江苏省输变电类生产建设项目水土保持综合评价

水土保持综合评价是水保技术方案及政策可行性评价的基本原则和依据。从水土流失基本情况和水土保持防治效果两方面建立了评价指标体系,采用层次分析法(AHP)和熵权法确定了指标权重,利用因子加权求和法构建了评价模型。以江苏省近5a典型输变电类生产建设项目为研究实例,运用评价模型进行了水土保持综合效益评价,并针对不同水土保持类型区条件下的输变电项目进行了效益分析比较。结果表明,丘陵区条件下的输变电类生产建设项目水土保持效益最大,其次为一般平原区,最后为平原沙土区;水土保持效益波动性从大到小顺序依次为:一般平原区丘陵山区平原沙土区。

Comprehensive Evaluation of Soil and Water Conservation in Power Transmission Engineering Projects of Jiangsu Province

Comprehensive evaluations of soil and water conservation may provide principles and a theoretical basis for the policy development of soil and water conservation and the feasibility assessment of technological scheme. An index system was built based on the two factors of the basic situation of soil and water loss and the protective efficiency of soil and water conservation. An evaluation model was constructed based on factor weighted sum, and the factor weights were determined by using AHP and entropy weight method. By taking the typical power transmission projects in Jiangsu Province for examples and using the evaluation model, the study made a comprehensive evaluation of the soil and water conservation benefits and a comparative analysis of the soil and water conservation benefits for different types of soil and water conservation areas. Results showed that, as for the soil and water conservation benefits in power transmission engineering projects, the hilly area had the greatest beneficial result, followed by the general plains area and the sandy plain area. For the fluctuation of soil and water conservation benefits, the general plain area was the first, the hilly area was the second, and the sandy plain area was the third in a descending order.