相关实验视频
Updated: Jun 12, 2026

04:35
Comparative Study of Simulation of Temperature Rise in Ring Main Unit
Published on: July 5, 2024
气候变化将影响亚洲的水塔
Walter W Immerzeel1, Ludovicus P H van Beek, Marc F P Bierkens
1FutureWater, Costerweg 1G, 6702 AA Wageningen, Netherlands. w.immerzeel@futurewater.nl
概括
气候变化影响着河流流动和14亿人的粮食安全. 印度河和布拉赫马普特拉河流域面临着水资源减少的最大风险,威胁着数百万人.
科学领域:
- 水文学的水文学
- 气候科学 气候科学
- 粮食安全 粮食安全
背景情况:
- 超过14亿人依赖亚洲主要河流的水:印度河,甘河,布拉赫马普特拉河,长江河和黄河.
- 上游的雪和冰储备对于季节性水的供应至关重要,但易受气候变化的影响.
研究的目的:
- 评估融化水在亚洲主要河流流域中的作用.
- 确定气候变化对这些地区的水资源和粮食安全的影响程度.
主要方法:
- 对融化水对河流流量的贡献进行分析.
- 气候变化对水资源的影响建模.
主要成果:
- 融水对印度河至关重要,对布拉马普特拉河很重要,对河,长江和黄河不那么重要.
- 印度河和布拉姆普特拉河流域最容易受到气候变化导致的流量减少的影响.
- 在这些脆弱的盆地,大约6000万人的粮食安全受到威胁.
结论:
- 气候变化对印度河和婆罗门河流域的水资源和粮食安全构成重大风险.
- 这些高度敏感的地区需要有针对性的适应战略.
- 了解融水的重要性的区域差异对于有效的水资源管理至关重要.
相关概念视频
Global Climate Change
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
What is Climate?
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
Responses to Drought and Flooding
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.
Hot Weather Concreting
Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Adaptations that Reduce Water Loss
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.
Effect of Sea Water on Concrete
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks, which undergo...
Concrete in areas between tide marks, which undergo...

