对生态工程中品质匹配的探讨

Approach to Quality Matching on Ecological Engineering

本文引用信息熵的概念来表示能量—物质流的品质,以揭示人工系统模拟自然系统的本质。分析表明任何生产过程都难以避免能量品质的耗散;简单的生产系统要实现完全的物质循环利用是困难的,物质的循环利用必须以付出额外的能量为代价;就单一生产体系而言,难以完全杜绝其向环境的排废。因此,人工系统对自然系统的模拟实质应是物质—能量流的品质间的良好耦合,而不是数量上的平衡,也就是要从有限能流中最大可能地汲取信息量。只有这样,才能使生态工程真正实现经济效益和环境效益的统一。

Using concept of information entropy to express quality of energy-mass stream, to announce nature of artificial system simulating natural system is the subject of this paper. Analysis shows that no production procedure can avoid dissipation of energy quality; it is difficult for simple production system to realize mass circulation completely and it is necessary to pay the price of extra energy ; for single production system, it is difficult to eliminate exhaust. Hence, essence of artificial system simulating natural system should be a fine coupling between mass and energy flows, not quantitative equilibrium, that is, should be to draw the maximum possible information from limited energy flows.