| This research aims at the ecological space delineation of the territorial and spatial planning,constructs a research framework,based on the ecological background conditions of Zunhua City,and superimposes a series of indicators to make corrections,to identify the difference limiting factors and advantageous areas of the territorial ecological space,combined with Zunhua The city’s current ecological projects and policies delineate the territorial ecological space area and identify the ecological source,use the least resistance model to construct ecological corridors,and build an ecological security pattern by relying on the ecological barrier of the earth and soil in the study area.The main conclusions are as follows:(1)Through the evaluation of the importance of ecosystem service functions and ecological sensitivity in the study area,it can be seen that areas with high levels of biodiversity are mainly distributed in the Great Wall Hunting Ground-Jiufeng Mountain-Chanlin Temple Ancient Ginkgo Landscape Garden,Shangguan Lake-Wanfo Garden-Eastern Tomb of Qing Dynasty,Wolong Mountain-Nanshan Changle Valley and the banks of Lihe River;areas with high water conservation are mainly concentrated in Jiufeng Mountain,Shangguan Lake,Qingdong Tomb,Jinfeng Lake and Longmen Lake;areas with high soil and water conservation levels are mainly Scattered in low mountains and hilly areas;higher levels of soil erosion sensitivity are in hills and valleys with low vegetation,and are distributed in blocks.(2)The land area with a high ecological protection level is 234.53 km2,accounting for 15.99%of the total area.It is mainly distributed in the hilly areas in the south,northeast and northwest part of the hilly area;on both sides of the main stream of the Li River and the Shahe River,and part of the tributaries.The level of ecological protection in the plains is low.The area of priority areas for ecological protection in the study area according to the ecological protection level is 261.28 km2,accounting for 17.26% of the total area of the study area,including 2 national nature reserves,3centralized drinking water sources,and 4 water conservation lakes.And mainly distributed in the northeast and Nanshan area.The region should strengthen management and control,reduce human activities,and promote the implementation and advancement of ecological protection measures.(3)According to the evaluation results of the importance of ecological protection in the study area,15 ecological sources were selected based on the size of the patch,the richness of animal and plant species,the geograp Hical pattern and the red line of ecological protection,with a total area of 279.62 km2,accounting for the total area of the study area 18.48% of the total are mainly distributed in the southeast,northeast and northwest of the study area.(4)Constructing resistance surfaces Use the least resistance model to construct 32 ecological corridors with a total length of 285.41 km.The potential ecological corridors avoid the main urban areas and villages with the highest intensity of human activities,mountains with high undulations and the edges of cultivated land.In areas with better ecosystem services such as woodland,grassland,gardens,etc.,it presents a net-like distribution,which effectively improves the connectivity between ecological sources(5)On the basis of the 3 natural ecological barriers of Beishan,Zhongdaoshan and Nanshan,combined with 15 ecological sources and 32 ecological corridors,an ecological security pattern of "3 screens,32 corridors,and 15 areas" has been constructed.The construction of the security pattern adjusts the regional ecological space layout and structure,promotes the establishment of an ecological security system,and facilitates the flow of energy and material between organisms in the ecological region,coordinated protection,and unified supervision. |
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