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降雨分区特征和中国Mu Us沙地典型庇护森林的模拟
Zhaocen Zhu1, Ming'an Shao2, Xiaoxu Jia3
1College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
The Science of the total environment
|June 22, 2024
概括
在Mu Us Sandy Land的庇护森林通过降雨分区影响水循环. 像Amygdalus pedunculata和Amorpha fruticosa这样的灌木物种在充电土壤水方面比Pinus sylvestris更有效.
科学领域:
- 生态生态学 生态生态学
- 水文学的水文学
- 林业林业 林业 林业 林业
背景情况:
- 荒漠化是Mu Us Sandy Land (中国) 的一个重大环境挑战.
- 保护林是为了打击荒漠化和改变地表特征而建立的.
- 了解降雨分区是有效的植被恢复和水资源管理的关键.
研究的目的:
- 在三个典型的庇护森林物种中调查降雨分区过程.
- 为了确定降雨分区的控制因素,对土著和异国物种进行分区.
- 为干旱和半干旱地区的可持续土壤水资源管理提供见解.
主要方法:
- 基于事件的降雨分区分析.
- 在雨季 (2021-2022) 期间对落,干流和拦截损失的现场观测.
- 应用修订的加什模型来分析影响因素.
主要成果:
- 降雨分区在物种之间有所不同: Amygdalus pedunculata (71.01%的降雨量,8.23%的茎流量,20.76%的拦截损失), Amorpha fruticosa (74.65%的降雨量,8.47%的茎流量,16.88%的拦截损失) 和Pinus sylvestris (73.27%的降雨量,1.44%的茎流量,25.29%的拦截损失).
- 与Pinus sylvestris相比,灌木的树冠表现出更高的道比率,促进土壤的水补充.
- 降雨量和强度与分区有显著的相关性;持续时间没有.
结论:
- 植被类型 (灌木/树木,土著/异国情调) 显著影响降雨分区和土壤补水.
- 干流主要受到降雨转移的影响,而拦截损失取决于树冠储存能力和蒸发率.
- 综合考虑物种特定的降雨分区对于Mu Us Sandy Land的科学庇护森林管理至关重要.
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