Pub Date : 2020-04-30DOI: 10.5154/R.RCHSCFA.2020.05.037
Rubén Barrera-Ramírez, J. Vargas-Hernández, R. López-Aguillón, H. J. Muñoz-Flores, E. Treviño-Garza, O. Aguirre-Calderón
Introduction: Grafting allows full multiplication of phenotypic and genotypic characteristics of genetically improved trees. Objective: To determine the influence of bud origin, rootstock fertilization, grafting period and grafting techniques on the success of grafting, growth, and survival of intraspecific grafts in Pinus pseudostrobus var. oaxacana (Mirov) Harrison. Materials and methods: The effect of four factors was evaluated ([a] two bud sources, [b] three rootstock fertilization doses, [c] three grafting seasons and [d] two grafting techniques) on the success of grafting, shoot growth (Sg) and survival. An analysis of variance was carried out to determine the effect of factors a, b, c, and d on successful grafting and Sg, and a Log-Rank test was carried out for survival analysis. Results and discussion: Significant differences (P ≤ 0.05) were obtained for factors a,c and d. Grafting during winter (December 2018 and February 2019) using the side-veneer grafts technique and buds coming from Santa Catarina Ixtepeji showed the highest values of successful grafting (≥25.5 %), Sg (≥14.5 cm) and survival (≥20.5 %). Final survival decreased from 100 to 27 % 90 days after grafting. Conclusions: Grafting period, bud origin, and grafting technique, individually or interacting with, are determinant factors for the success of intraspecific grafting on P. pseudostrobus var. oaxacana.
{"title":"Impact of external and internal factors on successful grafting of Pinus pseudostrobus var. oaxacana (Mirov) Harrison","authors":"Rubén Barrera-Ramírez, J. Vargas-Hernández, R. López-Aguillón, H. J. Muñoz-Flores, E. Treviño-Garza, O. Aguirre-Calderón","doi":"10.5154/R.RCHSCFA.2020.05.037","DOIUrl":"https://doi.org/10.5154/R.RCHSCFA.2020.05.037","url":null,"abstract":"Introduction: Grafting allows full multiplication of phenotypic and genotypic characteristics of genetically improved trees. Objective: To determine the influence of bud origin, rootstock fertilization, grafting period and grafting techniques on the success of grafting, growth, and survival of intraspecific grafts in Pinus pseudostrobus var. oaxacana (Mirov) Harrison. Materials and methods: The effect of four factors was evaluated ([a] two bud sources, [b] three rootstock fertilization doses, [c] three grafting seasons and [d] two grafting techniques) on the success of grafting, shoot growth (Sg) and survival. An analysis of variance was carried out to determine the effect of factors a, b, c, and d on successful grafting and Sg, and a Log-Rank test was carried out for survival analysis. Results and discussion: Significant differences (P ≤ 0.05) were obtained for factors a,c and d. Grafting during winter (December 2018 and February 2019) using the side-veneer grafts technique and buds coming from Santa Catarina Ixtepeji showed the highest values of successful grafting (≥25.5 %), Sg (≥14.5 cm) and survival (≥20.5 %). Final survival decreased from 100 to 27 % 90 days after grafting. Conclusions: Grafting period, bud origin, and grafting technique, individually or interacting with, are determinant factors for the success of intraspecific grafting on P. pseudostrobus var. oaxacana.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"27 1","pages":"243-256"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48494659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/r.rchscfa.2019.07.061
Juan Carlos Guzmán-Santiago, O. Aguirre-Calderón, Benedicto Vargas-Larreta, Tecnológico Nacional de México
{"title":"Forest volume estimation techniques with special emphasis on the tropics","authors":"Juan Carlos Guzmán-Santiago, O. Aguirre-Calderón, Benedicto Vargas-Larreta, Tecnológico Nacional de México","doi":"10.5154/r.rchscfa.2019.07.061","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.07.061","url":null,"abstract":"","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"26 1","pages":"291-306"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42164355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/R.RCHSCFA.2020.05.035
G. Cuyckens, F. Mazzini, Rocío F. Julián, David E. Medina, Gustavo F. Guzmán
Introduction: Polylepis forest is an ecosystem stated with conservation priority and threatened by anthropogenic effects; extensive livestock is one of the most frequent disturbances. Objective: To study the effect of livestock on the early stages of regeneration of a queñoa (Polylepis australis Bitt.) forest. Materials and methods: Within a pure forest of P. australis at Parque Provincial Potrero de Yala, Jujuy, Argentina, densities of seedlings (˂1 year) and saplings (˃1 year and ˂30 cm) were measured in the presence (0.23 heads∙ha-1) and absence of livestock, for a year. Linear mixed models(normal distribution) were adjusted for density of seedlings and saplings. Data was analyzed with a Chi-square test (X2). Results and discussion: Presence of livestock had no impact on seedling density, but significantly decreased density of saplings (P < 0.001); in areas without livestock (10.58 ± 6.64 individuals∙m-2) was three times higher than with presence of livestock (3.17 ± 3.86 individuals∙m-2). Difference in density of seedlings and saplings was significantly (P < 0.001) over time. This indicates that there is potential for natural regeneration, but livestock would affect stages after seedling emergence, representing a threat to the forest. Conclusion: This study provides important information on livestock management in mountain forests of P. australis. A long-term study of the effect of livestock on seedling and sapling density, and over the entire distribution range, is needed.
引言：Polylapis森林是一个被列为保护重点的生态系统，受到人为影响的威胁；大量饲养牲畜是最常见的骚乱之一。前言：目的：研究家畜对奎欧亚（Polylepis australis Bitt.）森林再生早期阶段的影响。材料和方法：在阿根廷Jujuy的Parque Provincial Potrero de Yala的一片纯澳大利亚P.australis森林中，在有牲畜（0.23头·ha-1）和没有牲畜的情况下，测量了一年内幼苗（1年）和树苗（1年和30厘米）的密度。线性混合模型（正态分布）对幼苗和幼树的密度进行了调整。数据采用卡方检验（X2）进行分析。结果与讨论：牲畜的存在对幼苗密度没有影响，但显著降低了幼树密度（P＜0.001）；在没有牲畜的地区（10.58±6.64个人∙m-2）是有牲畜的地区的三倍（3.17±3.86个人∙m-1）。随着时间的推移，幼苗和幼树的密度差异显著（P＜0.001）。这表明存在自然再生的潜力，但牲畜会影响幼苗出现后的阶段，这对森林构成威胁。结论：本研究为南方松山地林畜牧业管理提供了重要信息。需要对牲畜对幼苗和树苗密度以及整个分布范围的影响进行长期研究。
{"title":"Effect of livestock on regeneration of queñoa (Polylepis australis Bitt.) forest in the Southern Andean Yungas of northwestern Argentina","authors":"G. Cuyckens, F. Mazzini, Rocío F. Julián, David E. Medina, Gustavo F. Guzmán","doi":"10.5154/R.RCHSCFA.2020.05.035","DOIUrl":"https://doi.org/10.5154/R.RCHSCFA.2020.05.035","url":null,"abstract":"Introduction: Polylepis forest is an ecosystem stated with conservation priority and threatened by anthropogenic effects; extensive livestock is one of the most frequent disturbances. Objective: To study the effect of livestock on the early stages of regeneration of a queñoa (Polylepis australis Bitt.) forest. Materials and methods: Within a pure forest of P. australis at Parque Provincial Potrero de Yala, Jujuy, Argentina, densities of seedlings (˂1 year) and saplings (˃1 year and ˂30 cm) were measured in the presence (0.23 heads∙ha-1) and absence of livestock, for a year. Linear mixed models(normal distribution) were adjusted for density of seedlings and saplings. Data was analyzed with a Chi-square test (X2). Results and discussion: Presence of livestock had no impact on seedling density, but significantly decreased density of saplings (P < 0.001); in areas without livestock (10.58 ± 6.64 individuals∙m-2) was three times higher than with presence of livestock (3.17 ± 3.86 individuals∙m-2). Difference in density of seedlings and saplings was significantly (P < 0.001) over time. This indicates that there is potential for natural regeneration, but livestock would affect stages after seedling emergence, representing a threat to the forest. Conclusion: This study provides important information on livestock management in mountain forests of P. australis. A long-term study of the effect of livestock on seedling and sapling density, and over the entire distribution range, is needed.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43078385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/r.rchscfa.2019.04.035
Edwin D. Silva-Lugo, Pueblo Nuevo Durango México. n. C. P. . El Salto, Alondra Y. Aragón-Vásquez, J. A. Nájera-Luna, F. Hernández, Ricardo de la Cruz-Carrera, A. Carrillo-Parra
{"title":"Analysis of the physical work environment in sawmills in El Salto, Durango, Mexico","authors":"Edwin D. Silva-Lugo, Pueblo Nuevo Durango México. n. C. P. . El Salto, Alondra Y. Aragón-Vásquez, J. A. Nájera-Luna, F. Hernández, Ricardo de la Cruz-Carrera, A. Carrillo-Parra","doi":"10.5154/r.rchscfa.2019.04.035","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.04.035","url":null,"abstract":"","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"26 1","pages":"207-219"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42458424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/R.RCHSCFA.2020.06.045
D. Córdoba-Rodríguez, J. Vargas-Hernández, F. O. Plascencia-Escalante, J. López-Upton, M. Pérez-Suárez, C. Trejo-López
Introduction: In response to climate change, plants can adapt, migrate or die; however, migration by natural dispersion of seed can be very slow. Objective: To determine productive potential, dispersal distance and seed bank of Lupinus montanusKunth (lupine) at the upper limit (4 200 m) of its natural distribution at the “Nevado de Toluca” mountain. Materials and methods: The seed bank was estimated in an area of 1.88 m2. Three sampling sites were established with plants in reproductive stage (15 plants) isolated from other adult plants. Seed production was determined in traps placed at the four orientations of each plant and spatial pattern of dispersal was also determined. Results and discussion: Seedbank density was 4.26 seeds∙m-2 of soil. Lupinus montanus produced over 5 500 seeds per plant in one reproductive cycle; its seed potential was associated with plant height and number of stems. The number of seeds collected varied significantly (P < 0.0001) with respect to distance from the mother plant. The dispersion curve was adjusted (P < 0.01) to a negative exponential model (R2 = 0.849). Dispersal in the four orientations was symmetrical; 97 % of the seeds fell at a distance ≤2 m from the mother plant. Conclusions: Only 3.2 % of the seeds of L. montanus reached a distance greater than 2 m from the mother plant; however, dispersal is uniform in all orientations, therefore soil slope does not represent a limiting factor for the altitudinal migration of species.
引言：为了应对气候变化，植物可以适应、迁移或死亡；然而，种子的自然分散迁移可能非常缓慢。目的：测定羽扇豆在“Nevado de Toluca”山自然分布上限（4 200 m）的生产潜力、扩散距离和种子库。材料和方法：种子库面积估计为1.88m2。用从其他成年植物中分离出的生殖期植物（15株）建立了三个采样点。在每株植物的四个方向上放置的陷阱中测定种子产量，并确定扩散的空间模式。结果与讨论：种子库密度为4.26粒/平方米。山羽扇豆在一个繁殖周期内每株产生5500多个种子；其种子潜力与株高和茎数有关。收集到的种子数量与母株的距离有显著差异（P＜0.0001）。色散曲线调整（P<0.01）为负指数模型（R2=0.849）。四个方向的色散是对称的；97%的种子落在距离母株≤2m的地方。结论：只有3.2%的L.montanus种子与母株的距离大于2m；然而，在所有方向上的扩散都是均匀的，因此土壤坡度并不是物种垂直迁移的限制因素。
{"title":"Seed production, dispersal and seed bank in Lupinus montanus Kunth at the upper limit of its altitudinal distribution in the Nevado de Toluca","authors":"D. Córdoba-Rodríguez, J. Vargas-Hernández, F. O. Plascencia-Escalante, J. López-Upton, M. Pérez-Suárez, C. Trejo-López","doi":"10.5154/R.RCHSCFA.2020.06.045","DOIUrl":"https://doi.org/10.5154/R.RCHSCFA.2020.06.045","url":null,"abstract":"Introduction: In response to climate change, plants can adapt, migrate or die; however, migration by natural dispersion of seed can be very slow. Objective: To determine productive potential, dispersal distance and seed bank of Lupinus montanusKunth (lupine) at the upper limit (4 200 m) of its natural distribution at the “Nevado de Toluca” mountain. Materials and methods: The seed bank was estimated in an area of 1.88 m2. Three sampling sites were established with plants in reproductive stage (15 plants) isolated from other adult plants. Seed production was determined in traps placed at the four orientations of each plant and spatial pattern of dispersal was also determined. Results and discussion: Seedbank density was 4.26 seeds∙m-2 of soil. Lupinus montanus produced over 5 500 seeds per plant in one reproductive cycle; its seed potential was associated with plant height and number of stems. The number of seeds collected varied significantly (P < 0.0001) with respect to distance from the mother plant. The dispersion curve was adjusted (P < 0.01) to a negative exponential model (R2 = 0.849). Dispersal in the four orientations was symmetrical; 97 % of the seeds fell at a distance ≤2 m from the mother plant. Conclusions: Only 3.2 % of the seeds of L. montanus reached a distance greater than 2 m from the mother plant; however, dispersal is uniform in all orientations, therefore soil slope does not represent a limiting factor for the altitudinal migration of species.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"27 1","pages":"229-241"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42621451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/r.rchscfa.2019.04.026
José C. Romero-Figueroa, M. N. Rodríguez-Mendoza, M. C. Gutiérrez-Castorena, J. Escalante-Estrada, C. B. Peña-Valdivia, J. Cueto-Wong
Introduction: The distribution of Stevia pilosa Lag. and its metabolite content with therapeutic properties have been documented; however, there are no reports of in situ development and factors influencing plant growth. Objective: To quantify the growth and phytochemical and nutrient content of S. pilosa plants in situ under three edaphoclimatic conditions in the state of Hidalgo, Mexico. Materials and methods: At the three sites called Huasca de Ocampo (HO), Mineral del Chico (MCh) and Mineral del Monte (MM), with different climates, soil types and elevation ranges, soil was collected and three plant samplings were carried out to follow the development of the species. Results and discussion: The number of plants varied according to the sampling sites, being higher in MCh (12 plants·m-2). Growth rate and leaf area were directly related. In MCh and MM plants, net photosynthesis only supplied the demand in the first two samplings, where there was significant accumulation (P ≤ 0.05) of matter, while in HO it supplied all the samplings. MCh and HO plants had a higher nutrient concentration (P ≤ 0.05). MCh and MM plants showed a higher concentration of phenols and flavonoids, and HO plants stood out in total terpenes. Conclusions: The edaphoclimatic conditions at the three sites in the state of Hidalgo modified the presence, form of growth and development of S. pilosa.
简介:甜菊糖的分布。其代谢物含量具有治疗性质已被记录;然而，没有关于植物原位发育和影响植物生长的因素的报道。目的:定量研究墨西哥伊达尔戈州三种气候条件下毛毛杉树的生长、植物化学和营养成分。材料和方法:在Huasca de Ocampo (HO)、Mineral del Chico (MCh)和Mineral del Monte (MM)三个不同气候、土壤类型和海拔范围的地点，收集了土壤并进行了三次植物取样，以跟踪物种的发展。结果与讨论:不同取样点的植物数量不同，以MCh较高(12株·m-2)。生长速率与叶面积直接相关。在MCh和MM植物中，净光合作用仅满足前两个样品的需求，其中物质积累显著(P≤0.05)，而在HO中，净光合作用满足所有样品的需求。MCh和HO植株的养分浓度较高(P≤0.05)。MCh和MM植株的酚类和总黄酮含量较高，而HO植株的总萜含量较高。结论:伊达尔戈州3个地点的土壤气候条件改变了金针菇的存在、生长和发育形式。
{"title":"Growth and secondary metabolites of Stevia pilosa Lag. in three edaphoclimatic conditions in the state of Hidalgo, Mexico","authors":"José C. Romero-Figueroa, M. N. Rodríguez-Mendoza, M. C. Gutiérrez-Castorena, J. Escalante-Estrada, C. B. Peña-Valdivia, J. Cueto-Wong","doi":"10.5154/r.rchscfa.2019.04.026","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.04.026","url":null,"abstract":"Introduction: The distribution of Stevia pilosa Lag. and its metabolite content with therapeutic properties have been documented; however, there are no reports of in situ development and factors influencing plant growth. Objective: To quantify the growth and phytochemical and nutrient content of S. pilosa plants in situ under three edaphoclimatic conditions in the state of Hidalgo, Mexico. Materials and methods: At the three sites called Huasca de Ocampo (HO), Mineral del Chico (MCh) and Mineral del Monte (MM), with different climates, soil types and elevation ranges, soil was collected and three plant samplings were carried out to follow the development of the species. Results and discussion: The number of plants varied according to the sampling sites, being higher in MCh (12 plants·m-2). Growth rate and leaf area were directly related. In MCh and MM plants, net photosynthesis only supplied the demand in the first two samplings, where there was significant accumulation (P ≤ 0.05) of matter, while in HO it supplied all the samplings. MCh and HO plants had a higher nutrient concentration (P ≤ 0.05). MCh and MM plants showed a higher concentration of phenols and flavonoids, and HO plants stood out in total terpenes. Conclusions: The edaphoclimatic conditions at the three sites in the state of Hidalgo modified the presence, form of growth and development of S. pilosa.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"26 1","pages":"173-187"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42992324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/r.rchscfa.2019.07.057
Gerónimo Quiñónez-Barraza, Dehai Zhao, H. D. L. Santos-Posadas
Introduction: Total height (H) and diameter at breast height (DBH) are important variables in forest inventory and they are the basis for growth and yield systems. Objective: To generate three prediction and projection equation systems for Pinus arizonica Engelmann (Pa) and Pinus durangensis Martinez (Pd) in mixed stands in Durango, Mexico. Materials and methods: The outside-bark DBH equations as functions of the inside-bark DBH were developed and the H-DBH relationship was extended to three relationships with the use of age (A): H-DBH, H-A and DBH-A. The equation systems of H-DBH-A were developed from a database of 46 and 66 stem analysis trees with 601 and 760 longitudinal measurements of Pa and Pd, respectively. The equations were fitted with apparently unrelated regression and Dummy variables approach with common and specific parameters. Results and discussion: The relationships showed significant accuracy in the assessed fitting statistics (adjusted coefficient of determination, root mean square error, Akaike's information criterion, standard error of the estimate and bias). The inverse equations of the three relationships formed a global system of prediction and projection equations. Conclusions: The equations are useful for predicting and projecting H and DBH and they can be used as input variables in growth and yield models.
{"title":"Height-diameter-age equation systems for Pinus arizonica Engelmann and Pinus durangensisMartinez in mixed-species stands in Durango, Mexico","authors":"Gerónimo Quiñónez-Barraza, Dehai Zhao, H. D. L. Santos-Posadas","doi":"10.5154/r.rchscfa.2019.07.057","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.07.057","url":null,"abstract":"Introduction: Total height (H) and diameter at breast height (DBH) are important variables in forest inventory and they are the basis for growth and yield systems. \u0000Objective: To generate three prediction and projection equation systems for Pinus arizonica Engelmann (Pa) and Pinus durangensis Martinez (Pd) in mixed stands in Durango, Mexico. \u0000Materials and methods: The outside-bark DBH equations as functions of the inside-bark DBH were developed and the H-DBH relationship was extended to three relationships with the use of age (A): H-DBH, H-A and DBH-A. The equation systems of H-DBH-A were developed from a database of 46 and 66 stem analysis trees with 601 and 760 longitudinal measurements of Pa and Pd, respectively. The equations were fitted with apparently unrelated regression and Dummy variables approach with common and specific parameters. \u0000Results and discussion: The relationships showed significant accuracy in the assessed fitting statistics (adjusted coefficient of determination, root mean square error, Akaike's information criterion, standard error of the estimate and bias). The inverse equations of the three relationships formed a global system of prediction and projection equations. \u0000Conclusions: The equations are useful for predicting and projecting H and DBH and they can be used as input variables in growth and yield models.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"26 1","pages":"221-240"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48270340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-30DOI: 10.5154/r.rchscfa.2019.06.043
Enrique Melo-Guerrero, J. Hernandez-Ortiz, Antonio Aguilar-Lopez, R. Rodriguez-Laguna, M. A. Martínez-Damián, R. Valdivia-Alcalá, Ramón Razo-Zárate, C. n
{"title":"Choice experiments for the management of Los Mármoles National Park, Mexico","authors":"Enrique Melo-Guerrero, J. Hernandez-Ortiz, Antonio Aguilar-Lopez, R. Rodriguez-Laguna, M. A. Martínez-Damián, R. Valdivia-Alcalá, Ramón Razo-Zárate, C. n","doi":"10.5154/r.rchscfa.2019.06.043","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.06.043","url":null,"abstract":"","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"26 1","pages":"257-272"},"PeriodicalIF":0.6,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48267776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.5154/R.RCHSCFA.2020.06.043
José Luis Romo-Lozano, Rosa M. Rodríguez, R. Rendón-Medel, Álvaro Labella
Introduction: The need for quality indicators is well recognized by users and proponents of public policy evaluation. Indicators recurrently include qualitative attributes for which there are few studies assessing the level of compliance. Objective: To apply a multigranular approach, based on the 2-tuple fuzzy linguistic model, to evaluate 13 indicators of the National Forestry Program, established in the system of social policy indicators derived from the National Development Plan 2012-2018 of Mexico. Materials and methods: The method uses the 2-tuple fuzzy linguistic representation model and an extension called extended linguistic hierarchies, designed to solve problems with multigranular linguistic information. The indicators’ level of compliance was evaluated based on four criteria: clarity, relevance, monitoring, and adequacy. Results and discussion: The structure defined in evaluating social policy indicators corresponds appropriately to that used with the 2-tuple fuzzy linguistic model. The evaluation resulted in a sorted list in which the indicator “Rate of change of timber forest production” had the best rating with a “very high” level of compliance; 10 other indicators had the “high” level of compliance, and the remaining two indicators were rated with “moderate” compliance. Conclusions: The 2-tuple fuzzy linguistic model allowed the appropriate evaluation of the level of compliance with the desirable attributes of indicators
{"title":"Application of a multigranular approach based on the 2-tuple fuzzy linguistic model for the evaluation of forestry policy indicators","authors":"José Luis Romo-Lozano, Rosa M. Rodríguez, R. Rendón-Medel, Álvaro Labella","doi":"10.5154/R.RCHSCFA.2020.06.043","DOIUrl":"https://doi.org/10.5154/R.RCHSCFA.2020.06.043","url":null,"abstract":"Introduction: The need for quality indicators is well recognized by users and proponents of public policy evaluation. Indicators recurrently include qualitative attributes for which there are few studies assessing the level of compliance. Objective: To apply a multigranular approach, based on the 2-tuple fuzzy linguistic model, to evaluate 13 indicators of the National Forestry Program, established in the system of social policy indicators derived from the National Development Plan 2012-2018 of Mexico. Materials and methods: The method uses the 2-tuple fuzzy linguistic representation model and an extension called extended linguistic hierarchies, designed to solve problems with multigranular linguistic information. The indicators’ level of compliance was evaluated based on four criteria: clarity, relevance, monitoring, and adequacy. Results and discussion: The structure defined in evaluating social policy indicators corresponds appropriately to that used with the 2-tuple fuzzy linguistic model. The evaluation resulted in a sorted list in which the indicator “Rate of change of timber forest production” had the best rating with a “very high” level of compliance; 10 other indicators had the “high” level of compliance, and the remaining two indicators were rated with “moderate” compliance. Conclusions: The 2-tuple fuzzy linguistic model allowed the appropriate evaluation of the level of compliance with the desirable attributes of indicators","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70580238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.5154/R.RCHSCFA.2020.07.048
J. E. Sáenz-Ceja, J. T. Sáenz-Reyes, David Castillo-Quiroz, F. Castillo-Reyes, H. J. Muñoz-Flores, Agustín Rueda-Sánchez
Introduction: Ecological niche modeling is a fundamental tool to know the areas suitable for the establishment of silvopastoral systems, based on the environmental requirements of the species. Objectives: To model the ecological niche of the forage species Chloris gayana Kunth and Eragrostis curvula (Schrad.) Nees, and the conifers Pinus devoniana Lindley, Pinus lawsonii Roezl ex Gordon and Pinus montezumae Lambert and to identify potential areas for silvopastoral systems. Materials and methods: The ecological niche was modeled based on data from georeferenced collection sites in Mexico and 23 environmental variables. Subsequently, areas were identified and the extent, where forage species converge with conifers in both agricultural and forest areas, was estimated. Results and discussion: Potential areas for silvopastoral systems with the five species were found mainly in the Neovolcanic Axis and the Sierra Madre del Sur, with a greater area suitable for agricultural areas compared to forestry areas. The ecological niche models had high predictive capacity with an area under the curve values greater than 0.93. Altitude and annual temperature range were the most important variables. Pinus devoniana had the largest potential area to be intercropped with C. gayana and E. curvula. Conclusions: Mexico has the potential to establish silvopastoral systems with the species understudy in the center and south of the country, which could contribute to decreasing soil degradation, provide forage for livestock and maintain tree cover for agricultural and forest areas.
{"title":"Potential areas for silvopastoral systems based on the ecological niche of two forage crops and three species of conifers","authors":"J. E. Sáenz-Ceja, J. T. Sáenz-Reyes, David Castillo-Quiroz, F. Castillo-Reyes, H. J. Muñoz-Flores, Agustín Rueda-Sánchez","doi":"10.5154/R.RCHSCFA.2020.07.048","DOIUrl":"https://doi.org/10.5154/R.RCHSCFA.2020.07.048","url":null,"abstract":"Introduction: Ecological niche modeling is a fundamental tool to know the areas suitable for the establishment of silvopastoral systems, based on the environmental requirements of the species. Objectives: To model the ecological niche of the forage species Chloris gayana Kunth and Eragrostis curvula (Schrad.) Nees, and the conifers Pinus devoniana Lindley, Pinus lawsonii Roezl ex Gordon and Pinus montezumae Lambert and to identify potential areas for silvopastoral systems. Materials and methods: The ecological niche was modeled based on data from georeferenced collection sites in Mexico and 23 environmental variables. Subsequently, areas were identified and the extent, where forage species converge with conifers in both agricultural and forest areas, was estimated. Results and discussion: Potential areas for silvopastoral systems with the five species were found mainly in the Neovolcanic Axis and the Sierra Madre del Sur, with a greater area suitable for agricultural areas compared to forestry areas. The ecological niche models had high predictive capacity with an area under the curve values greater than 0.93. Altitude and annual temperature range were the most important variables. Pinus devoniana had the largest potential area to be intercropped with C. gayana and E. curvula. Conclusions: Mexico has the potential to establish silvopastoral systems with the species understudy in the center and south of the country, which could contribute to decreasing soil degradation, provide forage for livestock and maintain tree cover for agricultural and forest areas.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":"27 1","pages":"289-308"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70580440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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