层次分析法在内马铁路内罗毕公园生态选线方案中的应用

为了客观合理地确定内马铁路内罗毕公园生态选线方案，采用层次分析法，结合研究区的现场实际情况，从生态破坏、施工难度和工程造价三个方面构建了3单元11评价指标选线方案模型，并对内罗毕国家公园生态选线的3种方案进行了评估。结果表明:指标权重最高为植被破坏面积、安全防护和建设成本，权重均为0.18；其次为施工周期，权重为0.10；权重最低的为植被恢复成本，权重为0.03。3种方案的难度系数明显不同，方案1的难度系数最小，其值为0.315，方案3的难度系数次之，其值为0.598，方案2的难度系数最大，其值为0.671。分析数据表明，方案1为最优方案，建议优先采用。

Application of Analytic Hierarchy Process(AHP)in the Ecological Route Selection Scheme of Nairobi National Park along Nairobi—Malabar Railway

In order to objectively and rationally determine the ecological route selection scheme for Nairobi National Park along Nairobi-Malabar Railway, the model of route selection scheme with 3 units and 11 evaluation indicators was established from three aspects of ecological damage, construction difficulty and project cost using the analytic hierarchy process (AHP) and combining with the actual situation of the research area, and three schemes of ecological route selection in Nairobi National Park were evaluated. The results showed that the highest index weight was vegetation damage area, safety protection and construction cost, with the weight of 0.18. The second is the construction period, with the weight of 0.10, the lowest weight is the vegetation restoration cost, with the weight of 0.03. The difficulty coefficient of the three schemes is obviously different, the difficulty coefficient of scheme 1 is the smallest with a value of 0.315, followed by the difficulty coefficient of scheme 3 with a value of 0.598, and the difficulty coefficient of scheme 2 is the largest with a value of 0.671. The analysis data shows that scheme 1 is the optimal scheme, which is recommended to be adopted in priority.