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Components of the comprehensive radioecological criticality index (RECI) for territories

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Zenodo2025-04-04 更新2026-05-26 收录
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This document presents a comprehensive framework for assessing radioecological risks in contaminated territories, developed by the Institute of Agroecology and Environmental Management of the NAAS (Ukraine). The methodology integrates landscape, soil, and anthropogenic factors to calculate a Radioecological Criticality Index (RECI) using standardized coefficients derived from long-term monitoring and modeling data. Key Components: 1. Environmental Parameters: o Hydrographic conditions (distance to water bodies) o Terrain morphology (slope steepness) o Runoff accumulation intensity o Soil cover types (77 genetic soil classifications) 2. Land Use & Contamination: o Land cover types (e.g., forests, agricultural areas, wetlands) o ¹³⁷Cs contamination levels (10 classes, kBq/m²) o Anthropogenic pressure (agricultural/forestry activities) 3. Dose Assessment: o Population dose load (5 tiers, mSv/year) Tables Included: · Table 1: RECI component coefficients (Hc, Tm, Ri, Sc, etc.) · Table 5: Soil cover coefficients (e.g., Podzolic chernozems = 0.45) · Table 6: ¹³⁷Cs contamination coefficients (73.5 for >1480 kBq/m²) · Table 7-9: Land cover, landscape contamination, and dose load coefficients. Applications: · Prioritizing remediation efforts in radioactively contaminated regions. · Supporting land-use planning and agricultural safety measures.

本文件呈现了一套用于评估受污染区域放射性生态风险的综合框架,由乌克兰国家农业科学院(National Academy of Agrarian Sciences of Ukraine,简称NAAS)农业生态学与环境管理研究所研发。该方法整合景观、土壤与人为活动因素,基于长期监测与建模数据得到的标准化系数,计算放射性生态临界指数(Radioecological Criticality Index,RECI)。 核心组成部分: 1. 环境参数: - 水文条件(距水体距离) - 地形地貌(坡度陡缓) - 径流累积强度 - 土壤覆盖类型(77种遗传土壤分类) 2. 土地利用与污染状况: - 土地覆盖类型(例如森林、农业用地、湿地) - ¹³⁷Cs污染水平(10个等级,单位:kBq/m²) - 人为活动压力(农业/林业活动) 3. 剂量评估: - 人群剂量负荷(5个层级,单位:mSv/年) 包含表格: · 表1:放射性生态临界指数组分系数(Hc、Tm、Ri、Sc等) · 表5:土壤覆盖系数(例如灰化黑钙土(Podzolic chernozems)= 0.45) · 表6:¹³⁷Cs污染系数(>1480 kBq/m²时取值为73.5) · 表7至表9:土地覆盖、景观污染与剂量负荷系数。 应用场景: · 对放射性污染区域开展修复工作的优先级排序 · 支撑土地利用规划与农业安全措施制定。

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2025-04-03
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