It holds that the production of commercial forest has positive externalities and its producers can't provide enough commercial forest truly required by the society under market failure.
该文认为商品林生产具有正的外部性，市场失灵使生产者将不能提供社会真正所需要的商品林数量。
There are some conflicts in mine-environment governance. The paper analyses detailedly economics root of mine-environment puzzle from externalities, Coase Theorem, production theory and game theory.
文章从矿山环境恢复治理存在的矛盾入手，从生产外部性、科斯定理、生产理论、博弈论四个方面，详细分析了矿山环境难以治理有其深刻的经济学根源。
But problem is that production brings not only private return to enterprise but also negative externalities to society, both of which affect the increase of social welfare.
但是，企业的生产不仅产生企业私人收益而且也可能带来外部不经济，这些都会影响社会福利的增长。
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