在斯里兰卡科伦坡的科伦纳瓦沼泽区量化时空动态
R M U B Rathnayake1, G G T Chandrathilake2, D T Jayawardana2,3
1Department of Forestry and Environmental Science, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, CO, Sri Lanka. umandarathnayake719@gmail.com.
Environmental monitoring and assessment
|July 3, 2024
概括
斯里兰卡的科洛纳瓦沼泽地因开发而缩小,将沼泽地转变为陆地植被. 这种湿地退化凸显了恢复和可持续管理干预的迫切需要.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 遥感 遥感 遥感 遥感
背景情况:
- 科洛纳瓦沼泽 (KM) 是斯里兰卡的一个重要湿地,由于人类活动而面临重大退化.
- 湿地提供了重要的生态系统服务,但它们的价值往往被低估,导致它们的衰退.
- 了解湿地动态对于明智的保护和管理决策至关重要.
研究的目的:
- 为了监测Kolonnawa Marsh的时空土地覆盖动态.
- 分析土地覆盖面的变化,并预测沼泽面积的未来趋势.
- 为KM的恢复和可持续管理提供数据.
主要方法:
- 使用GIS对谷歌地球图像 (2000-2021) 和无人机数据 (2022) 的分析.
- 创建50平方米的网格单元,具有独特的ID,用于时空分析.
- 在网格单元内计算和统计比较土地覆盖比例 (地表水,沼泽,陆地植被).
主要成果:
- 随着时间的推移,在所有土地覆盖类别中观察到显著的时空变化.
- 检测到Kolonnawa Marsh总面积的持续减少.
- 沼泽地区正在逐渐转变为陆地植被,这表明湿地退化.
结论:
- 观察到的土地覆盖的变化表明,科洛纳瓦沼泽的湿地退化趋势明显.
- 为了恢复和可持续管理这一关键生态系统,需要紧急干预.
- 该研究强调了监测湿地动态对于有效的环境管理的重要性.
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