| In the context of the new urbanization and rural revitalization strategy,the mode of national space development has also been changed from the production space at the beginning to the“Production-Living-Ecological”(Subsequent use of"P-L-E"instead)space to coordinate,in order to solve the problems caused by too much emphasis on economic development and neglect of the ecological environment in the early years.Land and space chaos,environmental damage and other issues to promote regional economic and ecological sustainable development.This article takes Hengfeng County,Jiangxi Province as an example,and uses the combination of object-oriented and visual interpretation of eCognition software to obtain land use data for the five periods of 2000,2005,2010,2015,and 2018.Based on the functional positioning and classification system of the“P-L-E”space where woodland resources dominate the area,the“P-L-E”spatial distribution map of Hengfeng County is obtained.With the help of ArcGIS software,the"three-life"spatial distribution map is analyzed from three aspects:dynamics,transfer matrix,and gravity center migration The spatial evolution characteristics of the“Production-Living-Ecological”space were evaluated by using a multi-factor comprehensive evaluation method to evaluate the suitability of the“P-L-E”space in Hengfeng County.Based on the evaluation results,a plan to optimize the“P-L-E”space was proposed.The main findings are as follows:(1)The characteristics of the spatial evolution of the“P-L-E”in Hengfeng County are analyzed.In 2000,2005,2010,2015,and 2018,the ecological space area in Hengfeng County has always accounted for more than 60%.For example,the production space ratio has increased from 23.63%in 2000 to 24.80%in 2018,and living space has increased from 4.29%.To 6.37%,ecological space fell from 72.08%to 68.82%;The comprehensive dynamic degree of Hengfeng County has been relatively large,indicating that the"three-generation"space has changed greatly during the study period,among which the industrial production space,urban and rural living space and grassland ecological space are the top three in a single dynamic degree change;The transfer-in areas of space and living space are both greater than the transfer-out area,and the ecological space is opposite;the center of gravity of the“P-L-E”space has shifted to varying degrees during the study period,and the center of production space is mainly concentrated in Cenyang Town and Longmen During the period between the borders and the continuous eastward movement,the center of gravity of the living space showed a tendency to move to the south-central area during the study period,and the center of ecological gravity moved to the northwest during the study period.(2)The spatial suitability of the“P-L-E”in Hengfeng County was evaluated.Hengfeng County has the least suitable proportion of production space suitability.The more suitable areas and above are mainly distributed in the lower towns in the middle,such as Cen-yang and Long-men-fan.The distribution of the suitability of living space is mainly centered in formed towns and along the main roads,and eventually forms a large middle The pattern of the group and the two groups in the north;the ecological space suitability is different from the production and living space,and it forms an obvious block structure,especially in the northern area,which is more suitable and above,and the ratio of the most suitable area to the more suitable area exceeds 60%.(3)An optimization plan for the“P-L-E”space in Hengfeng County is proposed.Cross-analysis of the“P-L-E”space and suitability evaluation in Hengfeng County in2018 found that most of the suitability of the current status of the“Production-Living-Ecological”space falls in the more suitable and the most suitable areas,but the production space has 170.56 hm~2,living The space is 50.93 hm~2,and the ecological space is 3169.23 hm~2.In view of this,in the future,Hengfeng County will balance the relationship between ecological space development and ecological protection under the premise of strictly maintaining the ecological protection red line.In addition to adjusting production conditions to local conditions,production space will need to improve production methods and production efficiency.On the one hand,living space will optimize new urbanization.Construction,increase land reclamation,on the other hand,appropriately control the scale and optimize the spatial layout.The production,living and ecological space should be coordinated together,and measures should be strengthened to promote the coordinated development of the"P-L-E"space in Hengfeng County.This paper explores the characteristics of the“P-L-E”space in Hengfeng County from the delineation to the spatiotemporal space,and proposes an optimization plan for the problems of its current situation.The research results can provide a theoretical reference for the coordinated development of the“P-L-E”space in Hengfeng County.Promote the sustainable use of land resources. |
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