相关实验视频
Updated: Jan 7, 2026

12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
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时间空间土地利用动态和景观生态风险评估在一个人造绿洲,中国西北部
Scientific reports
|December 26, 2025
概括
干旱绿洲系统的土地利用变化显示了耕地和建筑用地的大幅扩张,增加了生态风险. 以保护为重点的管理对于平衡发展和生态系统稳定至关重要.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 生态生态学 生态生态学
背景情况:
- 管理干旱绿洲系统需要了解长期的土地使用动态和生态影响.
- 人工绿洲是脆弱的生态系统,易受土地利用变化的影响.
研究的目的:
- 分析阿拉尔回收区1990-2019年土地使用/土地覆盖 (LULC) 动态.
- 评估生态风险,并确定LULC变化的驱动因素.
- 模拟土地利用规划的未来场景.
主要方法:
- 利用多时的Landsat图像和监督的SVM分类来进行年度LULC绘图.
- 量化面积变化,过渡矩阵和景观模式指标.
- 综合社会经济和气候数据用于驱动分析和CA-马尔科夫情景模拟.
主要成果:
- 耕地,果园和建筑用地显著扩大,取代了未使用的天然植被.
- 2005年左右,LULC的结构性转折点发生了,受到政策和市场因素的影响.
- 观察到景观碎片化增加和生态风险集中,特别是在塔林河沿岸.
结论:
- 土地利用变化在农业发展和生态系统稳定之间存在权衡.
- 盐的降解和侵蚀是研究区域的关键生态问题.
- 场景模拟表明,以保护为导向的管理可以减轻与开发相关的生态风险.
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