نتایج جستجو برای: forest protection
تعداد نتایج: 282990 فیلتر نتایج به سال:
A bstract On 1 April 1963, the Department of Forest Fire Protection was established at Research Institute, which resulted from need to develop scientific and organisational bases for building a forest fire protection system that would effectively minimise growing hazard Polish forests. The began its activities by developing programme took into account both immediate but urgent needs forestry an...
The sustainable management of forest resources can only be achieved through a well-organized road network designed with the optimal spatial planning and the minimum environmental impacts. This paper describes the spatial layout mapping for the optimal forest road network and the environmental impacts evaluation that are caused to the natural environment based on the multicriteria evaluation (MC...
Dr. Engineers, ICONA (Instituto National para la Conservacion de la Naturaleza), Madrid, Spain. Abstract: Management of the fragile and greatly modified ecosystems in the Spanish Mediterranean climate is complex. Rainfall occurs in a few intensive storms on rough topography. Climax vegetation is sparse forest dominated by evergreen xerophilic species. The emphases of the National Institute for ...
S. W. Fraedrich, Southern Research Station, USDA Forest Service, Athens, GA 30602; T. C. Harrington, Department of Plant Pathology, Iowa State University, Ames 50011; R. J. Rabaglia, Forest Health Protection, USDA Forest Service, Arlington, VA 22209; M. D. Ulyshen, Southern Research Station, USDA Forest Service, Athens, GA 30602; A. E. Mayfield, III, Florida Department of Agriculture and Consum...
although host species generally face increased risk of brood parasitism in fragmented temperate landscapes and forest edge, little information exists to assess such risks in tropical birds. we studied how cuculidae species populations, host species population, and micro-environmental variables changed along an edge-to-interior gradient in peninsular malaysia. bird observations and environmental...
BACKGROUND At the 15th Conference of Parties of the UN Framework Convention on Climate Change, Copenhagen, 2009, harvested wood products were identified as an additional carbon pool. This modification eliminates inconsistencies in greenhouse gas reporting by recognizing the role of the forest and timber sector in the global carbon cycle. Any additional CO2-effects related to wood usage are not ...
The protection forest system for Taipei City, the capital of Taiwan, was established in 1907. The social and natural environment had changed drastically in the past few decades, however, the maps and cadastral records of these forests were not updated accordingly. In this study, digital surveying techniques were used to survey the boundaries, sample plots, and land use of the protection forests...
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