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Updated: May 14, 2025

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大规模河流盆地生态系统健康的关键驱动因素的量化值:黄河上游和中游的案例研究
Xue Li1, Kunxia Yu1, Guoce Xu1
1State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China.
Journal of environmental management
|April 25, 2025
概括
由于植被恢复,黄河流域的生态系统健康状况显著改善,但沙漠地区需要优先恢复. 极端降雨通过植被变化间接影响生态系统健康.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 气候变化研究 气候变化研究
背景情况:
- 全球气候变化和人类活动对生态系统健康构成威胁.
- 确定关键值对于生物多样性,气候减缓和可持续发展至关重要.
- 黄河流域面临着重大的生态挑战.
研究的目的:
- 评估黄河上流和中流的生态系统健康的时空演变 (2000-2020年).
- 研究极端降雨对生态系统健康影响的机制.
- 确定影响生态系统健康的环境和人为因素的门值.
主要方法:
- 采用活力-组织-弹性-服务 (VORS) 模型.
- 使用极端降水指数和部分最小方程结构方程建模 (PLS-SEM).
- 分析了黄河流域2000年至2020年的数据.
主要成果:
- 生态系统的活力和组织增加,表明增强的稳定性和连接性,显着的植被恢复.
- 在69.48%的研究区域,生态系统的健康状况得到改善,主要是由于森林和草原的恢复.
- 确定了影响生态系统健康的夜间光强度,湿度,降水和土地使用强度的值.
- 极端降水通过植被间接影响生态系统健康,累积事件的影响比单一事件更大.
结论:
- 黄河流域的生态系统健康状况总体上有所改善,这得益于生态恢复工作.
- 沙漠地区仍然很脆弱,需要优先考虑的恢复战略.
- 了解环境门和极端天气的间接影响对于可持续的流域管理至关重要.
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