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991.
在介绍水市场相关概念并对国内外关于水市场的研究进展进行简述的基础上,分析了水市场的制度设计特点:农业水权的优先分配;市场结构的紧密构筑;取水权和排污权的合理定价;取水总量与排污总量的科学制定。揭示了流域水市场建设对我国农业生产的现实意义:保障农业用水安全;有效缓解农业旱情;节约农业生产用水;提高农产品质量。 相似文献
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以2008年在元阳哈尼梯田旅游区进行的田野调查为基础,分析归纳了元阳哈尼梯田旅游游客的人口学、行为学、社会学和心理学特征,并在该基础上提出了元阳哈尼梯田旅游开发策略。 相似文献
993.
Products containing microorganisms as a tool in integrated pest management and the rules of their market placement in the European Union
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Ewa Matyjaszczyk 《Pest management science》2015,71(9):1201-1206
Products containing microorganisms (bacteria, fungi and viruses) can be used in plant production as an intervention as well as a prevention method for pest control. Their utilisation is strictly in line with the principles of integrated pest management, provided that they are effective and safe. The rules of registration of microorganisms for crop production in the European Union differ, depending on whether they are placed on the market as plant protection products or not. For over 20 years, uniform rules for registration of plant protection products have been in force. Currently, 36 microorganisms marked up to the strain are approved for use in pest control in the Community. The decision concerning market placement of plant protection products containing approved microorganisms is issued for each member state separately. The approaches to market placement of other products with microorganisms differ within the EU, ranging from a complete lack of requirements to long and costly registration procedures. © 2015 Society of Chemical Industry 相似文献
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在介绍民营银行特点的基础上,探讨金融市场化背景下我国发展民营银行的重要意义。根据我国民营银行发展现状,论述其发展过程中应重点防范的危险,为民营银行的规范经营和健康发展提供借鉴。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(1-4):395-406
Electricity prices in Sweden will most probably double, or more, during the next 10 to 15 years as a result of the decision to discontinue nuclear power production. This will substantially change the comparative advantage of all forest‐based product industries, some to the worse, some to the better. Roundwood prices and fellings will be affected and possibly the competitive position of wood‐based energy production. This paper estimates various types of effects with a long run pulpwood market model. The effects on electricity intensive production (CTMP, newsprint, etc.) may be drastic. However, the fall in total industrial consumption and price of pulpwood will be limited. The reduction in price is not sufficient to make pulpwood economically attractive as fuel. Own‐price elasticities of electricity demand are greater than reported elsewhere. 相似文献
999.
《Scandinavian Journal of Forest Research》2012,27(4):382-389
This paper presents a short‐term econometric model for the sawlog and pulpwood markets in Finland. More specifically, the effects of structural changes in the market on the success of short‐term market modelling are investigated. Wood prices and quantities traded are stationary. Therefore, valid statistical inference using the levels of these variables is possible. Pulpwood prices were found to be directly proportional to sawlog prices during the study period, and the cross‐price effects were not statistically significant. The results indicated that the price sensitivity of wood supply in Finland increased during the 1980s and early 1990s. Nationwide collective price agreements were found to have increased the level of pulpwood supply and demand from private forests, but to have had no effect on either supply of or demand for sawlogs. Due to a structural change in the 1970s, the models estimated for the whole period cannot be used for short‐term forecasting in the 1990s. Higher‐than‐annual frequency data should be used in developing accurate short‐term forecasting models. 相似文献
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