关键词: 土地利用, 最优结构, 优化模式, 西峡县

Abstract: On the basis of analysing the state of the landuse in Xixia county in 1985, in this paper. We applied the method of optimization models, and developed the land use optimazation model, including 9 decision variables and their coefficients and 12 constrants, for the whole county, and further, three sub-models representing hilly areas, near mountainous areas and remote mountainous areas respectively, and pointed out the goals set for agricultural output value in 1990 and their strategic measures to achieve. The computed results of the models have shown that the agricultural structure of Xixia county in 1990 will change greatly in that values of the forestry-antmal husbandry-fishery will exceed that of the crop, the land resources in this county will be more rationally used.In this paper, we expounded the principle and methods developing land use optimization models in mountainous countyes, and suggested that optimization model be a comprehensive and quantitative approach to rationally planning land resources. Using this method, we can make quantitative synthesis on the basis of analysis, and express in its concise mathematical models the complex systems of land use, and analog the behaviour of the systems in modern computer techeniques, and seek the optimum project on the conditions of restraints and objective function optimization, and thus make the goal of both economic and ecologic benefits optimized.

Key words: land use: optimale structure, optimization model, Xixia county