[黑龙江盆地植被覆盖面的时间和空间变化及其对气候变化的反应]
1Ministry of Education Key Laboratory of Sustainable Forest Ecosystem Management, School of Forestry, Northeast Forestry University, Harbin 150040, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|September 5, 2024
概括
黑龙江盆地的植被覆盖面从2000年到2020年略有下降,在蒙古,俄罗斯和中国有不同的趋势. 降水对植被的影响明显大于温度.
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:
- 植被覆盖面的动态对于跨境盆地管理至关重要.
- 了解气候变化对植被的影响对于生态稳定至关重要.
研究的目的:
- 分析2000年至2020年间黑龙江盆地植被覆盖面的时间和空间变化.
- 研究植被覆盖面对气候变量 (降水和温度) 的反应.
- 为整个蒙古,中国和俄罗斯的黑龙江盆地的综合管理提供数据.
主要方法:
- 通过谷歌地球引擎利用MOD13Q1遥感数据.
- 计算的规范差异植被指数 (NDVI) 和部分植被覆盖面 (FVC).
- 雇佣的Sen+MK趋势分析和皮尔森相关性用于趋势和气候应对分析.
主要成果:
- 盆地的FVC总体显示略有下降 (每年下降0.1%).
- 蒙古的FVC增长了 (0.13%),而俄罗斯 (-0.15%) 和中国 (-0.08%) 显示下降.
- 降水对FVC (8.2%的面积) 的影响比温度 (2.2%的面积) 更大.
结论:
- 黑龙江盆地经历了整体植被退化,区域差异很大.
- 降水是盆地植被覆盖变化的关键驱动因素,特别是在蒙古.
- 调查结果支持对跨境黑龙江盆地的知情综合管理战略.
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