A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico
Forest management planning requires forest growth models that provide a reliable way to forecast growth, calculate yield, and examine the effects of silviculture. Here we used a size stem frequency approach based on differential equations to developed a growth simulator system to guide the managemen...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Research Centre for Forestry and Wood
2019-11-01
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| Series: | Annals of Silvicultural Research |
| Subjects: | |
| Online Access: | https://journals-crea.4science.it/index.php/asr/article/view/1850 |
| _version_ | 1828541741306740736 |
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| author | Jimena Forero Montaña Jess Zimmerman Thrity Vakil Mark Nelson Maria Eglee Perez Joaquin Medin |
| author_facet | Jimena Forero Montaña Jess Zimmerman Thrity Vakil Mark Nelson Maria Eglee Perez Joaquin Medin |
| author_sort | Jimena Forero Montaña |
| collection | DOAJ |
| description | Forest management planning requires forest growth models that provide a reliable way to forecast growth, calculate yield, and examine the effects of silviculture. Here we used a size stem frequency approach based on differential equations to developed a growth simulator system to guide the management of mahoe (Talipariti elatum (SW.) Fryxell) in a small plantation in Puerto Rico. We estimated the optimal harvest age using the Faustmann model, and evaluated alternative harvesting schemes using sensitivity analyses. The growth simulator system predicted that tree volume at first rises quickly, reaches a maximum value, and then decreases because of a lack of natural regeneration in the plantation. Thus, harvesting must be followed by replanting and large and healthy trees must be maintained as seed sources. The optimal harvest age was 43 years for a discount rate of 2.5% and 19 years for 5% interest. Analysis for alternative management schemes based on selective harvesting of the largest tress showed that 5%, 15%, or 30% of the trees ≥54.5 cm dbh could be harvested in cycles of 1, 5 or 10 years respectively, without drastically decreasing the basal area. The sustainability of these management schemes will depend on the costs of management, as well as the responses of mahoe to selective harvesting. |
| first_indexed | 2024-12-12T01:45:28Z |
| format | Article |
| id | doaj.art-38dfb863c52241c5a5f6b9cbd011bd97 |
| institution | Directory Open Access Journal |
| issn | 2284-354X |
| language | English |
| last_indexed | 2024-12-12T01:45:28Z |
| publishDate | 2019-11-01 |
| publisher | Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Research Centre for Forestry and Wood |
| record_format | Article |
| series | Annals of Silvicultural Research |
| spelling | doaj.art-38dfb863c52241c5a5f6b9cbd011bd972022-12-22T00:42:36ZengConsiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Research Centre for Forestry and WoodAnnals of Silvicultural Research2284-354X2019-11-01432526110.12899/asr-18501188A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto RicoJimena Forero Montaña0Jess Zimmerman1Thrity Vakil2Mark Nelson3Maria Eglee Perez4Joaquin Medin5University of Puerto Rico Rio Piedras - Biology University of Puerto Rico, Rio Piedras Campus, Faculty of Natural Sciences, Department of Biology, PO Box 23360 San JuanUniversity of Puerto Rico Rio Piedras Ringgold standard institution - Environmental Sciences San Juan, San JuanTropic Ventures Research and Education Foundation, Patillas, Puerto RicoInstitute of Ecotechnics (US/UK) Santa Fe, New Mexico United States Tropic Ventures Puerto Rico PatillasUniversity of Puerto Rico Rio Piedras - Mathematics San Juan, San Juan Puerto RicoUniversity of Puerto Rico in Bayamon Ringgold standard institution - Physics BayamonForest management planning requires forest growth models that provide a reliable way to forecast growth, calculate yield, and examine the effects of silviculture. Here we used a size stem frequency approach based on differential equations to developed a growth simulator system to guide the management of mahoe (Talipariti elatum (SW.) Fryxell) in a small plantation in Puerto Rico. We estimated the optimal harvest age using the Faustmann model, and evaluated alternative harvesting schemes using sensitivity analyses. The growth simulator system predicted that tree volume at first rises quickly, reaches a maximum value, and then decreases because of a lack of natural regeneration in the plantation. Thus, harvesting must be followed by replanting and large and healthy trees must be maintained as seed sources. The optimal harvest age was 43 years for a discount rate of 2.5% and 19 years for 5% interest. Analysis for alternative management schemes based on selective harvesting of the largest tress showed that 5%, 15%, or 30% of the trees ≥54.5 cm dbh could be harvested in cycles of 1, 5 or 10 years respectively, without drastically decreasing the basal area. The sustainability of these management schemes will depend on the costs of management, as well as the responses of mahoe to selective harvesting.https://journals-crea.4science.it/index.php/asr/article/view/1850forest management modellingoptimal harvest ageselective harvestingsystem dynamics. |
| spellingShingle | Jimena Forero Montaña Jess Zimmerman Thrity Vakil Mark Nelson Maria Eglee Perez Joaquin Medin A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico Annals of Silvicultural Research forest management modelling optimal harvest age selective harvesting system dynamics. |
| title | A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico |
| title_full | A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico |
| title_fullStr | A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico |
| title_full_unstemmed | A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico |
| title_short | A narrow size diameter class model for tree growth and yield simulation in a mahoe (Talipariti elatum (SW.) Fryxell, Malvaceae) plantation in Puerto Rico |
| title_sort | narrow size diameter class model for tree growth and yield simulation in a mahoe talipariti elatum sw fryxell malvaceae plantation in puerto rico |
| topic | forest management modelling optimal harvest age selective harvesting system dynamics. |
| url | https://journals-crea.4science.it/index.php/asr/article/view/1850 |
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