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“保护地球环境”MiniQuest
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作者 王继华 《信息技术教育》 2004年第9期64-65,共2页
这是反映母亲河珠江的一个Flash动画短片.这个动画短片给我们提出了什么问题呢?
关键词 Flash动画短片 “保护地球环境” 网络课程 小学 品德课
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“保护地球环境”MiniQuest教师手记
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作者 王继华 《信息技术教育》 2004年第9期66-66,共1页
MiniQuest与WebQuest相比,是更适合在课堂上操作的网络学习模式,但国内的实践案例很少,且为小学低年级设计的更是没有看到.小学二年级的思品课中有进行环境保护方面的教学内容,能否就这方面的内容进行一次MiniQuest的探索呢?
关键词 “保护地球环境” 小学 思品课 网络学习模式 课堂教学
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Phosphorus Biogeochemical Cycle Research in Mountainous Ecosystems 被引量:15
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作者 WU Yan-hong ZHOU Jun +4 位作者 YU Dong SUN Shou-qin LUO Ji BING Hai-jian SUN Hong-yang 《Journal of Mountain Science》 SCIE CSCD 2013年第1期43-53,共11页
Phosphorus(P),as a limiting nutrient,plays a crucial role in the mountainous ecosystem development.Its biogeochemical cycle in mountainous ecosystems determines the bioavailability and sustainable supply of P,and thus... Phosphorus(P),as a limiting nutrient,plays a crucial role in the mountainous ecosystem development.Its biogeochemical cycle in mountainous ecosystems determines the bioavailability and sustainable supply of P,and thus becomes a crucial process which needs to be fully understood and described for ecological and environmental conservation.However,most of research about P biogeochemical processes has been carried out in aquatic environment and agronomic field,but rare researches have been done in mountain ecosystem.In the present review,we summarize researches on P biogeochemical cycle concerning mountain ecosystem in recent decades,including rock weathering,the release,transformation and bioavailability of P,interactions between the P biological cycle and microbial and plant life,as well as the development of models.Based on the state of art,we propose the future work on this direction,including the integration of all these research,the development of a practical model to understand the P biogeochemical cycle and its bioavailability,and to provide a reference for ecological and environmental conservation of mountainous ecosystems and lowland aquatic systems. 展开更多
关键词 Phosphorus Biogeochemical cycle Weathering Microbe and plant Model Mountainous ecosystem
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Develop hydroenergy resources and protect earth environment
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作者 Lu Youmei 《Engineering Sciences》 EI 2009年第2期32-34,63,共4页
Energy is a driving force behind the progress of human civilization. Mainly depend on the current human society of non-renewable fossil energy sources, such as coal and oil, its increasing demand. Gradually reduce the... Energy is a driving force behind the progress of human civilization. Mainly depend on the current human society of non-renewable fossil energy sources, such as coal and oil, its increasing demand. Gradually reduce the reserves, the contradiction between supply and demand becoming increasingly prominent. With the process of human history has moved forward with the depletion of fossil energy will eventually be unable to sustainable use. The total hydropower resources are limited, but it is renewable, clean energy, its energy is infinite. Therefore, the full use of limited water resources and slow down the depletion of fossil energy process, is to improve and protect the earth’s ecology and environment, one of the most realistic measures. 展开更多
关键词 water resources fossil energy hydropower construction protect earth environment
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