Scientia Forestalis最新文献_第9页

Forest species in ecological restoration of Cerrado vegetation 塞拉多植被生态恢复中的森林物种

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.05

D. Vieira, Pedro Henrique Fernandes Silva, Renan Augusto Miranda Matias, M. B. X. Valadão, Thalles Oliveira Martins, F. Ribeiro, J. R. Pinto, A. Gatto

引用次数: 0

Effect of salinity on the vegetative characteristics, biomass and chemical content of red mangrove seedlings in the south of Iran 盐度对伊朗南部红树幼苗营养特性、生物量和化学成分的影响

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.16

M. Moslehi, T. Pypker, Asghar Bijani, A. Ahmadi, Mohammad Hossien Sadeghzade Hallaj

{"title":"Effect of salinity on the vegetative characteristics, biomass and chemical content of red mangrove seedlings in the south of Iran","authors":"M. Moslehi, T. Pypker, Asghar Bijani, A. Ahmadi, Mohammad Hossien Sadeghzade Hallaj","doi":"10.18671/scifor.v49n132.16","DOIUrl":"https://doi.org/10.18671/scifor.v49n132.16","url":null,"abstract":"We selected six months old seedlings of Rhizophora mucronata (Lam.) to evaluate the effect of different salinity on seedling growth, biomass and ion content in roots and leaves. We planted red mangrove propagules in plastic pots and irrigated them with freshwater (control), low salinity (EC: 8500 μm.cm; 25% sea water+75% freshwater), moderate salinity (EC: 29000 μm.cm; 50% sea water+50% freshwater) and high salinity (EC: 57000 μm.cm; 100% sea water) for six months. Seedling grown at moderate salinity, had higher leaf number, collar diameter, height, root length, root dry weight, total dry mass weight and leaf area relative to seedlings grown at lower or higher concentrations. Concentrations of sodium and chloride ions in both leaves and roots increased with increasing salinity. Calcium, potassium and nitrogen in both leaves and roots were highest in the moderate treatment, followed by control, low salinity and high salinity treatments. All ions were higher in leaves, except for calcium, which was higher in roots. It can be concluded that the moderate salinity levels as it balances seedling quality with reduced demand for freshwater.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"11 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88799711","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

Mapping of natural populations of Euterpe oleracea Mart., structure and estimates of fruit production at Araguari River, Eastern Amazon 欧洲甘蓝自然居群的制图。，结构和估计的水果生产在阿拉瓜里河，亚马逊东部

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.13

A. C. Santos, J. L. Freitas, Francisco de Oliveira Cruz Junior

{"title":"Mapping of natural populations of Euterpe oleracea Mart., structure and estimates of fruit production at Araguari River, Eastern Amazon","authors":"A. C. Santos, J. L. Freitas, Francisco de Oliveira Cruz Junior","doi":"10.18671/scifor.v49n132.13","DOIUrl":"https://doi.org/10.18671/scifor.v49n132.13","url":null,"abstract":"This study aimed to identify the occurrence of natural populations of açaí palms in the low-land forest at Araguari River; to map the native açaí palm areas; to assess the structure of the açaí areas; to quantify the clumps of açaí palm trees and to estimate the fruit production. The study was conducted in the Araguari River Valley, state of Amapá, eastern Amazon, Brazil, covering the municipalities of Ferreira Gomes and Cutias, over a 68 km extension. For the sampling of the açaí palm area, we established 89 (10 m x 20 m) sampling plots, totaling a sample area of 1.78 ha. To measure the height and diameter of the palm trees, only palms with circumference at breast height (CBH) ≥ 20 cm were considered. The quantification of açaí fruits production was obtained through information provided by the owners who commercialize the fruit in the region. It was found that the açaí palm tree is present in the entire plantphysiognomy of the studied area. The high density and the high number of palms per clump shows that the açaí area is native and not managed. The average height of 16 m of the açaí palm indicates a need to reduce the dominant height of the palm trees in these places. The low estimate of açaí palm tree fruit production led us to conclude that the native açaí palm area of the Araguari River valley are of low production, although the areas are densely populated with açaí palm trees.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"19 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78205627","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

Grafting between species of the genus Handroanthus for the production of multi-colored flower canopies 为生产多色花冠而进行的Handroanthus属种间嫁接

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.07

Ingridh Medeiros Simões, J. Lopes, E. R. Schmildt, Adésio Ferreira, Julcinara Oliveira Baptista, C. P. D. Araujo, Thuanny Lins Monteiro Rosa, Genilda Canuto Amaral, R. S. Alexandre

{"title":"Grafting between species of the genus Handroanthus for the production of multi-colored flower canopies","authors":"Ingridh Medeiros Simões, J. Lopes, E. R. Schmildt, Adésio Ferreira, Julcinara Oliveira Baptista, C. P. D. Araujo, Thuanny Lins Monteiro Rosa, Genilda Canuto Amaral, R. S. Alexandre","doi":"10.18671/scifor.v49n132.07","DOIUrl":"https://doi.org/10.18671/scifor.v49n132.07","url":null,"abstract":"Urban afforestation is done with trees with adequate size for streets, squares and avenues, as well as those with showy canopies. Trees of the genus Handroanthus and belonging to the family Bignoniaceae are widely used due to their canopies flowering in different colors used for landscape purposes. The use of techniques such as grafting, which assist in early flowering and the possibility of canopies producing flowers of different colors can be of importance. This study aimed to analyze the grafting compatibility in bifurcated seedlings of the genus Handroanthus for the production of multi-colored flowering canopies. The experiment was constituted by 10 treatments, with different scion/rootstock combinations. The studied species were Handroanthus heptaphyllus (Hh), Handroanthus impetiginosus (Hi), Handroanthus chrysotrichus (Hc), and Handronthus roseo-albus (Hr-a), using Hi as the only rootstock species (via seeds), and the remaining species, including Hi from adult plants as scions. Single-stem wedge grafting on a bifurcated seedling was adopted for the following combinations: 1. Hc/Hi; 2. Hr-a/Hi; 3. Hh/Hi; 4. Hi/Hi, whereas double-stem wedge grafting was adopted for: 5. Hi/Hi and Hc/Hi; 6. Hi/Hi and Hr-a/Hi; 7. Hi/Hi and Hh/Hi; 8. Hc/Hi and Hr-a/Hi; 9. Hc/Hi and Hh/Hi; and 10. Hr-a/Hi and Hh/Hi), with three replications of five seedlings. The take percentage and vigor were evaluated 50 days after grafting. The highest establishment rates for the single-stem wedge grafting were obtained by the same species grafts Hi/Hi (80%) and by the Hr-a/Hi (86.6%) combination; whereas for the double-stem grafting the following percentages of combinations were obtained: Hc/Hi (93.3%) and Hr-a/Hi (93.3%); Hc/Hi (73.3%) and Hh/Hi (86.6%); and Hr-a/Hi (86.6%) and Hh/Hi (86.6%).","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88992315","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

Restauração de uma mata ciliar: análise da produtividade efetiva das operações sob condições de incertezas 河岸林恢复:不确定条件下作业的有效生产力分析

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.12

Jean Fernando Silva Gil, M. G. D. Silva, Danilo Simões

引用次数: 1

Water storage in Eucalyptus urophylla progenies 尾叶桉子代水分储存

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.10

Laerte Scanavacca Júnior, J. Garcia

引用次数: 1

Configuração de redes neurais artificiais para relação hipsométrica de árvores de Eucalyptus spp. 桉树高度关系的人工神经网络配置。

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.08

Jonas Elias Castro da Rocha, Marlon Roque Nogueira Junior, Ivaldo da Silva Tavares Júnior, Jianne Rafaela Mazzini de Souza, Lucas Sérgio de Sousa Lopes, Márcio Lopes da Silva

{"title":"Configuração de redes neurais artificiais para relação hipsométrica de árvores de Eucalyptus spp.","authors":"Jonas Elias Castro da Rocha, Marlon Roque Nogueira Junior, Ivaldo da Silva Tavares Júnior, Jianne Rafaela Mazzini de Souza, Lucas Sérgio de Sousa Lopes, Márcio Lopes da Silva","doi":"10.18671/scifor.v49n132.08","DOIUrl":"https://doi.org/10.18671/scifor.v49n132.08","url":null,"abstract":"This study explores algorithms and functions of activation of artificial neural networks (ANNs) to predict the total height of Eucalyptus spp. The objective was to recommend the best RNA configurations for this variable. The data came from 2,888 trees. The trained ANNs presented DBH, clone, age, age class and diametric class as input variables. The total height was the output variable. Five algorithms and six activation functions were combined in the hidden and output layers, totaling 18,125 trained ANNs. ANNs were evaluated using linear correlation ( ŷy r ), square root of the average error (RMSE%), bias and histograms of ŷy r and RMSE%. The trained ANNs obtained RMSE% ranging from 0.07% to 396.3% and ŷy r of -0.7130 to 0.9998. The ANNs was performed using the Neuro 4.0.6 software. With the exception of ANN with the Manhattan Update Rule algorithm, the best ANN selected in the validation showed a Configuração de redes neurais artificiais para relação hipsométrica de árvores de Eucalyptus spp. Scientia Forestalis, 49(132), e3706, 2021 2/11 correlation above 0.97, and RMSE% and bias close to zero. The Backpropagation, Resilient Propagation, Scaled Conjugate Gradient and Quick Propagation algorithms presented satisfactory results in height modeling. The logistic and log activation functions are efficient for the hidden and output layers, respectively. In validation, the 12-10-1 network architecture with a Resilient Propagation algorithm showed the highest precision, with RMSE of 0.067 m. On the other hand, the architecture 12-14-1 with the Manhattan Update Rule algorithm resulted in the lowest precision, with RMSE of 3.13 m. The 12-10-1 network architecture, with Resilient Propagation algorithm and logistical activation function, can be used in the training for the prediction of the total height of Eucalyptus spp.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"26 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85053772","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

Rendimento e qualidade da madeira de Eucalyptus benthamii Maiden et Cambage de rotação longa no processo de desdobro 本塔米桉(Eucalyptus benthamii Maiden et Cambage)木材在长轮作过程中的产量和品质

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.01

Gustavo Faggiani Tomio, Alexsandro Bayestorff da Cunha, M. A. Brand, Ulisses de Arruda Córdova

引用次数: 0

Primeiro registro do ataque de Costalimaita ferruginea em clones de eucalipto em Rondônia 在rondonia中首次记录了桉树无性系中Costalimaita ferruginea的攻击

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.18

Paulo Roberto Magistrali, J. Batista, Samuel de Carvalho Andrade, Janice Ferreira do Nascimento, Iris Cristiane Magistrali

引用次数: 0

Atributos microbiológicos do solo sob áreas eucalipto e florestas estacionais 桉树和季节性森林下土壤的微生物属性

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2021-12-01 DOI: 10.18671/scifor.v49n132.03

Ane Gabriele Vaz Souza, Gabriela Gomes da Silva, Gabriela Aparecida Beserra, Lavínia Alves de Souza, Valdivino Domingos de Oliveira Júnior, Cleber Tavares da Rocha Filho, Milleny Nogueira Serafim, L. Santos, Talles Eduardo Borges dos Santos, Vagner Santiago do Vale

引用次数: 0