PLANTATIONS, RED oak, CASTANEA, SWEET cherry, SPECIES |
| مصطلحات جغرافية: |
CHILE |
| مستخلص: |
• Growth, survival, health and quality of was assessed in pure and mixed plantations. • Benefits of some mixed plantations on growth and timber quality were evident at age 20. • The association including main species enhanced chestnut tree performance. • No pests were recorded on chestnut trees, and survival was high in all plantations. • Embotrium coccineum as companion species was detrimental on growth and timber quality. Chestnut (Castanea sativa Mill.) is an important tree species for its timber, which is widely used for multiple purposes, including the veneer industry. The species has an interesting productive potential in Chile and requires specific management strategies to produce valuable, high-quality logs. Although mixed plantations including companion species usually enhance timber quality of several trees, the performance of chestnut under different associations is not well known. The objective of this study was to assess growth, survival, health, and timber quality of chestnut trees in several plantation types, including monoculture and mixtures with other companion trees and/or shrub. Growth and survival measurements were taken periodically in pure chestnut and mixed plantations established in southern Chile for a 20-year period after planting. The mixed plantations tested were: a main forest species mixture (Castanea sativa Mill., Quercus rubra L., Quercus robur L. and Prunus avium L.); three mixtures including main forest species plus one arboreal companion species (Alnus glutinosa L., Gevuina avellana Mol. or Embothrium coccineum J.R. Forst. & G. Forst.); one including main forest species plus one shrub nurse species (Fabiana imbricata Ruiz & Pav.); and three mixtures including one of the arboreal companion species and the shrub. Timber quality variables were assessed at age 20, and health status was recorded at ages 7 and 20 in all plantations. Growth variables were analyzed using linear mixed models to assess plantation effect over time. Kaplan-Meier survival analysis and Log Rank Test were used to compare chestnut tree survival among plantation types. Quality timber variables were analyzed with a χ2 test. Chestnut trees associated with arboreal main species (P. avium, Q. rubra, Q. robur) (Mix1) showed the best performance, with 10.1 % and 8.3 % higher height than average values of the other mixtures and the monoculture, respectively, and 19.1 % and 12.8 % higher diameter growth than across plantation types and monoculture average values, respectively. Mix1 had the highest average volume per tree (0.34 m−3), at least 30 % higher than the average volume of pure and other mixed plantations. This mixture including only main species also exhibited the highest percentage of trees with high trunk length values of all plantation types. No pest or diseases were recorded on chestnut trees, and survival was high in all plantation types. The impact of mixed plantations on growth and timber quality was evidenced at age 20. In particular, the association including arboreal companion species enhanced chestnut tree performance. [ABSTRACT FROM AUTHOR] |
|
Copyright of Forest Ecology & Management is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
