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《湖南农业》 2001年第12期17-17,共1页
世界贸易组织(以下简称WTO)是世界上唯一处理国与国之间贸易规则的国际组织,是多边贸易体制的法律基础和组织的基础,其核心是WTO协议,它通过规定各国政府所应承担的主要契约义务,来规范各国国内贸易立法与规章的制定和实施。同时,它还... 世界贸易组织(以下简称WTO)是世界上唯一处理国与国之间贸易规则的国际组织,是多边贸易体制的法律基础和组织的基础,其核心是WTO协议,它通过规定各国政府所应承担的主要契约义务,来规范各国国内贸易立法与规章的制定和实施。同时,它还向各国提供一个场所,使它们通过集体辩论、谈判和裁决来发展贸易关系。 展开更多
关键词 森林造水 森林 “土壤吸粒” 土壤肥力 苹果 虫害防治 天然除草剂
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A Case Study on Environmental Evaluation and Planning for Range and Forest Management by Means of Geographic Information System (GIS) 被引量:1
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作者 M. Reyahi Khoram M. Karami Nour 《Journal of Agricultural Science and Technology》 2010年第6期57-62,共6页
The aim of this research is to identify the most suitable land for forestry, afforestation and rangeland management in Hamadan province. This research has been accomplished using Makhdoum's model. In this research 30... The aim of this research is to identify the most suitable land for forestry, afforestation and rangeland management in Hamadan province. This research has been accomplished using Makhdoum's model. In this research 30 digital data layers are used. The Geographic Information System (GIS) has been used as main tool and overlay method has been used to implement the mentioned model. The results of this research revealed that the extent of favorite areas for fifth grade forestry, favorite areas for fourth grade afforestation, and favorite areas for third grade and fourth grade range management in the studied area. Based on the results of this research, the studied area has limited potentials for forestry and afforestation activities. The obtained results of evaluation also showed that the rangelands of Hamadan province are extremely poor. Since the rangelands have a substantial role in preservation of soil and water, therefore it is necessary to take appropriate measures for better exploitation of rangelands. 展开更多
关键词 Afibrestation ENVIRONMENT evaluation FORESTRY rangeland.
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