Study On Sustainable Land Use In Beijing-Tianjin-Hebei Region Based On Ecological Footprint Theory

Land,which is the most important material basis for the survival and development of human society,is also the fundamental source of human wealth creation.All the economic activities of human production and life are closely related to the land,which is the direct embodiment of the interaction between human activities and natural systems.The exploitation and utilization of the land to some extent reflects the level of economic and social development in the region.As the conflict between human and land intensifies and the idea of sustainable development widely spreads,people begin to focus on the sustainability of land use.However,how to comprehensively evaluate the sustainable utilization status of an area has been the emphasis and difficulty in this field.By comparing and analyzing the various evaluation methods in the theoretical field,we chose the ecological footprint method based on the natural biological quantity study to analyze and evaluate the sustainable utilization of land in the Beijing-Tianjin-Hebei region.In this paper,the research on the sustainable use of land and ecological footprint at home and abroad is reviewed.The theories of land sustainable,sustainable development and environmental carrying capacity are expounded.The basic concepts of ecological footprint theory and ecological footprint model are introduced in detail.At the same time,this paper introduces and analyzes the background of the natural environment,the socio-economic situation and the land use profile in the Beijing-Tianjin-Hebei region.Based on the above analysis,the ecological footprint model was used to calculate the land ecological footprint of the Beijing-Tianjin-Hebei region from 2006 to 2015,and the dynamic comparative analysis of the horizontal and vertical aspects.The results of the study shows that the per capita land ecological footprint of the region increased from 3.199 hectares in 2006 to 3.571 hectares in 2015,an increase of 11.6%;While the per capita land ecological carrying capacity decreased from 0.358 hectares to 0.312 hectares during the same period,a decrease of 12.81%;The land ecological deficit is increasing year by year,and the sustainable land use pattern of the Beijing-Tianjin-Hebei area is not sustainable.Judging from the comparison of the internal three places of the Beijing-Tianjin-Hebei region,the unsustainable use of land in Beijing has gradually improved,while the unsustainable use of land in Tianjin and Hebei has become increasingly serious.Three provinces and cities in the same region have emerged different characteristics.According to the above analysis results,the overall land planning in the sustainable use of land in the Beijing-Tianjin-Hebei region is irrational,the utilization mode is extensively used,the utilization efficiency is low,and the soil pollution is serious.In order to improve the land ecological deficit and maintain the stability of the sustainable land use system,at the macro level,the following policy recommendations are proposed:Strictly control population growth;strengthen land planning and management,improve the land supply and demand mechanism;improve laws and policies related to land use;and strengthen land ecological environment construction.At the same time,based on the actual conditions of the six major types of bio-productive land,some suggestions for improving the ecological demand for land and increasing the ecological carrying capacity of the land are proposed.They are:establishing a long-term effective cultivated land protection mechanism;strengthening the intensive use of construction land;reducing land energy consumption;scientifically allocating forestland functions;rationally planning the use of pastureland;and maintaining the existing water area.