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

Abstract

Since the ecological environment of southern and northern mountains in Lanzhou city, which is vulnerable and fragile, can’t meet the demands of urban landscaping naturally, it is required to enhance construction of ecological environment artificially. In allusion to the complication of decision support made in ecological environment construction, this paper propose a decision support mode for ecological environment construction which is comprised of decision support system and expert’s knowledge. Firstly, via carrying out the decision support system, a water conservancy scheme that contains two parts for southern and northern mountains of Lanzhou city is presented as below: 1. Collecting rainwater together used for environmental protection in the area where annual average rainfall exceeds in 400 mm. 2.Irrigating supplementally in the area where annual average rainfall below 400 mm (capacity of irrigation water equals to precipitation of 200 mm). Furthermore, by employing expert’s knowledge, a planning map of ecological environment construction for southern and northern mountains in Lanzhou city is demonstrated to assist decision makers.