Based on GIS and System Theory Researching Location in The Complex Terrain

• 1、Trafficcollege，FujianAgricultureandForestryUniversity

Abstract：This paper analyzes the problem of facilities location in complex terrain such as much place not suitab- le for facilities construction, surface ups and downs, the charges of the location closely related totopog- raphy, geology complex and traffic unconvenient; which lead to the factors involved in the location are closely related to environment and terrain, but the general the mathematical model of location can not well take into account the terrain factor. GIS has the powerful spatial analysis function,so researches t- he general method of locating in the complex terrain using GIS,to introduct the system theory,seing the facility location as a system, the establishment and operation of the system need to exchange energy w- ith the outside world;energy exchange charge is the factors to be taken into account in facility location. The general approach of location is to use the overlay analysis of GIS to determine the permitted zones of facilities location, and then analyze the terrain factors causing different cost in energy input and out- put, establish the energy input and output, through the cost layer establish the charge layer, finally, ove- rlay all the layers to comprehensively analyze facilities location.problems ,researches the location mathods based on GIS and introduces the system theory to make the problem general.

Keywords： GIS System Theory Location Complex Terrain