Revista Chapingo Serie Ciencias Forestales Y Del Ambiente最新文献_第8页

Root growth of Taxodium mucronatum Ten. planted in an urban area 紫紫杉的根系生长。种植在市区的

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-12-01 DOI: 10.5154/r.rchscfa.2019.08.064

Pablo Hernández-López, L. Mohedano-Caballero, D. Rodríguez-Trejo, T. Martínez-Trinidad

{"title":"Root growth of Taxodium mucronatum Ten. planted in an urban area","authors":"Pablo Hernández-López, L. Mohedano-Caballero, D. Rodríguez-Trejo, T. Martínez-Trinidad","doi":"10.5154/r.rchscfa.2019.08.064","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.08.064","url":null,"abstract":"Introduction: The ahuehuete (Taxodium mucronatum Ten.), National Tree of Mexico, is \u0000frequently found in urban green areas, in conditions of restricted humidity and compacted soils. These characteristics negatively affect growth and survival. \u0000 \u0000Objective: To evaluate root growth of young ahuehuete trees by the effect of the \u0000frequency of irrigation and loosening of the soil surrounding the planting strain. \u0000 \u0000Materials and methods: 24 trees 2 m high were planted in an urban area. The experiment was established as a completely random design with factorial arrangement: a) irrigation frequency (frequent [once weekly] and spaced [once every two weeks]) and b) treatment of the soil surrounding the plantation strain (soil with and without loosening). The growth of the root system was monitored for 12 months through digital photographs, obtained from rhizotrons installed on a side wall of each plantation strain. \u0000 \u0000Results and discussion: The original compaction of the site did not present restrictive levels for growth; therefore, the surrounding loosening did not significantly improve (P > 0.1) short-term root growth. Root length (267.75 to 453.28 cm) showed no statistically significant differences for the irrigation and soil factors and their interaction; however, the number of roots was affected by the interaction of the factors (P ≤ 0.1). Trees with frequent irrigation and soil without loosening developed a higher number of roots (190.5). \u0000 \u0000Conclusion: The interaction of irrigation frequency and soil condition influences the number of roots, but not the length.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43678086","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}

引用次数: 0

Analysis of basal area increment of Pinus hartwegii Lindl. at different altitudes and aspects on Jocotitlán Mountain, State of Mexico 红松林基底面积增量分析。在不同的高度和角度在Jocotitlán山，墨西哥州

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-12-01 DOI: 10.5154/r.rchscfa.2019.10.074

Angélica Núñez-García, A. Gómez‐Guerrero, Teresa M. Terrazas-Salgado, J. Vargas-Hernández, J. Villanueva‐Díaz

{"title":"Analysis of basal area increment of Pinus hartwegii Lindl. at different altitudes and aspects on Jocotitlán Mountain, State of Mexico","authors":"Angélica Núñez-García, A. Gómez‐Guerrero, Teresa M. Terrazas-Salgado, J. Vargas-Hernández, J. Villanueva‐Díaz","doi":"10.5154/r.rchscfa.2019.10.074","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.10.074","url":null,"abstract":"Introduction: Basal area increment (BAI) is an indicator of forest productivity that varies with tree age and site factors such as soil and climate. Objective: To generate tree-ring width index (RWI) and BAI chronologies of Pinus hartwegii Lindl., relate them to climatic variables, and study the variation in BAI at different altitudes and aspects. Materials and methods: Four observation sites were identified, combining northwest (NW) and southwest (SW) aspects, as well as altitudes of 3 800 and 3 700 m. At each site, the temperature was recorded every four hours for 435 days and 32 growth ring segments were collected using a Pressler´s increment borer. Tree-ring width was measured and BAI was calculated; the correlation index between these indicators and the climatic variables was Pearson’s correlation coefficient. Results and discussion: The RWI series from the four observation sites had an intercorrelation of 0.33 (P < 0.01). Two low-growth periods were detected, one between 1950 and 1960 and the other between 1990 and 2005. Site SO-3700 had a different growth pattern, due to a second growth phase beginning in 1978, possibly a benefit resulting from increased temperature. The previous autumn temperature, spring temperature and April-September precipitation of the current year explained the variation in BAI (P < 0.05). Conclusion: The BAI of P. hartwegii could respond favorably to the predicted increases in temperature at an altitude of 3 700 m with southwest aspect.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49234166","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}

引用次数: 2

Impacts of tropical hurricanes on the vegetation cover of the lower basin and estuary of San José del Cabo, Baja California Sur, Mexico 热带飓风对墨西哥下加利福尼亚州圣何塞湾下游盆地和河口植被覆盖的影响

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-12-01 DOI: 10.5154/r.rchscfa.2020.03.011

Marcos Shiba-Reyes, E. Troyo, R. Martínez-Rincón, A. Breceda

{"title":"Impacts of tropical hurricanes on the vegetation cover of the lower basin and estuary of San José del Cabo, Baja California Sur, Mexico","authors":"Marcos Shiba-Reyes, E. Troyo, R. Martínez-Rincón, A. Breceda","doi":"10.5154/r.rchscfa.2020.03.011","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2020.03.011","url":null,"abstract":"Introduction: Tropical hurricanes modify composition and structure of \u0000ecosystems. Objective: To analyze the impact of tropical hurricanes on the recovery and \u0000resilience of vegetation cover. Materials and methods: The resilience of the lower basin and estuary of San \u0000Jose del Cabo was evaluated by studying the impact of 11 tropical hurricanes \u0000(2013-2017) on the vegetation cover. Landsat images were analyzed for each \u0000event and two SPOT-6 images for the Hurricane Lidia. The areas of gain, stability, \u0000loss and recovery of vegetation types were estimated based on the analysis of \u0000changes in the Normalized Difference Vegetation Index (NDVI). Results and discussion: Average stability of vegetation cover was 90 %; \u0000however, in the case of hurricane Odile (2014) and Lidia (2017), stability \u0000decreased considerably, with a loss of 35.4 and 20.5 %, respectively, being the \u0000perennial herbaceous vegetation the most affected. One year after Odile and Lidia, \u0000recovery was 8.4 % and 25.4 %, respectively; the most recovered vegetation type \u0000was reed-tree. The analysis of SPOT-6 images allowed the detailed observation of \u0000Lidia's effect on palm grove. The main cause of its loss was runoff from the stream, \u0000which favored the growth of invasive species (Arundo donax L. and Tamarix sp.); \u0000furthermore, it was estimated that 1.4 ha were deforested, and an area of 20 ha \u0000affected by fire in 2017. Conclusion: Vegetation is resilient to tropical hurricanes; however, events that \u0000provide more than 50 % of annual precipitation decrease the capacity of vegetation \u0000to recover.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43126514","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}

引用次数: 2

Litterfall from tropical dry forest trees scattered in pastures 散落在牧场上的热带干燥森林树木的落叶

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2019.12.092

María de la Luz Avendaño-Yáñez, Colegio de Postgraduados. Campus Veracruz, Salome Quiroz-Martínez, S. Pérez-Elizalde, S. López-Ortiz, Costas y Comunidades A. C. Conselva, Colegio de Postgraduados Campus Montecillo Texcoco Estado México

{"title":"Litterfall from tropical dry forest trees scattered in pastures","authors":"María de la Luz Avendaño-Yáñez, Colegio de Postgraduados. Campus Veracruz, Salome Quiroz-Martínez, S. Pérez-Elizalde, S. López-Ortiz, Costas y Comunidades A. C. Conselva, Colegio de Postgraduados Campus Montecillo Texcoco Estado México","doi":"10.5154/r.rchscfa.2019.12.092","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.12.092","url":null,"abstract":"Introduction: Scattered trees from tropical dry forests (TDF) deposit significant amounts of leaf litter into pasture soils. \u0000Objective: To estimate the litterfall production during the dry season by scattered Lysiloma acapulcense (Kunth) Benth. and Vachellia pennatula (Schltdl. & Cham.) Seigler & Ebinger trees in pastures. \u0000Materials and methods: Ten scattered trees of each species were selected from a 10-ha pasture, and litter was collected during the dry season (November to May) and sorted into fractions. Leaf litter biomass, nitrogen (N) and lignin (L) content, and the lignin-nitrogen (L/N) ratio were assessed. Leaf litterfall was modelled over an annual cycle using a double logistic model. Means from all variables were compared between species using a t-test. Results and discussion: Litter, nitrogen and lignin content were similar between species. However, the L/N ratio was significantly higher (P \u0000Conclusion: The quantity and quality of leaf litter that scattered trees deposit in a pasture encourages the adoption of agroforestry systems, including tree species native to TDF","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44658432","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}

引用次数: 3

Index for the estimation of the occurrence of forest fires in large areas 估计大面积森林火灾发生的指数

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2019.11.082

J. M. Torres-Rojo, Centro de Investigación y Docencia Económica

{"title":"Index for the estimation of the occurrence of forest fires in large areas","authors":"J. M. Torres-Rojo, Centro de Investigación y Docencia Económica","doi":"10.5154/r.rchscfa.2019.11.082","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.11.082","url":null,"abstract":"Introduction: Estimating the risk of occurrence of a fire contributes to reducing human, infrastructure and natural resource losses; promoting activities to maintain and restore fire regimes; and optimizing resources for suppression. \u0000Objective: To develop an index of occurrence of forest fires on large areas, called Area at risk of fire (SeR). \u0000Materials and methods: The index corresponds to the area associated with a probability level measured at the right tail of the density distribution of the area affected annually by forest fires. The density distribution was estimated from the history of the area affected (1970-2018) in Mexico by state. The fit was performed by minimizing the Kolmogorov- Smirnov statistic with four models: exponential, gamma, lognormal and Weibull. Two related indicators are proposed: proportion of forest area affected by wildfires (PSeR) and incremental area at risk (ISeR). \u0000Results and discussion: all models showed a statistically significant fit (P \u0000Conclusion: SeR is an extreme event risk index that provides useful information and has a statistically acceptable predictive power.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42585690","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}

引用次数: 0

Dendrogeomorphological potential of Pinus ponderosa Douglas ex C. Lawson for the reconstruction of flash floods in Los Picos de Davis, Coahuila 黄松（Pinus yellowosa Douglas ex C.Lawson）在重建科阿韦拉洛斯皮科德戴维斯（Los Picos de Davis）山洪中的树木地貌潜力

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2020.02.006

Wendi Sánchez-Asunción, Julián Cerano-Paredes, O. Franco‐Ramos, Eladio H. Cornejo-Oviedo, J. Villanueva‐Díaz, C. Flores-López, M. Garza-Martínez

{"title":"Dendrogeomorphological potential of Pinus ponderosa Douglas ex C. Lawson for the reconstruction of flash floods in Los Picos de Davis, Coahuila","authors":"Wendi Sánchez-Asunción, Julián Cerano-Paredes, O. Franco‐Ramos, Eladio H. Cornejo-Oviedo, J. Villanueva‐Díaz, C. Flores-López, M. Garza-Martínez","doi":"10.5154/r.rchscfa.2020.02.006","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2020.02.006","url":null,"abstract":"Introduction: Geomorphological processes, such as flash floods, affect the natural growth of trees. From the \u0000dating of disturbances in growth rings, historical events useful for the prevention and mitigation of natural \u0000hazards were reconstructed. \u0000Objectives: To determine the dendrogeomorphological potential of Pinus ponderosa Douglas ex C. Lawson to date \u0000and reconstruct flash floods in Los Picos de Davis, Coahuila. \u0000Materials and methods: Samples were collected from 19 dead and living trees with evidence of disturbance \u0000(impact scars, growth suppression and compression wood). The samples were prepared, dated and analyzed \u0000based on dendrogeomorphological techniques. The reconstructed flash floods were related to historical climate \u0000information from hurricanes, tropical cyclones and precipitation. \u0000Results and discussion: We were able to date 68 % of the samples with evidence of disturbance; the correlation \u0000between growth series was significant (r = 0.403; P < 0.001). The most common anomalies were in the form of \u0000scars (72 %), growth suppression (20 %) and compression wood (8 %). Ten flash floods were reconstructed. The \u0000causative processes were flash floods, caused by extreme hydrometeorological phenomena, including hurricanes \u0000“Alex” in 2010, “Dolly” in 2008 and “Claudette” in 2003. There is synchrony between geomorphological processes \u0000and hydrometeorological phenomena. \u0000Conclusions: P. ponderosa ring disturbances are useful to reconstruct the frequency and distribution of \u0000geomorphological processes.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47038610","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}

引用次数: 2

Current and future potential distribution and identification of suitable areas for the conservation of Cedrela odorata L. in the Yucatan Peninsula 尤卡坦半岛雪松目前和未来的潜在分布和适宜保护区的确定

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2019.10.075

Gyorgy Eduardo Manzanilla-Quijada, E. Treviño-Garza, O. Aguirre-Calderón, José I. Yerena-Yamallel, U. Manzanilla-Quiñones

{"title":"Current and future potential distribution and identification of suitable areas for the conservation of Cedrela odorata L. in the Yucatan Peninsula","authors":"Gyorgy Eduardo Manzanilla-Quijada, E. Treviño-Garza, O. Aguirre-Calderón, José I. Yerena-Yamallel, U. Manzanilla-Quiñones","doi":"10.5154/r.rchscfa.2019.10.075","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.10.075","url":null,"abstract":"Introduction: Red cedar (Cedrela odorata L.) is appreciated for its wood, a situation that has caused poor \u0000forest management and, therefore, a decrease in its areas of distribution. \u0000Objective: To delimit the current and future potential distribution of C. odorata and to identify suitable \u0000seed-producing areas for the conservation of the species in the Yucatan Peninsula. \u0000Materials and methods: Records of the presence of C. odorata were obtained from the Global Biodiversity \u0000Information Facility (GBIF), the National Forest and Soil Inventory (INFyS in Spanish) and the book “Arboles \u0000tropicales de Mexico”. The modeling was done in MaxEnt using current environmental variables and future \u0000(2030) climate change scenarios at 1 km2 spatial resolution. Seventy-five percent of the records were used \u0000to train the models and 25 percent to validate them. The variables with the greatest contribution were \u0000determined by the jackknife test. \u0000Results and discussion: The estimated current potential distribution of C. odorata was 404917 ha. Climate \u0000change simulations predict a reduction (31 to 44.8 %) of the suitable habitat, where the natural protected \u0000areas (ANPs) of Calakmul, Los Petenes and Ria Celestun would serve as climate refuges, conserving about \u000076472 ha. The important variables in the distribution were: vegetation (34.7 %), precipitation of the wettest \u0000month (14.6 %), edaphology (8.8 %), average temperature of the coldest quarter (8.6 %) and slope (7 %). \u0000Conclusion: The models allowed the identification of suitable areas with habitat quality of C. odorata. In \u0000view of the threats of climate change, the distribution of C. odorata in ANPs would help conservation and \u0000restoration programs in situ.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42688609","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}

引用次数: 4

Angle sampling method for the inventory of teak plantations (Tectona grandis L. f.) 柚木人工林调查的角度抽样法

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2019.11.081

Javier A. Mora-Espinoza, Alberto Peñalver-Romeo, Fernando J. Aguilar-Torres, José R. Rivas-Barzola, Ángel Triana-Tomalá

{"title":"Angle sampling method for the inventory of teak plantations (Tectona grandis L. f.)","authors":"Javier A. Mora-Espinoza, Alberto Peñalver-Romeo, Fernando J. Aguilar-Torres, José R. Rivas-Barzola, Ángel Triana-Tomalá","doi":"10.5154/r.rchscfa.2019.11.081","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.11.081","url":null,"abstract":"Introduction: Sampling by fixed area plots is the usual practice in forest inventories, despite the considerable time involved. An alternative method of sampling is the angle count or Bitterlich method. \u0000Objective: To evaluate the accuracy and efficiency of the angle sampling method for the determination of dasometric variables in teak (Tectona grandis L. f.) plantations. \u0000Materials and methods: In a three-year teak plantation, 21 circular plots of 500 m2 were established. In each plot, the diameter at breast level, the height and position of each tree, the working times, the number of trees per hectare, the diameter of the average basal area, the total basal area, the average Lorey level and the total volume were determined. Angular sampling was simulated using basal area factors (BAF) of 0.5, 1, 1.5 and 2. The estimates of the variables for each BAF and fixed area plots were compared using ANOVA and the relative efficiency was determined. \u0000Results and discussion: The ANOVA did not detect significant differences (P \u0000Conclusions: Angular counting is accurate and more efficient for estimating dasometric variables in young teak plantations.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45532665","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}

引用次数: 1

Carbohydrate-based urban soil amendments to improve urban tree establishment 基于碳水化合物的城市土壤改良剂改善城市树木的建立

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2019.10.076

L. M. Morales-Gallegos, P. E. C. F. C. D. Postgraduados, T. Martínez-Trinidad, A. Gómez‐Guerrero, J. Suárez-Espinosa, Posgrado en Estadística Colegio de Postgraduados

{"title":"Carbohydrate-based urban soil amendments to improve urban tree establishment","authors":"L. M. Morales-Gallegos, P. E. C. F. C. D. Postgraduados, T. Martínez-Trinidad, A. Gómez‐Guerrero, J. Suárez-Espinosa, Posgrado en Estadística Colegio de Postgraduados","doi":"10.5154/r.rchscfa.2019.10.076","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.10.076","url":null,"abstract":"Introduction: A factor limiting the development of tree vegetation in urban environments \u0000is the condition of the soil. \u0000Objective: To evaluate the effect of the application of carbohydrates (sucrose and glucose) \u0000to the soil regarding the growth and vitality of jacaranda trees (Jacaranda mimosifolia D. Don) \u0000planted in urban areas. \u0000Materials and methods: Eight carbohydrate treatments and one control (water) were \u0000applied. Increase in height and diameter, foliage color, chlorophyll fluorescence, dry root \u0000matter, root starch, respiration and soil moisture were evaluated. An analysis of variance \u0000and a comparison of means was performed (Tukey, P < 0.05); when the normal distribution \u0000of the data was not proved, nonparametric methods were used (Kruskal-Wallis and Wilcoxon \u0000rank-sum test). \u0000Results and discussion: The increase in height and diameter, the green color of the foliage \u0000and the fluorescence of the chlorophyll showed no significant differences (P > 0.05). Dry root \u0000weight and soil respiration were significantly different (P < 0.05) with higher response in the \u0000highest carbohydrate treatment (80 g·L-1 glucose with 80 g·L-1 sucrose). There was no effect on \u0000the characteristics of the aerial part, possibly due to the short evaluation time (about one year). \u0000Conclusion: The amendment of glucose and sucrose to the soil in urban trees stimulated the \u0000root growth of J. mimosifolia.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43768983","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}

引用次数: 2

Populations of Pinus radiata D. Don differ in low-temperature tolerance and growth rate 辐射松(Pinus radiata D. Don)种群在低温耐受性和生长速度上存在差异

IF 0.6 4区农林科学

Revista Chapingo Serie Ciencias Forestales Y Del Ambiente Pub Date : 2020-08-30 DOI: 10.5154/r.rchscfa.2019.12.096

Gardenia de Jesus-Reyes, P. E. C. F. C. D. Postgraduados, J. Vargas-Hernández, N. Cruz‐Huerta, J. López-Upton, P. E. C. F. C. D. Postgraduados

{"title":"Populations of Pinus radiata D. Don differ in low-temperature tolerance and growth rate","authors":"Gardenia de Jesus-Reyes, P. E. C. F. C. D. Postgraduados, J. Vargas-Hernández, N. Cruz‐Huerta, J. López-Upton, P. E. C. F. C. D. Postgraduados","doi":"10.5154/r.rchscfa.2019.12.096","DOIUrl":"https://doi.org/10.5154/r.rchscfa.2019.12.096","url":null,"abstract":"Introduction: In Pinus radiata D. Don, one of the most widely planted pines globally, frost damages plantations at the seedling stage. Objective: To determine differences in growth and tolerance to low temperatures of native populations (Guadalupe and Cedros islands) of P. radiata in greenhouse and outdoors conditions, under different levels of soil moisture. \u0000Materials and methods: Low-temperature tolerance was determined through the damage index (DI) in freezing tests at -12 °C during 4 h. In each environment (greenhouse and outdoors) two soil moisture treatments were defined (irrigation and drought). The DI was evaluated with the method of electrical conductivity in primary needles during winter and spring. The absolute growth rate (AGR) of the terminal shoot was obtained by measuring the total height of the seedlings. \u0000Results and discussion: Average DI of 50 and 64 % were obtained in winter and spring, respectively. In greenhouse, DI was different (P ≤ 0.05) between populations, being higher in Guadalupe (>59 %) than in Cedros ( \u0000Conclusion: The population of Guadalupe is more sensitive to low temperatures with greater variation in DI, due to its growth dynamics. Differences between populations are useful in the genetic improvement of the species.","PeriodicalId":54479,"journal":{"name":"Revista Chapingo Serie Ciencias Forestales Y Del Ambiente","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42023644","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}

引用次数: 0