[Ecological Protection and Restoration of Beibu Gulf Urban Agglomeration in Guangxi Based on Ecological Security...

Scientifically promoting ecological protection and restoration is the core task and important guarantee for urban agglomerations to build an ecological security optimization pattern and promote the high-quality development of regional ecological construction. Taking the Beibu Gulf Urban Agglomeration in Guangxi as the object， focusing on the technical route of "ecological security pattern theory + sky-ground integrated monitoring technology，" through the integration and verification of monitoring data， the analysis of morphological spatial pattern， the correction of ecological source with the help of InVEST model， the calculation of ecological connectivity， and the analysis of ecological resistance surface， the extraction of ecological key elements by circuit theory， the accurate identification of key protection and ecological restoration areas in the study area， the construction and optimization of the ecological security pattern， and the analysis of ecological protection and restoration based on the driving factors of targeted restoration strategies were conducted. The results show that： ① The total area of landscape pattern types in the study area was 48 207.72 km²， accounting for 65.70% of the total area of the study area， of which the core area was 36 394.50 km²， accounting for 49.60% of the total area of the study area. A total of 30 ecological sources were screened， covering an area of 2 522.84 km². The first， second， and third sources were 3， 12， and 15， respectively. ② A total of 67 ecological corridors were extracted， with a total length of 3 318.37 km； a total of 138 ecological pinch points were identified， covering an area of 154.43 km². A total of 144 ecological obstacle points were identified， covering an area of 603.65 km². ③ The ecological source， first-class ecological corridor， and ecological pinch point were classified as key protection areas， with an area of 3 619.21 km². The second-level ecological corridor， the third-level ecological corridor， and the ecological barrier point were classified as ecological restoration areas， with an area of 1 709.27 km². The area outside the key protection area and ecological restoration area was divided into an ecological control area， with a total area of 68 050.52 km². ④ Finally， the ecological security optimization pattern of "two screens， four districts， six cores， four corridors， and multiple points" in Guangxi Beibu Gulf Urban Agglomeration was constructed. ⑤ The research results reveal that the driving factors of ecological protection and restoration in the study area included policy constraints， ecological needs， economic development， scientific and technological support， international implementation， and social coordination. It is suggested to implement the ecological science and technology governance scheme based on multi-disciplinary integration and multi-scale coordination. The research results fully reflect the actual characteristics of ecological protection and construction in the study area. The proposed land space ecological function zoning control scheme and targeted control strategy provide a scientific decision-making basis and practical guidance for the high-quality development of "land and sea coordination" ecological protection and construction in the Beibu Gulf Urban Agglomeration of Guangxi.