Results 1 to 10 of about 2,239 (91)
Forest carbon sequestration on the west coast, USA: Role of species, productivity, and stockability. [PDF]
PLoS ONEForest ecosystems store large amounts of carbon and can be important sources, or sinks, of the atmospheric carbon dioxide that is contributing to global warming.
Paul J Chisholm, Andrew N Gray
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Nonlinear split-plot design modeling and analysis of rice varieties yield
Scientific African, 2023 In this research, a class of nonlinear split plot design models where the mean function of the split-plot model is not linearizable is presented. This was done by fitting intrinsically nonlinear split-plot design (INSPD) models using the Chapman-Richards
I.J. David, O.E. Asiribo, H.G. Dikko
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Applied Sciences, 2023 To study the deformation characteristics of crushed gangue under different water content conditions, the confined compaction test of crushed gangue was carried out under five different water content conditions by using a universal material testing ...
Pengfei Liang +4 more
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Composition of live, dead and downed trees in Järvselja old-growth forest
Metsanduslikud Uurimused, 2022 The study area is in the Järvselja Training and Experimental Forest Centre, Estonia. The conservation of Järvselja old-growth forest started in 1924 when the area was excluded from all management activities and left to natural development.
Kangur Ahto +16 more
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Verification of three-parameter models of dependence of height on the diameter at breast height for birch stands of the European part of Russia [PDF]
Сибирский лесной журнал, 2020 Of great importance when conducting forestry operations and scientific research is the accuracy of determining the height of trees. The height of trees in a particular area is usually calculated using models, where it is a function of diameter at breast ...
A. V. Lebedev, V. V. Kuzmichev
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Mathematics, 2023 To model dynamic systems in various situations results in an ordinary differential equation of the form dydt=g(y,t,θ), where g denotes a function and θ stands for a parameter or vector of unknown parameters that require estimation from observations.
Óscar Cornejo +3 more
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The Chapman-Richards Distribution and its Relationship to the Generalized Beta
Forest Ecosystems, 2019 Background The Chapman-Richards distribution is developed as a special case of the equilibrium solution to the McKendrick-Von Foerster equation. The Chapman-Richards distribution incorporates the vital rate assumptions of the Chapman-Richards growth ...
Jeffrey H. Gove +2 more
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Pesquisa Florestal Brasileira, 2010 This study was carried out aiming to fit a volumetric model and a growth function, as well to compare<br />the growth of teak (Tectona grandis) in a stand located at Iracema (RR) with the growth of teak stands located<br />at different areas ...
Helio Tonini +2 more
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Height-diameter model for natural black pine stands in Eğirdir region: Quantile regression approach
Turkish Journal of Forestry, 2022 Black pine (Pinus nigra JF Arnold.) is one of the most economically and ecologically important tree species in Turkey. In this context, reliable and accurate information about the current status, growth and yield characteristics of these forests is ...
Onur Alkan, Ramazan Ozçelik
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Revista Árvore, 2018 In this study, it is aimed that the dynamic site index models were developed for Crimean Pine stands in Sarikaya-Cankiri forests located in middle northern Turkey. The data for this study are 153 sample trees obtained from the Crimean Pine stands.
Ugur Akbas, Muammer SENYURT
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