长期土地使用/土地覆盖变化影响的空间土壤损失预测:斯瓦特地区的一个案例研究
Muhammad Haseeb1,2, Zainab Tahir3, Syed Amer Mahmood3
1Institute of Environmental Engineering and Research, University of Engineering and Technology Lahore, P.O. Box 54780, Lahore, Pakistan. mrhaseeb223@gmail.com.
Environmental monitoring and assessment
|December 13, 2023
概括
巴基斯坦的土壤侵蚀.
科学领域:
- 环境科学 环境科学
- 地质科学 地质科学
- 遥感和地理信息系统 (GIS) 的远程检测
背景情况:
- 土壤侵蚀是一个主要的环境问题,由森林砍伐,农业和城市化导致的土地退化带来.
- 预测土壤侵蚀对于管理土地资源至关重要,尤其是在地形脆弱的地区.
- 土地利用和土地覆盖 (LULC) 变化随着时间的推移显著影响侵蚀模式.
研究的目的:
- 预测和评估巴基斯坦斯瓦特地区的土壤侵蚀,考虑到2001年至2021年的LULC变化.
- 评估"十亿树海项目" (BTTP) 对缓解该地区土壤侵蚀的影响.
- 分析地形特征与侵蚀模量之间的关系.
主要方法:
- 利用遥感 (RS) 和地理信息系统 (GIS) 进行LULC分析.
- 应用了经过修订的普遍土壤损失方程 (RUSLE) 模型,其中包括降雨,地形,土地覆盖和土壤侵蚀性等因素.
- 2001年,2011年和2021年根据LULC数据计算的土壤侵蚀率.
主要成果:
- 在所有LULC场景中,土壤损失被归类为潜在低 (2001年:67.26%,2011年:61.78%,2021年:65.32%).
- 土壤损失的最大速度是80t/ha/年 (2001),120t/ha/年 (2011) 和96t/ha/年 (2021).
- 与2001年和2011年相比,2021年土壤损失的减少表明了"亿树海项目"的积极影响.
结论:
- 森林植被倡议,如亿树海项目,显示出减少土壤侵蚀的潜力.
- 环境保护计划对于脆弱地形地区的土壤保护至关重要.
- 集成的RS,GIS和RUSLE建模有效评估LULC变化对土壤侵蚀的影响.
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