Simulation And Differential Management Of Land Use Change OF Major Function Oriented Zoning Under The Restraint Of Low Carbon

Since the reform and opening up,China's economy has developed rapidly.Today,China has become the world's largest carbon dioxide emitter.At the 2015 Paris Climate Conference,China promised that by 2030,China's carbon dioxide emissions per unit of GDP will decrease by 60%to 65%compared to 2005.As the most basic natural resource for human survival and development,land resources have become one of the important ways of China's macroeconomic policy regulation and natural resource allocation through the control of land resource use.The major function oriented zoning is to guide the economic and industrial layout,population distribution to adapt to the carrying capacity of resources and the environment,mitigate climate change,achieve resource conservation and environmental protection.Therefore,from the perspective of major function oriented zoning,coupling the low-carbon constraint target with the optimization of land use structure and the optimization of spatial layout is of great significance for exploring a reasonable land resource spatial planning and layout,optimizing land policies,and ultimately achieving carbon emission reduction targets.In this paper,from the perspective of major function oriented zoning,construct the county socio-economic database and carbon emission database in the Yangtze River Delta region,and use multi-objective optimization models to achieve optimal allocation of land use structures under low-carbon constraints in different major function oriented zoning,and then use the non-spatial module of the CLUE-S model to achieve low-carbon constraint.Reveals the effects of low-carbon economic development on the changes in land use structure and the spatial layout of different major function oriented zoning,and develops differentiated land use for energy conservation and emission reduction.The control strategy provides scientific basis.Based on the above studies,this article draws the following conclusions:(1)In terms of characteristics of land use change,the Optimization Development Zone is mainly arable land,forest land,and construction land.The total area of arable land and forest land is steadily decreasing,and the areas of grassland,waters and unused land have fluctuated.The area of construction land has increased significantly;Prioritized Development Zone are mainly arable land,forest land,and construction land.The area of arable land is steadily decreasing.The changes in forest land,grassland,waters,and unused land are relatively stable.The increase in the area of construction land is relatively small compared to the Optimization Development Zone.Land use is the main type of land used in the Agricultural Production Zone.The reduction in cultivated land area is limited.The change in forest land,grassland,waters and unused land is relatively stable,and the increase in construction land area is small.Cultivated land and forest land are the main types of land in Ecological Function Zone.The proportion of cultivated land and forest land area has been decreasing,and grassland,waters and unused land have increased slightly.It is worth noting that the construction land area has grown rapidly,mainly due to the conversion of cultivated land and forest land.(2)There are obvious differences in the spatial and temporal patterns of carbon emissions in different major function oriented zoning.The total carbon emissions are in descending order:Optimization Development Zones,Prioritized Development Zone,Agricultural Production Zone,and Ecological Function Zone;from 2005 to 2012,the total carbon emissions of each functional zone increased to varying degrees.Among them,the Optimization Development Zone increased by 60.51%,Prioritized Development Zone increased by 127.63%,the Agricultural Production Zone increased by 91.75%,and the Ecological Function Zone increased by 142.999%.Comparative analysis of different types of functional carbon emissions,most of the counties with agricultural carbon emissions of more than 100,000 tons are located in northern Jiangsu;counties with industrial carbon emissions of more than 5 million tons are concentrated in industrially developed cities,and they are spreading around The growth of carbon emissions in service industries in some Agricultural Production Zone and Ecological Function Zonehave increased significantly;counties with rural living carbon emissions of more than 100,000 tons are mostly distributed in Zhejiang Province;urban living carbon in southern Jiangsu and Hangzhou Bay areas Emissions are high;transport carbon emissions from cities along rivers,coasts,and important transportation nodes increase rapidly;similar to industrial carbon emissions,industrially developed cities also have higher carbon emissions from industrial processes.(3)Results of optimization of land use structure under low carbon constraints.For the Optimization Development Zone,the area of cultivated land decreased by 23.65%,the area of forest land changed little,the area ofgrassland,waters and unused land increased,and construction land increased by 39.36.ForPrioritized Development Zone,the area of arable land has decreased by 20.39%,the area of woodland,waters and unused land has changed little,and grassland and construction land have increased significantly;the area of arable land in Agricultural Production Zone has decreased by 3.65%,and the area of woodland The decrease was 17.07%,the grassland increased by 33.36%,and the increase of water areas,unused land and construction land was less than 20%.For Ecological Function Zone,the decline of cultivated land and forest land area was limited,and the increase of grassland,water area and unused land.The rate is below 10%,and the construction land has increased from 115,400 square hectares in 2015 to 210,403 square hectares.(4)Results of optimization of land use space under low carbon constraints.Compared with land use in 2015,simulated maps of land use change under low carbon constraints in 2030.The concentration of different land types in the Yangtze River Delta increased,and cultivated land showed a decreasing trend.For construction land,water area and unused land,the increase of construction land is obvious,and the degree of agglomeration is increasing,showing a trend of outward expansion around the central city.Grassland changes are not obvious,and some forest land is converted into water areas and unused land.