加州大学戴维斯分校环境科学与政策系教授黑斯廷斯，是世界上利用数学模型(方程组)来理解自然系统的顶级专家之一。

Hastings, a professor in the UC Davis Department of Environmental Science and Policy, is one of the world's top experts in using mathematical models (sets of equations) to understand natural systems.

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对资源与环境科学计价并制定合理的价格政策，是建立经济补偿机制的基础。

It is the base of economic compensatory system establishment to scientifically valuate the resource and environment and to institute a reasonable price policy.

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