| 重金属污染耕地轮作休耕治理效果综合评价方法与案例研究 |
| Comprehensive Evaluation Method and Case Study on the Remediation Effectiveness of Crop Rotation and Fallow for Heavy Metal-Contaminated Farmland |
| 投稿时间：2024-08-30 修订日期：2025-04-11 |
| DOI：10.19316/j.issn.1002-6002.2026.01.25 |
| 中文关键词: 重金属污染 轮作休耕治理 综合评价 熵权法 |
| 英文关键词:heavy metal-contamination rotation and fallow management comprehensive evaluation entropy weight method |
| 基金项目:2024年度湖南省自然科学基金科教联合项目(2024JJ8035) |
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| 中文摘要: |
| 实施耕地重金属污染治理是我国保障耕地永续利用的一项重大战略决策。从生态效益、社会效益、经济效益3个维度出发,构建了涵盖19个二级指标的综合评价体系,运用熵权法确定指标权重并进行综合评价。基于湖南省2009—2022年统计数据,运用综合评价方法研究湖南省重金属污染耕地治理效果。研究发现,2016年(含)之后的湖南省耕地污染治理效果提升速度是2016年之前的1.64倍。2022年综合评价值为0.855 4,是2009年的3.84倍,2016年的1.79倍,研究区域整体治理效果呈持续向好的发展趋势。2010年综合评价值最小,为0.209 9,耕地生态环境水平处于较低状态。2022年生态效益评价值为0.326 8,社会效益评价值为0.237 6,经济效益评价值为0.291 0,表明湖南省重金属污染耕地治理不仅在生态领域,而且在社会和经济领域都取得了显著成效。湖南省耕地重金属污染治理成效显著,但仍需认识到治理任务的艰巨性,持续提升治理体系的系统性。 |
| 英文摘要: |
| The implementation of remediation for heavy metal-contaminated rural farmland is an important strategic decision in China to ensure the sustainable utilization of arable land.A comprehensive evaluation system comprising 19 secondary indicators was constructed from three dimensions: ecological benefit,social benefit and economic benefit.The entropy weight method was applied to determine index weights and conducts a comprehensive evaluation.Based on the statistical data of Hunan Province from 2009 to 2022,the comprehensive evaluation method was used to examine the effectiveness of heavy metal-contaminated farmland remediation in the region.The study found that the improvement rate of remediation effectiveness after 2016 (inclusive) was 1.64 times than before.The comprehensive assessment value for 2022 was 0.8554,which is 3.84 times that of 2009 and 1.79 times that of 2016,indicating a consistently positive development trend in the overall remediation effectiveness across the study area.The value of comprehensive evaluation in 2010 was the lowest at 0.2099,reflecting a relatively low level of farmland ecological environment quality.In 2022,the ecological benefit evaluation value was 0.3268,the social benefit evaluation value was 0.2376,and the economic benefit evaluation value was 0.2910,indicating that the remediation of heavy metal-contaminated farmland in Hunan Province has achieved significant results not only in the ecological domain but also in social and economic aspects.While the remediation of heavy metal-contaminated farmland in Hunan Province has yielded remarkable outcomes,it remains essential to recognize the complexity of the remediation task and to continuously enhance the systematic nature of the governance framework. |
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