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    江苏省矿山损毁土地和恢复治理状况2022年度监测与分析

    Monitoring and analysis of mining-destroyed land and mine reclamation in Jiangsu Province in 2022

    • 摘要: 为及时准确监测与分析江苏省矿山开发损毁土地和恢复治理情况,该文以覆盖江苏全省的空间分辨率优于2 m的2021—2022年遥感数据为核心数据源,结合采矿权、探矿权等行政资料,采用“室内遥感信息提取- 野外实地验证- 数据关联分析”的技术流程,对江苏省内2022年新增矿山开发损毁土地与矿山环境恢复治理情况开展系统监测研究。结果表明: 2022年江苏省新增矿山开发损毁土地面积199.99 hm2; 新增矿山恢复治理土地面积1 643.85 hm2,其中工程恢复治理面积1 618.85 hm2,占比98.48%,标准化治理特征显著。进一步通过空间集中度模型(基尼系数1.037)、矿种贡献度分析及香农多样性指数(标准化得分58.8分)量化研究发现: 矿山恢复治理(关联开发占地)呈现“徐州- 镇江双核心集聚”特征(2市合计占比50%),区域分布差异明显(苏南占比47.8%、苏北占比38.2%、苏中占比14.0%); 矿种结构以建材非金属矿为主导(占比95.48%),金属矿占比不足2%,多样性中等偏低; 同时,2022年恢复治理管控成效显现,但仍存在空间集中度过高、矿种结构单一等问题。该文研究成果不仅明确了江苏省2022年矿山开发与治理的核心特征,更通过“恢复治理数据反向关联占地特征”的分析思路,为小样本、截面数据下的矿山动态监测提供了可行方法,可为江苏省矿山开发秩序管控、矿山生态环境保护修复及资源可持续管理工作提供基础资料与科学依据。

       

      Abstract: This study aims to achieve timely and accurate monitoring and analysis of mining-destroyed land and mine reclamation in Jiangsu Province. To this end, this study examined 2021—2022 remote sensing data with a spatial resolution better than 2 m that cover the whole Jiangsu Province, along with administrative information on mining and exploration rights. Using a technical workflow consisting of the indoor extraction of remote sensing information, field verification, and data correlation analysis in sequence, this study systematically investigated the newly added mining-destroyed land and mine reclamation in the province in 2022. The results indicate that in 2022, mining-destroyed land in Jiangsu Province expanded by 199.99 hm2. Meanwhile, the reclaimed mine land increased by 1 643.85 hm2 in area, including 1 618.85 hm2 of engineering-based reclaimed land (98.48%), suggesting prominent standardized management. Further quantitative analysis was conducted using a spatial concentration model (Gini coefficient: 1.037), mineral contribution analysis, and Shannon diversity index (standardized score: 58.8). The analysis results reveal that mine reclamation, correlated with land occupied by mine development, in Jiangsu Province exhibited dual-core agglomeration in Xuzhou and Zhenjiang, with the reclaimed land in the two cities collectively accounting for 50% of the total in the province. The reclaimed land distribution differed greatly across varying regions, with 47.8% distributed in southern Jiangsu, 38.2% in northern Jiangsu, and 14.0% in central Jiangsu. Additionally, the mineral species in the province were dominated by non-metallic minerals for building materials (proportion: 95.48%), while metallic minerals accounted for less than 2%, suggesting a moderate-to-low diversity. The reclamation efforts achieved prominent outcomes in 2022. However, some problems remained, such as excessively high spatial concentration and low mineral diversity. Overall, this study elucidates the core characteristics of mine development and management in Jiangsu Province in 2022. Notably, through the reverse correlation between reclamation data and land occupation characteristics, this study offers a feasible method for dynamic mine monitoring under conditions of a small sample size and cross-sectional data. This study can provide basic information and a scientific basis for the supervision of orderly mine development, the protection and restoration of mine ecological environments, and the sustainable management of resources in Jiangsu Province.

       

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