使用地理物体图像分析 (GEOBIA) 和GIS绘制加纳Atewa景观中的岩矿动态图
Lukman Boakye Adams1, Yuichi S Hayakawa2
1Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido, 060810, Japan. adamslukeman@gmail.com.
Environmental monitoring and assessment
|March 26, 2025
概括
在加纳阿特瓦山脉森林保护区 (Atewa Range Forest Reserve) 露天采金正在迅速扩大,威胁着生物多样性. 卫星监测显示了土地利用的重大变化以及采矿与重要河流系统的距离.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 保护生物学 保护生物学
背景情况:
- 加纳的阿特瓦山脉森林保护区 (ARFR) 是一个重要的生物多样性热点,面临着扩大浮带金矿开采的压力.
- 关于矿业在保护区内的影响及其接近水体的研究有限.
研究的目的:
- 通过使用卫星图像来监测阿特瓦景观的采矿活动和土地使用变化.
- 评估采矿业务与ARFR和河流通道的距离.
- 为了评估矿山后的植被恢复.
主要方法:
- 高分辨率的PlanetScope卫星图像从2018年到2023年.
- 基于地理对象的图像分析 (GEOBIA) 用于变化检测.
- 缓冲分析以确定从矿山到储备和水道的距离.
主要成果:
- 采矿活动每年增长12.3%,导致大量的植被丧失.
- 储备中的采矿显示出不规则的模式,变化率为-21.4%.
- 近50%的开采区位于河道100米以内,0.7%位于ARFR100米以内.
结论:
- 矿业对阿特瓦山脉森林保护区及其生态系统构成重大和日益增长的威胁.
- 持续监测采矿影响对于有效的保护战略至关重要.
- 采矿与水体的接近凸显了水污染的潜在风险.
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