Stand development and production dynamics of loblolly pine under a range of cultural treatments in north-central Florida USA

Martin, Timothy A.; Jokela, Eric J.

doi:10.1016/j.foreco.2004.01.004

Cited by 74 publications

(57 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Trata-se de uma distribuição de biomassa típica de povoamentos adultos, que se caracterizam pelo maior acúmulo de biomassa no tronco (75,8 %) (REIS e BARROS, 1990;MILLER, 1995;GONÇALVES et al, 2004). Bizon (2005), ao estudar a sustentabilidade de produção com base no balanço de nutrientes em 8 povoamentos de Pinus taeda, com idades en-da que a densidade de plantas aumenta, a biomassa total por unidade de área também aumenta, ao passo que a produção de biomassa total por indivíduo diminui, mas com elevação da biomassa relativa de tronco.…”

Section: Resultados E Discussão Estoque De Biomassaunclassified

“…A mesma tendência também foi verificada por outros autores em povoamentos de Eucalyptus grandis e de Pinus taeda (PEREIRA et al, 1984;ZHANG et al, 2004;MARTIN e JOKELA, 2004). Bizon (2005), quando estudou 8 povoamentos de Pinus taeda, atribuiu aos diferentes níveis de produtividade, a diferença na alocação de biomassa para o componente raiz.…”

Section: Resultados E Discussão Estoque De Biomassaunclassified

“…As determinações analíticas foram realizadas no Laboratório de Ecologia Florestal do Departamento de Ciências Florestais/UFSM, segundo Miyazawa et al (1999). O N foi determinado pelo método Kjeldhal, no extrato de digestão sulfúrica; B por espectrofotometria com digestão seca; e os demais elementos, no extrato de digestão nítrico-perclórico, sendo Ca, Mg, Cu, Fe, Mn e Zn por espectrofotometria de absorção atômica, P por espectrofotometria, K por fotometria de chama e S por turbidimetria.…”

Section: Estimativa Dos Nutrientes E Implicações Da Colheita Florestalunclassified

See 2 more Smart Citations

Biomassa e nutrientes no corte raso de um povoamento de <i>Pinus taeda </i>L. de 27 anos de idade em Cambará do Sul – RS

Schumacher

Witschoreck²,

Calil³

et al. 2013

Ciênc. Florest.

View full text Add to dashboard Cite

RESUMOEste trabalho, realizado em um povoamento de Pinus taeda de 27 anos de idade no município de Cambará do Sul (RS) teve como objetivos: estimar a produção de biomassa, o estoque de nutrientes e avaliar o impacto nutricional de diferentes intensidades de remoção de biomassa com a colheita florestal. A biomassa foi estimada por meio do ajuste (24,8 %), acículas (19,0 %), casca do tronco (8,7 %) e galhos secos (3,9 %). A colheita de toda biomassa acima do solo, quando comparada com a retirada apenas da madeira do tronco, acarreta uma elevação na exportação de nutrientes que pode variar de 58,0 % a 127,4 %, dependendo do nutriente, enquanto a remoção de biomassa aumentou 40,8 %. Palavras-chave: colheita florestal; produtividade; ciclagem de nutrientes; sustentabilidade. ABSTRACTThis study was conducted in a 27 year Pinus taeda stand in Cambará do Sul, Rio Grande do Sul state and aimed to estimate the biomass production, nutrient stock and to evaluate the nutritional impact in different forest harvesting intensities. Biomass was estimated through regression equation adjustments, with the cut of 15 trees distributed in 5 diametric classes. Nutrients stock was obtained through the product between the average content of nutrients in each biomass component and the number of trees per diametric class per hectare. Pinus taeda above ground biomass was estimated in 266.08 Mg ha

show abstract

Section: Resultados E Discussão Estoque De Biomassaunclassified

Section: Estimativa Dos Nutrientes E Implicações Da Colheita Florestalunclassified

See 1 more Smart Citation

Biomassa e nutrientes no corte raso de um povoamento de <i>Pinus taeda </i>L. de 27 anos de idade em Cambará do Sul – RS

Schumacher

Witschoreck²,

Calil³

et al. 2013

Ciênc. Florest.

View full text Add to dashboard Cite

show abstract

“…2-3 Mg.ha-'.year1 (Borders et al 2004;Martin and Jokela 2004), to 10 Mgha-'.year1 (Samuelson et a]. 2004), and up to 21 Mgeha-'-year1 (Adegbidi et al 2005).…”

mentioning

confidence: 99%

Above- and below-ground biomass accumulation, production, and distribution of sweetgum and loblolly pine grown with irrigation and fertilization

2008

View full text Add to dashboard Cite

Increased forest productivity has been obtained by improving resource availability through water and nutrient amendments. However, more stress-tolerant species that have robust site requirements do not respond consistently to irrigation. An important factor contributing to robust site requirements may be the distribution of biomass belowground, yet available information is limited. We examined the accumulation and distribution of above-and below-ground biomass in sweetgum (Liqrridambar sfyrac$lua L.) and loblolly pine (Pinus taeda L.) stands receiving irrigation and fertilization. Mean annual aboveground production after 4 years ranged from 2.4 to 5.1 ~g.ha-'.year' for sweetgum and from 5.0 to 6.9 ~g.ha-l.year-l for pine. Sweetgum responded positively to irrigation and fertilization with an additive response to irrigation + fertilization. Pine only responded to fertilization. Sweetgum root mass fraction (RME) increased with fertilization at 2 years and decreased with fertilization at 4 years. There were no detectable treatment differences in loblolly pine RMF. Development explained from 67% to 98% of variation in shoot versus root allometry for ephemeral and perennial tissues, fertilization explained no more than 5% of the variation in for either species, and irrigation did not explain any. We conclude that shifts in allocation from roots to shoots do not explain nutrient-induced growth stimulations.Rdsumd : Une augmentation de la productiviti de la forh a it6 obtenue en amkliorant la disponibiliti des ressources i l'aide d'amendements en eau et en nutriments. Cependant, les espkces plus tolirantes au stress ayant des exigences Bcologiques robustes ne riagissent pas de la mgme faqon i I'inigation. La distribution de la biomasse souterraine pourrait btre un facteur important contribuant aux exigences 6cologiques robustes. mais peu d'information est disponible. Nous avons itudi6 l'accumulation et la distribution de la biomasse akrienne et souterraine dans des peuplements de copalme d'AmMque (Liquidambar styracijZua L.) et de pin 1 encens (Pinus taeda L.) irriguis et fertilisks. La production adrienne annuelle moyenne apres quatre ans variait de 2,4 ?I 5,l Mg.ha-'an-' dans le cas du copalme d3Amirique et de 5,O B 6,9 Mgha-'.an-' dans le cas du pin 5 encens. Le copalme d'Amirique a riagi positivement B l'inigation et 1 la fertilisation tout en ayant une r6action additive lorsque ces deux traitements itaient appliquis. Le pin 1 encens a riagi uniquement 1 la fertilisation.La fraction de masse racinaire (FMR) du copalme d'Amirique augmentait avec la fertilisation aprks d e w ans et dirninuait avec la fertilisation aprhs 4 ans. Nous n'avons pas dktectk de diffkrence significative entre les traitements dans le cas de la FMR du pin 1 encens. La croissance a expliqu6 de 67 % B 98 % de la variation de l'allom6trie entre les pousses et les racines dans le cas des tissus iph6mkres et pirennes alors que la fertilisation n'a pas expliqui plus de 5 % de la variation chez I'une ou I'autre des dew espkces et que I'irrig...

show abstract

“…Valentine et al [5] constructed such a model that calculated the stem basal area at breast height (1.37 m) from chronological changes in tree height and height to the base of the live crown. Such models give insight into the commonly observed relationship between leaf area and stand growth [6][7][8] and into the efficacy of silvicultural treatments [9]. Resource managers ultimately manage tree crowns to realize objectives for stem diameter and growth rates, and leaf area is only one of the relevant properties of the crown [10].…”

Section: Introductionmentioning

confidence: 99%

Neighbor and Height Effects on Crown Properties Associated with the Uniform-Stress Principle of Stem Formation

Dean

2018

Forests

View full text Add to dashboard Cite

According to the uniform-stress principle of stem formation, the amount of leaf area a tree carries and the leverage it exerts on the stem determine the stem dimensions. Within an even-aged monoculture, the leaf area per tree and the leverage placed on the stem are functions of tree density and tree height. The uniform-stress principle presents the means to translate density effects on crown characteristics into stem dimensions and total standing volume. This approach is truly a top-down method of simulating growth tree and stand growth because leaf area and other crown properties must be determined before stem size and taper can be calculated. Each crown property influences either the sail area or the leverage placed on the stem, but the degree to which a specific crown property affects these parameters changes with stand density and height. Leverage is the more complicated of the two variables, being a function of the height to the base of the live crown and the vertical distribution of leaf area. The purpose of this brief review is to summarize the effects of stand density on the height to the base of the live tree and the vertical distribution of leaf area and the various ways these variables have been quantified.

show abstract

Stand development and production dynamics of loblolly pine under a range of cultural treatments in north-central Florida USA

Cited by 74 publications

References 41 publications

Biomassa e nutrientes no corte raso de um povoamento de <i>Pinus taeda </i>L. de 27 anos de idade em Cambará do Sul – RS

Biomassa e nutrientes no corte raso de um povoamento de <i>Pinus taeda </i>L. de 27 anos de idade em Cambará do Sul – RS

Above- and below-ground biomass accumulation, production, and distribution of sweetgum and loblolly pine grown with irrigation and fertilization

Neighbor and Height Effects on Crown Properties Associated with the Uniform-Stress Principle of Stem Formation

Contact Info

Product

Resources

About