[根据NDVI指数分析波士顿湖盆地植被覆盖面和驱动因素的时间和空间动态变化]
Meng-Jing Guo1, Shao-Shun Han1, Bo Yuan2
1State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi'an University of Technology, Xi'an 710048, China.
Huan jing ke xue= Huanjing kexue
|March 14, 2026
概括
中国波士顿湖盆地的正常化差异植被指数 (NDVI) 显示出改善的趋势,植被覆盖面增加了该地区的一半以上. 这种积极的变化与气候因素有关,有助于生态系统的稳定.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 波士顿湖是中国西北干旱地区的重要生态枢纽,在维持生态平衡方面面临着挑战.
- 研究植被动态对于博斯湖盆地生态系统的可持续发展至关重要.
研究的目的:
- 分析2001年至2023年波士顿湖盆地正常化差异植被指数 (NDVI) 的时空动态.
- 确定影响NDVI变化的驱动因素,特别是气候因素.
主要方法:
- 使用Landsat数据来计算NDVI值.
- 应用了曼-肯德尔趋势测试,森的斜率估计和赫斯特指数用于时空分析.
- 研究了NDVI与气候因素 (降雨,温度,阳光,蒸发) 之间的相关性.
主要成果:
- 每年最大的NDVI总体上升了 (0.0033a-1),其中52.18%的地区呈现了上升趋势.
- 生长季节NDVI增加,在夏季达到顶峰,与年度趋势一致.
- 赫斯特指数预测未来的NDVI改善盆地的65.28%,其中34.72%显示退化.
- 年度最大NDVI与降雨,温度,阳光和蒸发有正相关;与阳光和总蒸发有显著相关.
结论:
- 波斯湖盆地的NDVI在过去23年里有所改善.
- 气候因素,特别是阳光和蒸发,显著影响NDVI趋势.
- 这些发现为Bosten湖流域的生态管理和可持续发展提供了科学基础.
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