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在温带和北极气候下修复,修建或排水湿地的对地下水储存的影响:系统性审查
Arvid Bring1, Josefin Thorslund2, Lars Rosén3
1The Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (Formas), P.O. Box 1206, 111 82, Stockholm, Sweden. arvid.bring@formas.se.
Environmental evidence
|September 18, 2024
概括
湿地恢复工作可以有效地提高沟附近的地下水位,扭转排水影响. 然而,恢复的范围有限,强调需要仔细监测和特定地点的战略,以获得更广泛的水文效益.
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:
- 湿地排水导致了显著的生态系统退化和地下水枯竭.
- 国家计划旨在恢复湿地为息地和营养保留.
- 人们对恢复湿地的水文功能,如地下水储存,越来越感兴趣,特别是在夏季干旱的地区.
研究的目的:
- 系统地审查恢复,建造和排水度湿地的地下水储存效应.
- 评估恢复可以逆转排水影响的程度.
- 了解地下水储存效应如何根据当地条件和干预的距离而有所不同.
主要方法:
- 在8个数据库和多种语言的灰色文学中进行系统的文献搜索.
- 纳入标准侧重于与北极或温带气候的先前冰化地区的相关性.
- 对地下水位变化进行了元分析,考虑了干预距离,湿地类型和干预类型的距离,并对偏差进行了批判性评估.
主要成果:
- 在元分析中包括了146项研究,主要是关于泥炭地;大多数研究集中在湿地内的影响上.
- 在干预区域附近,泥炭土恢复使地下水位平均上升22厘米,而排水导致地下水水平下降19厘米.
- 随着距离的增长,地下水位变化呈指数级下降;在9米处恢复效应减少到50%,在21米处排水效应减少到50%.
结论:
- 泥炭地恢复和排水具有相似的规模,但对地下水位产生相反的影响.
- 修复有效地提高了沟附近的地下水位,但可能无法完全逆转整个受影响地区的排水影响.
- 有效的湿地恢复需要监测和特定地点的策略,特别是如果想要超出直接湿地区域的利益.
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