ISSN 1000-3665 CN 11-2202/P

    焦作缝山公园植被遥感监测与碳储量变化分析

    Remote sensing monitoring of vegetation and analysis of carbon storage changes in Fengshan Park, Jiaozuo

    • 摘要: 全球气候变化使生态系统碳储量研究备受关注,矿山修复后植被碳储量核算是生态修复效果评价的关键内容之一,也是建设“双碳社会”的需要。传统植被碳储量估算方法存在局限,而遥感技术和地理信息系统等的发展为该研究提供了新方向。焦作市缝山公园曾因不规范矿山开采活动导致生态环境严重破坏,自2005年始,当地政府投入资金进行生态修复,采用挂网喷播复绿、鱼鳞坑等工程模式,种植大量乔灌木,使公园植被覆盖度显著提升。研究利用2013年、2018年、2023年3期2 m分辨率的高分1号卫星数据,结合遥感 - 多元线性回归模型,通过样地调查与取样,结合遥感数据预处理,提取植被指数等特征因子,构建并检验植碳储量估测模型。结果表明:(1)2013— 2018年公园植被碳储量明显增加,从1.56×103 t增加到1.90×103 t,2018 —2023年轻微减少至1.78×103 t,10年间总体呈上升趋势;(2)植被碳储量受坡度和人为因素影响,不同坡度区间植被碳密度有差异,如0.46°~ 8.32°缓坡区域植被碳密度较高,而30.45°~48.82°陡坡区域碳密度相对较低;(3)植被碳储量与植被覆盖度呈正相关,变化趋势一致。研究填补了由废弃矿山转型城市公园的植被碳储量研究的空白,为矿山生态修复效果评价及当地“双碳社会”建设提供了科学依据和数据支持。

       

      Abstract: Global climate change has attracted much attention to the study of ecosystem carbon storage, with vegetation carbon estimation after mine restoration emerging as a critical component for evaluating ecological restoration effectiveness and supporting the development of a “dual-carbon society”. Traditional methods for estimating vegetation carbon storage have limitations, while advances in remote sensing technology offer promising alternatives. The fractured mountain park in Jiaozuo City has caused serious damage to the ecological environment due to non-standard mining activities. Since 2005, the local government has invested in ecological restoration, using engineering models such as hanging net spray seeding and fish-scale pits to plant a large number of trees and shrubs, significantly improving the vegetation cove of the park. Using the GF-1 satellite data with a resolution of 2 m in 2013,2018 and 2023, combined with the remote sensing and multiple linear regression model, the vegetation index and other characteristic factors were extracted, and the estimation model of carbon storage was constructed and tested. The results showed that the vegetation carbon storage in the park increased significantly from 2013 to 2018, from 1.56×103 t to 1.90×103 t, and slightly decreased to 1.78×103 t from 2018 to 2023. Vegetation carbon storage is affected by slope and human activities. There are differences in vegetation carbon density in different slope ranges. The vegetation carbon density is higher in the 0.46°~8.32° gentle slope area, while the carbon density is relatively low in the 30.45°~ 48.82°steep slope area. Vegetation carbon storage is positively correlated with vegetation coverage, and the change trend was consistent. The research fills the gap in the study of vegetation carbon storage in urban parks transformed from abandoned mines, and provides scientific basis and data support for the evaluation of mine ecological restoration effects and the construction of local "dual-carbon society".

       

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