公共图书馆总经济价值包括使用价值和非使用价值，较难确认和量化。
The value of public library includes use value and non-use value, and is hard to identified and qualified.
借鉴资源环境经济学价值理念分析耕地价值内涵，从李嘉图地租理论出发，立足于耕地的特殊属性，提出实现耕地总经济价值评估的理论模型。
Using basic conception of resource and environmental economics and starting from Ricardo's land rent theory, we put forth a model to express the total economic value of farmland.
借鉴资源环境经济学价值理念分析耕地价值内涵，从李嘉图地租理论出发，立足于耕地的特殊属性，提出实现耕地总经济价值评估的理论模型。
Using basic conception of resource and environmental economics and starting from Ricardo's land rent theory, we put forth a model to express the total economic value of farmland.
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