Research on hills ecological restoration planning under the background of territorial spatial planning: a case study of Nanning City

To explore a new path of systematic and large-scale hills ecological restoration under the background of territorial spatial planning, taking Nanning City as an example, the evaluation index system of hills ecosystem services was constructed, and hills ecological function evaluation was carried out. Then ecological function zoning of hills was divided, and the scheme of hills ecological restoration and promotion was formulated. So, a method of regional hills ecological restoration planning was established, based on background evaluation, function zoning, restoration and promotion. The results showed that the main hills in the study area accounted for about 37.26%, all of which were spatially contiguous and concentrated. The hills area was of 85% highly and moderately important area, all of which were the core area of hills ecological protection and restoration. The study area was divided into 8 types of hills ecological function zones, including hills ecological conservation area, water source protection area, ecological recreation coordination area, etc., which implemented corresponding control measures separately. Considering the needs of hills ecological protection and restoration and urban development, the hills ecological restoration and promotion scheme was formulated, from the aspects of fast-growing eucalyptus planting adjustment, hills community structure optimization, hills ecological recreation belt planning, and ecological restoration guidelines of damaged hills. The regional hills ecological restoration planning should coordinate ecological protection and restoration with urban development, integrate the protection, restoration and utilization of hill resources, and formulate plans by zoning and classification.