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Forest management today has to meet a number of objectives. Planning of multi-functional forest road networks is one essential for meeting the aims of the sustainable forest concept. Road construction damages the natural environment unless it is carefully thought out. As forest engineers we have to consider the protection of nature when designing forest roads. With this aim in mind, a new network planning approach was developed for wood-harvesting. A geographical information system (GIS) was used to evaluate the data and planning process. The new forest road network plan for Catak Forest District constituted the addition of a new 16-road segment, total length 59.067 km, to the existing road network plan, for the purpose of wood-harvesting operations. Forest road density value was determined as 22.8 m/ha: the opening-up rate of the area was increased to 77.8% and the opening-up rate of the existing stand value was increased to 94.3% after close examination. 90.2% of roads were planned for the forest areas where there is likely to be minimal negative environmental impact.  相似文献   
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Women are responsible for procuring the food for their family in many places in the world. The usage of the non-timber forest products (NTFPs) reaches to the beginning of the humanity NTFPs are used for food and medicine especially in the developing countries as a whole. In this research, totally 611 questionnaires were conducted with women participants by polling face to face in 68 forest villages in the research area. The main reason for studying with women is that; the gathering activities are usually done by women in that area and they also knew the used parts and how to use the NTFPs. Results showed that about 14.4% of the women in the research area are gathering the plants for food (17 species and 2-8 kg annually) and 9.2% of the women are gathering the plants for medicinal purposes (16 species and 1-4 kg annually). These plants are usually used for additional medicinal treatments. 4 species are used for livestock treatment and 2 species in the hand weaving.  相似文献   
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Medically used plant species in Eastern Black Sea Region of Turkey was determined in this study. Totally 50 species within 24 families have been designated in 25 research points, using the face to face polling method with the herbs sellers and purchasers. 14 species of studied plants are endemic and pointed out as endangered species according to the IUCN list (The World Conservation Union). In which health problem the medicinal plants are used, their usage art, area and the used parts have been determined too. The research results show that 12.58% of the species are used in intestinal problems and 8.60% for diuretic. Evaluating from this point of view the region includes very rich species could be used in different health problems. The results shows that average annual income of the medically used plant selling companies is about 33,333$. Increasingly demands for the medically used plants have been raised the medically used plant companies about 60% in the last decade. The relevance of Ethnopharmacologically used plants is increasing in Turkey and in the World. Important is to meet the demand without endanger the rich plant species resources.  相似文献   
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