世界资源协会关注环境问题，诸如气候变化、海岸和海洋生态系统，以及在商业永续途径的经济。
The World Resources Institute focuses on environmental issues such as climate change, costal and Marine ecosystems, and the economics of a sustainable approach to business.
新古典经济学家大多相信，人造资本是自然资本的优良替代品，因此提倡维持两者总和的不变，这种方式称为「弱永续」。
Most neoclassical economists believe that man-made capital is a good substitute for natural capital and therefore advocate maintaining the sum of the two, an approach called weak sustainability.
异龄林经营决策是一个涉及到森林的经济效益和永续利用等多个目标的决策问题。
In this paper, the problem of uneven-aged forest management decision making is considered as a problem of multi-objective decision making.
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