Evaluation Of Land Use Status And Multi-scenario Simulation In Huadu District

With the sustained and rapid development of China's social economy,the process of urbanization has been rapidly promoted,which is accompanied by increasingly severe contradictions between human and land,which has become one of the important reasons restricting the comprehensive and sustainable development of cities in China.The 12 th Five-Year Plan clearly requires the division of main functional areas according to "priority development,key development,restriction and prohibition of development";the 13 th Five-Year Plan points out that the land policy system should be improved to adapt to regional development strategy,to match population urbanization and to coordinate with intensive economy,to strengthen differentiated land policies,and to promote the optimization of regional,urban and rural land distribution.? The process of urbanization in China is at a new stage.The new urbanization requires us to guide the rational expansion of urban land use,improve the efficiency of urban land use,study the mechanism and control effect of land policy,optimize the allocation of land resources,promote the rational layout of urban space,and realize the coordinated and sustainable development of the region.This paper uses econometric geographic model and landscape pattern index to analyze the present situation of land use in Huadu District of Guangzhou City,uses FLUS model verified by accuracy to simulate the spatial distribution of land use under three scenarios:benchmark scenario,cultivated land protection and ecological protection,and puts forward the land use pattern and industrial layout of Huadu District by analyzing the dynamic change of land use and combining the natural and social conditions of the region.Suggestions are made to provide references for realizing green and sustainable utilization of land resources and formulating land use or industrial layout planning in Huadu District in the future.The conclusions of this study are as follows:(1)The land use structure in Huadu District is highly diversified,low concentration,abundant land use combination types,complex spatial patterns of land patches,poor stability of main agricultural land and construction land;the index of land use degree in Huadu District is 218.47,and the degree of land use is generally affected by human economic and social activities.The fractal dimension of woodland,town,village and industrial and miningland is the closest to 1.5,the stability is the worst and the change is most prone,but the separation index of woodland is the smallest,and the distribution of land patches is the most concentrated.(2)The future trend of land use spatial distribution in Huadu District is the adjustment of the internal spatial structure of agricultural land and the expansion of urban land,while the forest land area shows a steady upward trend,which coincides with the adjustment of agricultural industrial structure and the idea of building an ecologically livable city at the present stage in Huadu District;the policy of arable land protection under the scenario of arable land protection can not eliminate urban land use.Expansion can encroach on the cultivated land around it,but measures can be taken to increase the quantity of cultivated land and ensure the safety of cultivated land in the area from three aspects: the adjustment of the internal structure of agricultural land,the integration of scattered rural settlements in suburban areas,land reclamation and the transformation of water surface or beach in pits and ponds;ecological environment protection measures can not only protect the ecological land from encroachment,but also act as the ecological barrier of the city and block the city.Unlimited expansion,adjust the spatial distribution of land use in the region.