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The Depletion of Natural Resources - Essay Example

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This research paper discusses the results of the study conducted in 2000 on the occurrence of pioneer and climax trees under increased disturbance that had started 20 years back due to logging and silviculture refinement. The density of palms and lianas were also recorded…
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The Depletion of Natural Resources
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Download file to see previous pages The density of palms and lianas were also recorded as they were observed to have different behavior than that of the dicotyledonous trees.
The study was conducted under the original site of 78/5 experiment that was conducted in 1978 at Tonka research site in Suriname that is located within the Kabo creek, comprising of rain forest area. The region had around 197 species with 37 of them having great commercial value. In 1978, three levels of exploitation and three levels of silviculture refinements were tested and replicated three times. Virgin forest plots or VFPs were also set up in three replications using different compartments. The replications were carried out in nine compartments comprising of 1 ha assessment plot which was further divided into ten subplots. The exploitation levels were coded as E14, E23, and E46 where logging took place. E46 saw excessive logging which was considered non-acceptable. Silviculture levels were coded as S0, S18, and S14 where unwanted trees. In the heavy refinement area, cutting off unwanted trees was accompanied by climber cutting and poison girdling of non-commercial trees.
The current study took a small part of the original experimental area comprising of three compartments per replication along with 3 VFP compartments, totaling 60 subplots. The density of 8 selected tree species studied on the basis of 20% Random sampling of 100 plots. Species were selected for their adaptability to sunlight and shade. Vegetation layer of 3-10 m has opted because they were bested suited as test subjects. Using various statistical and non-statistical measurements like forest class, ANOVA, t, and chi-square test, Kruskal-Wallis and Wilcoxon signal tests were used to test the hypothesis. Mortality was higher in heavy exploitation and treatment region. Climax trees are not much-affected with treatments. ...Download file to see next pagesRead More
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