兰州南北两山生态环境建设决策支持模式初探

兰州南北两山生态环境脆弱,自然状态下无法达到城市发展的绿化要求,必须进行生态环境建设.针对生态环境建设的决策困境,提出构建“决策支持系统+专家知识”的决策支持模式.在详细阐述此决策支持模式的基础上,以兰州南北两山作为研究案例,建立了兰州南北两山生态环境建设决策支持系统,通过该系统的试验结果讨论,最终给出兰州南北两山生态环境建设的两项用水措施建议,即:①在多年平均降雨量大于400 mm的区域进行人工集雨；②在多年平均降雨量小于400 mm的区域进行人工灌溉(灌溉量相当于200 mm降雨).最后结合专家知识形成兰州南北两山生态环境建设规划图,供决策者参考.

A New Decision Support Model Applied to Ecological Environment Construction in the Southern and Northern Mountains of Lanzhou City

Artificially ecological environment construction is the necessary approach to greening Lanzhou City due to fragile natural environment. This paper proposed a decision support model which was comprised of "decision support system" and "expert's knowledge". Based on introduction of the decision support model, we developed a decision support system for ecological environment construction in the southern and northern mountains of Lanzhou City. Through discussing the experimental results of the decision support system, a water conservancy scheme for ecological environment construction in the southern and northern mountains of Lanzhou City was presented as below: (1) Collecting rainwater for environmental construction in the area where the average annual rainfall exceeds 400 mm; (2) Operating irrigation in the area where the average annual rainfall is below 400 mm, and the irrigation amount equals to 200 mm rainfall. Furthermore, a planning map for ecological environment construction in the southern and northern mountains of Lanzhou City is demonstrated to assist decision makers.