植穴控制体对盐渍土生态重建的可持续性评价

Evaluation of Sustainability for Ecological Restoration of Saline Soil Using Planting Hole Control Body

基于盐渍土生态重建过程影响因子的复杂性,采用综合指标评价方法,选取4类母指标和相应的13项子指标对植穴控制体生态重建技术进行可持续评价。4类母指标分别为土壤养分与结构改良程度、生产力持续水平、组分间关系协调性和生态、社会效益,对应的13项子指标分别为:土壤水分、土壤含盐量、土壤养分含量、土壤容重和水质;土地利用效果、土地生产力水平与稳定度、绿地结构与环境功能;生态重建年限、生物群落变化和生态景观效果;小气候效益和游憩的功能效益。经权重分析认为,植穴控制体生态重建技术评价分值为0.772,评价等级为Ⅳ级,表明植穴控制体模式的盐渍土生态重建技术具有较好的稳定性和可持续的功能效应。

For the complexity of ecological restoration effects on coastal saline soil, using a comprehensive evaluation of sustainability method, the ecological restoration technique called planting hole control body（PHCB） was evaluated by setting up 4 types of indicators and 13 corresponding indicators. Types of indicators were improvement of soil nutrient and structure, sustainable level of productivity, coordination between the components and ecological/environmental benefits. Accordingly 13 corresponding indicators were soil moisture, soil salinity, soil nutrient content and quality, soil bulk density and effluent water quality, effect of land use, land quantitative level and stability, green space structure and environmental function, ecological restoration time, diversity variation of community and landscape ecological effect, microclimate benefit and recreation function benefit. Results showed that the comprehensive evaluation mark was 0.772, which indicated that applying PHCB to ecological restoration of saline soil has obtained good stability and sustainability.