College of Architecture, Xi'an University of Architecture and Technology, Xi'an 710055, China.
State Key Laboratory of Green Building in Western China, Xi'an 710055, China.
Ying Yong Sheng Tai Xue Bao. 2023 Jan;34(1):178-186. doi: 10.13287/j.1001-9332.202301.022.
How to combine regional ecological risks and local ecological needs to construct ecological security is one of the main issues of its application in territorial spatial governance and associated with whether it can be effectively applied. Based on the "source" accessibility and the quality of space, we constructed the ecological security pattern of Xianyang City through the way of source-corridor-node. During the construction processes, we combined the cha-racteristics of topography, influencing factors of regional ecological security, and landscape characteristics. We coupled them with morphological spatial pattern analysis (MSPA) and comprehensive evaluation results of ecological resistance, ecological connectivity and ecosystem service value, and superimposed with ecological gradient ana-lysis. The results showed that there were 66 ecological sources, with a total area of 2506.65 km, accounting for 24.6% of the total area of Xianyang City, which were mainly distributed in the northeast, west and central mountainous areas. There were 106 ecological corridors with a total length of 823.5 km, including potential corridors, water systems, irrigation canal sites, Qinzhidao and other natural and cultural systems, which extended along the ecological source to the northwest and south Weihe River. There were 20 ecological nodes to improve ecological connectivity, which were mainly distributed between second layers of loess tableland and arid mountainous areas with banded distribution in the north part of the city.
如何结合区域生态风险和地方生态需求构建生态安全格局，是其在国土空间治理中应用的主要问题之一，关系到其能否有效应用。本研究基于“源”的可达性和空间质量，采用源-廊道-节点的方法构建了咸阳市生态安全格局。在构建过程中，结合地形特征、区域生态安全影响因素和景观特征，将其与形态空间格局分析（MSPA）和生态阻力、生态连通性和生态系统服务价值的综合评价结果相结合，并叠加生态梯度分析。结果表明，咸阳市共有 66 个生态源，总面积 2506.65km²，占咸阳市总面积的 24.6%，主要分布在东北部、西部和中山区；有 106 条生态廊道，总长度 823.5km，包括潜在廊道、水系、灌溉渠遗址、秦直道等自然和文化系统，沿生态源向西北和南部渭河延伸；有 20 个生态节点，用以提高生态连通性，主要分布在黄土台塬的第二层和北部干旱山区，呈带状分布。
