评估土地使用/土地覆盖面变化对埃及卡弗尔-埃尔-谢赫省,利用遥感
Abdalmonem Alkhawaga1,2, Mohamed Mohamed3, Bakenaz Zeidan1
1Department of Irrigation and Hydraulics Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt.
Scientific reports
|April 12, 2025
概括
埃及 埃及 埃及 埃及
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 农业科学 农业科学
背景情况:
- 埃及的农业土地面临着无组织的城市扩张的威胁.
- 这种蔓延威胁到粮食安全和区域生态系统.
- 尼罗河三角洲的卡弗尔-埃尔-谢赫省是一个关键的关注领域.
研究的目的:
- 评估1990年至2018年卡弗尔·埃尔谢赫的土地使用和土地覆盖 (LULC) 变化.
- 提出一种使用正常化差异植被指数 (NDVI) 考虑作物种植季节的分类增强技术.
- 量化城市扩张对农业用地和自然保护区的影响.
主要方法:
- 在Landsat卫星图像上使用最大概率算法应用监督分类.
- 使用了光谱带,并将正常化差异植被指数 (NDVI) 纳入用于增强分类.
- 分析了1990-2018年期间的LULC变化,重点是农业用地和布鲁卢斯湖.
主要成果:
- 布鲁卢斯湖自然保护区面积减少了约6.3%.
- 卡弗尔·埃尔-谢赫省在2010年至2018年期间损失了大约91.5平方公里的农业用地.
- 由于城市扩张,每年农业用地损失率约为0.4%.
- 通过NDVI集成,分类准确度提高了4.4%.
结论:
- 无组织的城市扩张正在迅速消耗卡弗尔埃尔谢赫的农业用地.
- 迫切需要定期进行LULC评估,使用高分辨率数据进行有效的规划.
- 缓解和适应战略对于解决农业土地损失和保护粮食安全至关重要.
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