environmental externalities meaning in Chinese

环境风险
经济活动对环境的影响

This text carries on preliminary deduction and calculation on the measurement of forest environmental externality by means of the externality theory , and put out formulae as the price of forest environmental resources means marginal production cost and marginal use cost subtract from the international price of the forest products log
本文利用外部性理论对森林环境外部性的计量分析进行初步的演绎和推算，推出公式为森林环境资源价格森林资源产品原木的国际价格边际生产成本边际使用成本。