农林系统下的农田水文循环和高效利用水资源在石荒漠化环境中的水资源
Qinglin Wu1, Lan Wang1,2
1School of Karst, Guizhou Normal University, State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, China.
Heliyon
|August 21, 2024
概括
卡斯特沙漠化阻碍了水的利用. 农林系统通过增加土壤水储量和提高用水效率来改善水资源管理,这对于对抗干旱至关重要.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 生态生态学 生态生态学
背景情况:
- 由于地表水透,卡斯特荒漠化 (KD) 地区面临着独特的"卡斯特干旱".
- 有效利用水资源对于对抗KD至关重要.
研究的目的:
- 监测和分析农林系统中五种水类的储存和转化,在不同的KD强度.
- 评估农林业在提高KD地区的用水效率 (WUE) 中的生态效益.
主要方法:
- 现场监测降水,地表水 (SW),地下水 (GW),土壤水 (SoW) 和植物水 (PW) 在三个不同的地研究区域.
- 在农林系统中分析水的转化速率和土地蒸发转化 (LE).
- 在不同干旱压力水平下评估WUE.
主要成果:
- 降水量,降雨量和土地蒸发转化 (LE) 之间存在正相关性,LE接近土壤蒸发.
- 农林系统减少了地表排水,增加了土壤透,减少了透气和土壤蒸发,提高了用水量.
- 土壤水 (SoW) 显示出最大的储量 (40.72-82.58%),其次是植物水 (PW) (9.79-49.97%),地下水 (GW) (9.43-30.20%),以及地表水 (SW) (0.14-12.71%).
- 干旱压力对WUE产生积极影响,在中等强度KD环境中观察到的效率最高.
结论:
- 农林系统在优化KD地区的水资源利用方面是有效的.
- 了解水的转化机制为解决石干旱和推进石地区的可持续发展提供了理论支持.
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