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该文对山东省耕地资源的最新利用状况进行分析,阐述了其基本特点,指出就农业大省而言耕地存在的主要问题,并从可持续发展的角度提......
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秦皇岛市地处严重水的华北地区，其水资源开发利用及其引起的生态环境变化是关系到该市社会经济可持续发展的关键问题。本文全面分析......
