Research Of Comprehensive Environmental Carrying Capacity In Yilan

Since the reform and opening up,China’s rapid economic growth has brought about a series of problems such as shortage of resources,deterioration of environment and ecological damage.In order to seek the balance between economic development and environmental protection,people are trying to use environmental carrying capacity to describe the threshold of regional development.Then adjust the regional development planning to help the target regional realize sustainable development.At present,the research on comprehensive environmental carrying capacity is concentrated in the evaluation of large areas such as provinces and cities,and there are few studies concentrated on small areas such as districts and counties.Thus it is difficult to reflect the differences in different areas.Therefore,this study selected Yilan County as the research object and analyzed its comprehensive environmental carrying capacity.The framework of evaluation system was constructed on the basis of reading a large number of references and learning the development status and characteristics of Yilan County.The comprehensive environmental carrying capacity of Yilan County is the target layer in the framework of the evaluation system,the natural environmental carrying capacity,resource environmental carrying capacity as well as social and economic environmental carrying capacity are the criteria.Then adopt the frequency statistics and theoretical analysis to select 29 evaluation indexes for it.Next,screen and optimize the indicators through both qualitative analysis and quantitative analysis.Finally,19 indicators were screened to construct the final comprehensive environmental carrying capacity evaluation index system,and the evaluation criteria of each index were determined according to relevant documents and the advanced or average development level in the field.The AHP-entropy weight combination method is used to weight each index,and the comprehensive environmental carrying capacity is determined and analyzed according to the non-dimensionalization results and weights of each index.The GM(1.1)model is used to predict each evaluation index.Finally,analysis the development trend of evaluation index according to the prediction results,then put forward some development suggestions to improve the comprehensive environmental carrying capacity.The research results show that the comprehensive environmental carrying capacity level of Yilan is increasing from 0.69 in 2013 to 0.89 in 2017,which is increased by 29%.After the shutdown of the coal chemical high-tech enterprise industrial park,the comprehensive environmental carrying capacity is increased from 0.82 to 0.88,which is increased by 7.9%.The predication results show that the comprehensive environmental carrying capacity of Yilan increases from 0.72 in 2018 to 0.89 in 2022,which is increased by 24%.The analysis results show that the improvement of comprehensive environmental carrying capacity is mainly due to the improvement of natural environmental carrying capacity,but resource environmental carrying capacity and socio-economic carrying are in low-level,which limit the rapid development of the comprehensive environmental carrying capacity.The further analysis indicates that the main constraints are: the deficient of environmental pollution control,the high consumption of energy,the undeveloped economic situation,and the lack of high-tech industries and green industries.This paper adopts SWOT matrix to analyze the status quo and prediction results of Yilan’s comprehensive environmental carrying capacity.Then proposes corresponding development strategies,including: implementing various pollution prevention measures;strengthen infrastructure and public transportation construction,in-depth environmental carrying capacity research,optimize industrial structure,stem population loss,promote economic development,popularize environmental protection knowledge,encourage the supervision of the masses,encouraging talents introduction,strengthen environmental governance,implement environmental protection facilities,increase investment in environmental protection as well as science and technology;develop clean energy and improve comprehensive utilization of energy.