在1990-2020年期间,东湖湿地生态环境质量的动态变化,中国
Hongyong Xiang1,2,3, Xiang Li1, Jie Chen4,5,6
1School of Hydraulic and Ocean Engineering, Changsha University of Science and Technology, Changsha, 410114, China.
Scientific reports
|October 3, 2025
概括
东湖湿地中的生态环境质量在1990-2020年间呈现波动趋势. 提高这种质量需要专注于植被,特别是草原,这是生态健康的关键驱动力.
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:
- 东湖湿地 (DLW) 是一个全球重要的生态区域,由于人为和自然压力因素,生态环境质量 (EEQ) 正在下降.
- 在过去的几十年中,DLW的EEQ显著下降,需要紧急评估和有针对性的保护策略.
研究的目的:
- 以远程传感生态指数 (RSEI) 来评估从1990年到2020年在DLW中EEQ的时空动态.
- 在DLW中分析EEQ的空间自相关性模式.
- 使用地理探测器模型 (GDM) 识别和量化影响DLW中EEQ的驱动因素及其相互作用.
主要方法:
- 使用Landsat TM/OLI遥感数据计算RSEI,用于1990-2020年期间.
- 空间自相关分析以了解EEQ的集群模式.
- 应用GDM来确定各种因素对EEQ的影响.
主要成果:
- RSEI值表明EEQ的中等水平 (0.45-0.55),最初的下降趋势随后波动的增加.
- EEQ 呈现出积极的空间相关性和聚类,高质量的区域与草原联系在一起,低质量的区域与石和泥平原联系在一起.
- 植物覆盖面和景观模式被确定为影响EEQ的主要外部驱动因素,证明了与内部因素的协同效应.
结论:
- DLW的EEQ显示了复杂的时空变化,受到自然和人为因素的影响.
- 草原对于在DLW中保持高的EEQ至关重要,这突显了它们在保护工作中的重要性.
- 优先保护和恢复植被,特别是草原,对于改善东廷湖湿地的整体生态环境质量至关重要.
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