使用伊格尔森的生态水文视角,重新审视中国洛斯高原重新植被的水文遗产
Jialiang Zhou1, Yuting Yang2, Qiang Liu1
1State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; Key Laboratory for Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China.
The Science of the total environment
|April 26, 2024
概括
洛斯高原的再生植被将水域转移到平衡状态,尽管降水不足,但增加了蒸发透气 (ET). 这凸显了植被的重要性.
科学领域:
- 水文学的水文学
- 生态生态学 生态生态学
- 环境科学 环境科学
背景情况:
- 在中国洛斯高原的重新植被努力增加了植被的绿色.
- 这种广泛的绿化对水气候可持续性和水文影响仍在争论中.
- 伊格尔森的最佳性假设为理解这些水文效应提供了一个框架.
研究的目的:
- 评估洛斯高原的再生植被是否超过了水气候限制.
- 研究植被变化的水文效应,特别是干旱的影响.
- 分析植被状态 (平衡与扰乱) 以及它们对水平衡的影响.
主要方法:
- 使用伊格尔森的生态最佳性理论 (1982-2015) 对植被状态的地理空间估计.
- 干旱复合分析以检查不同植被状态下的水文反应 (敏感性,分区).
- 在生长前和生长后的水文效应的比较.
主要成果:
- 再生植被增加了与更潮湿的气候相关的平衡状态的水域的比例.
- 根区土壤干旱导致流水减少 (Q) 和各种蒸发转化 (ET) 反应 (降低了再生植被前,增加了再生植被后).
- 均衡状态的水域表现出较低的ET灵敏度和更稳定的ET分区与降水 (P) 相比.
结论:
- 均衡的植被状态对于维持生态系统蒸发转化 (ET) 是至关重要的.
- 重生植被的水文效应是复杂的,取决于植被状态和气候.
- 考虑到植被状态的水文调节对于评估植被变化影响至关重要.
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