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循环经济与和谐社会关系浅议——兼论循环经济中的“和谐”因素
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作者 张超展 沈学君 《江苏海洋大学学报(人文社会科学版)》 2011年第13期7-9,共3页
循环经济是实现和谐社会的重要途径,这里试图通过对循环经济与和谐社会内在联系的揭示,指导人们以环境友好的方式合理地利用自然资源和环境的容量,以实现经济活动的生态化转向,使人类更加和谐共生。
关键词 循环经济 和谐社会 生态化转化 和谐共生
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Variation in soil properties in a transformed ecosystem in Southwestern Nigeria
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作者 Ojo Abel Folorunso Kadeba Olatunji Kavode Joshua 《Journal of Agricultural Science and Technology》 2009年第12期30-35,共6页
Variation in soil properties as a result of the conversion of the tropical rainforest to a monospecific plantation of teak, tectona grandis, was examined in Akure forest reserve in Southwestern Nigeria. Comparison was... Variation in soil properties as a result of the conversion of the tropical rainforest to a monospecific plantation of teak, tectona grandis, was examined in Akure forest reserve in Southwestern Nigeria. Comparison was made in the active rooting zone of 50 cm soil depth. It was discovered that there were no significant differences in the physical properties except in the value of organic matter content at the top 10 cm layer but chemical properties such as the pH and organic carbon changed significantly at the top 10 cm layer. Differences in other chemical properties, such as the available P, exchangeable cations K, Ca and Mg, the exchangeable acidity and the cation exchange capacity were minor. This showed that no nutrient was limiting or was likely to be limiting in the soil for subsequent short rotation of plantation development. 展开更多
关键词 soil properties transformed ecosystem Southwestern Nigeria
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