| Environmentally sound timber extracting techniques for small tree harvesting |
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| 作者姓名： | 王立海 |
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| 作者单位： | Northeast Forestry University Harbin 150040，P. R. China |
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| 基金项目： | Chinese National Research Funding for Young Scientist and Engineering Research Unit, USDA Forest Service. |
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| 摘 要： | Forestcontractors,loggersandengineershavebeenpayingahighattentiontotimberextractionoperationssince1990's.Sincetimber-extractingoperationproducesthehighestproportionofoperationcosts,largestareadisturbedandmostresidualstandsdamagedamongalloperationsofsmalltreeharvesting,manytechniquesweredevelopedtomeettherequirementsoftimberextractioninsmalltreeharvesting.Animalskidding13Animalskidding,oneoftimberextractionmethods,usessomespecialdevicessuchassledgesandcarriagesasshowninFig.1toreducetheresistanc…
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| 收稿时间： | 10 August 2000 |
Environmentally sound timber extracting techniques for small tree harvesting |
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| Wang Li-hai.Environmentally sound timber extracting techniques for small tree harvesting[J].Journal of Forestry Research,2000,11(4):269-272. |
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| Authors: | Wang Li-hai |
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| Institution: | (1) Northeast Forestry University, 150040 Harbin, P. R. China |
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| Abstract: | Due to large area disturbed and great deal of energy cost during skidding operations, introducing or applying the appropriate techniques of timber extracting could significantly reduce the impact of timber extraction operations to forest environment while pursuing the reasonable operation costs. Four environmentally sound timber extraction techniques for small tree harvesting, particularly for thinning operations, were presented and introduced in this paper. The results of evaluation, test or practices indicated that these timber-extracting techniques are feasible, applicable and reasonable in small tree harvesting with a relatively low impact no environment and a moderate operation cost. |
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| Keywords: | Timber extracting Low environmental impact Small tree harvesting |
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