Spatial And Temporal Evolution Of Land Use Transformation Of Ecological-production-living Spaces In Guangdong Province And Its Eco-environmental Effects

At present,China has entered the new normal of economic development,facing the actual needs of the "five in one" overall layout and the construction of "three-generation space" land.The land development method needs urgent transformation;the process of industrialization and urbanization is advancing rapidly.The land is constantly spreading,the ecological and environmental problems caused by land use are becoming more and more prominent,the spatial structure is unbalanced and the ecological environment is getting worse.The land-use transformation reveals the dynamic process of the transformation of the regional land-use function corresponding to the transformation of the economic and social development stage in a period of time.In this dynamic process,the functional transformation of land use has a positive and negative effect on the regional ecological environment,and affects the global ecological environment quality in a cumulative manner.Therefore,the analysis of land use transition and the changes in the ecological environment effect are conducive to the rational development and utilization of regional resources and ecological environmental protection,and then to achieve the goal of optimizing the spatial function of the national land;Construction is of guiding significance.In view of this,this paper takes Guangdong Province,which has a rapidly developing economy,as an example,using remote sensing interpretation data from 1995 to 2015 to identify the spatial distribution and quantity of “three life” land in Guangdong Province,with the help of land use dynamics,transfer matrix,Gini coefficient and Gravity transfer model and other methods are used to analyze the spatial and temporal evolution of land use in Guangdong Province from 1995 to 2015,and use geographic detectors,regional ecological environment indexes,and ecological contribution rate to explore the ecological environment of land use transformation on land use in Guangdong Province.Analysis of the impact of quality.The research shows that:(1)During the study period,Guangdong's agricultural production land and ecological land decreased significantly,and industrial production land and domestic land increased significantly;the industrial production land and urban residential land in the Pearl River Delta region squeezed the ecological space and agricultural production space,ecological land The land used for agricultural production has been greatly reduced;(2)The center of gravity of different land types in Guangdong Province has moved in the longitude and latitude directions,and the movement trend in the east-west direction is more significant,mainly in the northeast,northwest and southwest directions;cities and towns The Gini coefficient of living land and industrial production land has been maintained at a relatively high level,and the spatial distribution is extremely unbalanced,mainly concentrated in the Pearl River Delta region;(3)The land use recessive form index has a negative correlation with the ecological environment quality,and the ecological environment quality space The distribution is highly consistent with the spatial distribution of the land use recessive morphological index and the regional socio-economic pattern,to a certain extent,it shows that the economic development of Guangdong Province is at the expense of the ecological environment;(4)There are both ecological improvement and ecological deterioration in the regional ecological quality of Guangdong Province Two trends,and the ecological environment The trend of environmental improvement is slightly smaller than the trend of environmental degradation.In the past 20 years in Guangdong Province,ecological land has decreased,especially in forest land and grassland,and the impact on the quality of the ecological environment cannot be ignored.