Evaluation Of Geological Environment Carrying Capacity In Meishan City Based On Intuitionistic Fuzzy Of Multi-source Data

The 18 th National Congress of the Communist Party of China has explicitly proposed the development of ecological civilization,and the resources and environment are the basic conditions and hard constraints for the sustainable development of ecological civilization.It is also an important guarantee for the sustainable development of the regional society.Its carrying capacity directly affects the regional social economy.development of.It is of great practical significance to carry out regional geological environment carrying capacity assessment to improve the ecological environment,protect the ecological environment,and promote regional sustainable development in the region.This article first briefly summarizes the research status of geological environmental carrying capacity at home and abroad,and summarizes the connotation and characteristics of geological environmental carrying capacity.At the same time,in combination with field investigations in the research area,the terrain fluctuations,topography,engineering geological rock groups,and active fault distances are selected.,Karst development degree,annual average rainfall,peak acceleration of ground motion,land use type and other evaluation indicators;secondly,according to the type of data such as interval type,linguistic variable,and precise value in the evaluation of the carrying capacity of the geological environment,the index data is calculated using intuitionistic fuzzy numbers Unifiedly converted to intuitionistic fuzzy numbers and established a decision matrix,a geological environment carrying capacity evaluation model based on intuitionistic fuzzy TOPSIS was constructed;finally,the model was applied to the evaluation of geological environment carrying capacity in Meishan,and GIS technology was used to carry out the evaluation of the evaluation area.Spatial analysis,the evaluation results are in good agreement with the geological environment of Meishan City.Through the above studies,this paper has achieved the following results:(1)Establish an evaluation index system of geological environment carrying capacity in Meishan City.According to the unique topography and geomorphology of Meishan City,the evaluation of the geological environment carrying capacity of this area is divided into 33 units,so as to improve the evaluation index system of the geological environment carrying capacity of the area.The index factors in the index system of this paper mainly include 8 sources including basic data such as topographic fluctuations,topography and geomorphology,engineering geological rock formations,active fault distance,karst development degree,annual average rainfall,ground acceleration peak acceleration,land use types,etc.Indicator factor.(2)An evaluation model of geological environment carrying capacity in Meishan City based on intuitionistic fuzzy entropy was constructed.The intuitionistic fuzzy numbers are used to uniformly convert the precise values,interval values,and linguistic variables in the indicator values into intuitionistic fuzzy numbers,combined with the principle of entropy,to calculate the objective weights of each indicator;at the same time,combined with the opinions of experts during the survey to obtain each The weight of the index;and then a geological environment assessment model based on intuitionistic fuzzy TOPSIS was constructed.(3)The evaluation model was applied to the geological environmental capacity of Meishan City,and five levels of high,high,medium,poor,and poor geological environmental carrying capacity were divided into Meishan City.The proportion of natural units with high carrying capacity was 17.27%,mainly located in the central and central and western regions;the proportion of natural units with high bearing capacity is 14.07%,mainly in the central and north central regions;natural units with medium carrying capacity are 31.70%,mainly in the west and southeast Natural units with poor bearing capacity accounted for 27.51%,mainly located in the south,southwest,and southeast;Natural units with poor bearing capacity accounted for 9.45%,mainly located in the southwestern Emeishan-Wawushan tourist circle And the northwest region.