Study On Optimal Allocation Of Resources Based On Land Carrying Capacity

The Wenchuan earthquake caused many secondary disasters such as landslides,collapses and mudslides,which caused a series of damages and impacts on the local ecological environment and land carrying capacity.This potential impact relationship may last for several years or even longer.How the relevant government departments can effectively allocate limited land resources,so that the ecological environment and land carrying capacity in the earthquake-stricken areas can be quickly restored and improved,and the limited land resources can exert tremendous value.This is a real problem that needs urgently to be solved.Therefore,it is of great practical significance to study the optimal allocation of resources to the affected areas.This paper takes Mianzhu City as a research object,and combines the CFCCP model and the Interval Linear Programming(ILP)model to establish a fuzzy-interval linear programming(FILP)model for risk based on BWC algorithm.The explicit interval linear programming(REILP)method has been improved.Compared with the traditional linear programming problem,the interval parameters and fuzzy variables are introduced into the objective function and constraint conditions respectively,and many uncertain factors are considered more completely.Based on this,using this model(FILP)to conduct an in-depth study of the optimal allocation of land resources in Mianzhu City,and to obtain risk-benefit plans for land resources allocation in 2020 and 2025 under different levels of willingness and confidence levels,providing scientific and effective government departments.The decision-making basis and reference value.Practice shows that the fuzzy-interval linear programming(FILP)model can optimize the allocation of land resources in Mianzhu City with a given level of confidence and willingness.At the same time,applying the fuzzy-interval linear programming model to the optimal allocation of land resources has a certain degree of rationality and feasibility.The main conclusions are as follows:(1)Based on the combination of fuzzy theory and interval planning theory,a fuzzy-interval linear programming(FILP)model was established according to the actual situation in Mianzhu City,and the improved risk explicit interval linear programming(REILP)method was used to calculate.(2)The experiment shows that the risk value increases as the willingness level increases.Therefore,choose the configuration scheme when the risk coefficient is small and the confidence is high(that is,the willingness level is 0.2,and the confidence level is 0.8).(3)The forecast results show that the area of land actually available in 2020 accounts for 95.85% of the total land area of Mianzhu City.There are five types of land resources that should be allocated in mountainous areas: cultivated land,forest land,construction land,water areas,and other land use.The ratios were 18.97%,21.68%,3.49%,6.02%,and 1.24% respectively;only three types of land resources were needed along the mountainous areas: forest land,construction land,and other land use,accounting for 6.49% and 1.43% respectively.And 0.93%;Pingba District,four types of land resources need to be configured,namely: cultivated land,construction land,water areas and other land use,accounting for 18.21%,6.53%,9.68%,and 1.18% respectively.