由于矿山排水而受到破坏的亚北极模式的泥炭地,溶液的枯竭和水文连接性降低
Nicole Balliston1, Owen Sutton1, Jonathan Price1
1Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON N2L3G1, Canada.
The Science of the total environment
|December 29, 2023
概括
资源开采和气候变化减少了哈德逊湾低地泥炭地中的水量,扰乱了水文和地质化学. 这些重要的碳储量可能会在几个世纪内从转变为沼泽.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 地质化学 地质化学
背景情况:
- 哈德逊湾低地泥炭地是关键的全球碳汇和水系统.
- 资源开采和气候变化威胁着泥炭地水的可用性和功能.
- 了解水资源减少对泥炭地水文和地质化学的影响至关重要.
研究的目的:
- 调查除水对泥炭地水文和地化学功能的影响.
- 在12年的时间内,将受影响的泥炭地与未受影响的参考地点进行比较.
主要方法:
- 一个案例研究在De Beers维克多钻石矿附近进行.
- 监测包括水文 (溪流流量,地下水位) 和化学 (孔水,地表水) 参数,沿着1.5公里横段进行监测.
- 从受影响和两个不受影响的参考地点收集数据.
主要成果:
- 受影响的泥炭地显示出耗尽的储水量,并且与参考地点相比,水文连接的时间减少了50%.
- 减少的储水导致了不成比例地降低了矿山下坡的支流流量.
- 减少的储水量改变了溶液的运输,抑制了上升的流量,并限制了以溶液丰富的水到达表面.
结论:
- 脱水显著影响了泥炭地水文和地质化学,导致了长期的变化.
- 溶物度的恢复是一个缓慢的过程,可能会导致转向杂性沼泽.
- 受脱水影响的泥炭地可能更容易受到气候变化引起的水资源减少的影响.
相关概念视频
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
Responses to Salt Stress
13.1K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.1K
Adaptations that Reduce Water Loss
25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K
Tonicity in Plants
30.7K
Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
30.7K


