Research on classification and identification of land intensive use in plain city:Evaluation of 21 cities and counties in Jianghan Plain based on entropy weight method
The evaluation of intensive land use is an important tool to evaluate the degree of land intensive use.It is of great significance for realizing the sustainable use of land resources and promoting the coordinated development of economy,ecology and society.In recent years,research on the evaluation of intensive urban land use at home and abroad has mainly focused on urban agglomerations,provinces,cities and other scales in terms of research scale,and mainly involves developed coastal cities or provinces with strong economic foundations.There is a lack of research on cities at different administrative levels.A comparative study of intensive land use.In fact,under China's land development rights allocation framework,which centers on the level-by-level allocation of land use indicators,cities at different administrative levels enjoy unequal land development rights.Specifically,cities with higher administrative levels have a stronger say in the allocation of land use indicators,and can obtain relatively more indicators for new urban construction land and fewer indicators for cultivated land protection tasks.However,it remains to be revealed what the differences are in the degree of intensive land use in cities at different administrative levels,and whether high-level cities with more say in urban construction land indicators show higher degrees of intensive land use.Therefore,this article selects Xiaogan City,Jingzhou City,Jingmen City,Tianmen City,Xiantao City,and Qianjiang City in the Jianghan Plain of Hubei Province as the research area.Xiaogan City,Jingzhou City,and Jingmen City are prefecture-level cities,and Tianmen City,Xiantao City,Qianjiang City is a city under the direct administration of the province.A total of six cities,nine county-level cities and the central urban areas of six county towns are used as research samples.From a macro scale,the classification,identification and horizontal comparison of intensive urban land use are studied,and through remote sensing analysis,use the geographical information data analysis method to identify construction land areas in batches to accurately extract the research scope.On this basis,12 indicators(area average)were selected from three aspects:land input intensity,land utilization degree,and land output benefit.Investment in fixed assets,general public budget expenditures per area,urban employees per area,urban construction land area per capita,population density,road network density,output value of secondary and tertiary industries per area,fiscal revenue per area,disposable income per capita of urban residents,The average total retail sales of consumer goods,green coverage rate,and sewage treatment rate)were used to construct an evaluation index system for intensive urban land use in the Jianghan Plain area,and the entropy weight method and K-means cluster analysis method were used to classify the degree of intensive land use in the above-mentioned central urban areas.The research aims to reveal the differentiation of intensive land use in central urban areas under different administrative levels such as municipal cities,provincial cities,and county-level cities,and provide support for cities to promote high-quality development according to local conditions.The evaluation results show:1)the urban intensive evaluation results of municipal-level urban districts are two moderate utilization and one low utilization;2)the urban intensive evaluation results of provincial-level cities and districts are all low utilization;3)the urban intensive evaluation results of the first-level urban area are four intensive utilization,five moderate utilization,and six low utilization.That is,the central urban areas of cities(prefecture-level cities,provincial-level cities)with higher administrative levels in the Jianghan Plain area have lower intensive land utilization;while the central urban areas(counties)of cities with lower administrative levels have less intensive land utilization.To this end,it is recommended that central urban areas of municipal-level cities need to further strengthen the intensive and economical use of land,strictly control urban spatial growth boundaries,optimize urban spatial structure,clarify the focus of urban development,improve the sharing and aggregation effect of various facilities,and avoid blind spread of urban space.For cities with high land output benefits and low land input intensity,the land input intensity should be appropriately increased to make the three types of index structures more reasonable.For example,the government wants to increase land investment strengthen efforts to increase capital investment in infrastructure,public facilities and fixed assets;for cities with high land investment intensity and low land utilization,they should increase their urban population density,road network density,etc.,appropriately guide population distribution through policies,and increase investment in infrastructure construction funds.
construction landevaluation of economical and intensive useentropy weight methodcity center
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