The pie charts show the proportions of fresh and salt water worldwide, breaking down fresh water into four categories, while the bar chart compares the percentage of water used for residential, industrial, and agricultural purposes in Egypt, Saudi Arabia, and Canada.
Overall, saline water constitutes the vast majority of the world’s total water, with fresh water making up only a small fraction, for which glaciated ice and snow accounts for the largest proportion; meanwhile, the usage of water in agriculture dominates in Egypt and Saudi Arabia, whereas industry is the most significant user in Canada.
It is reported that 97.5% of the world’s water consists of saline water, leaving just 2.5% as fresh water, of which nearly 70% is confined to glaciers and permanent snow and almost 30% constituting underground water, with only a negligible amount of 0.3% as accessible fresh water in stark contrast to the expansive reserves of saline water.
Breaking down fresh water further by analyzing its use in the three aforementioned countries, it is seen that Egypt’s agriculture sector consumes nearly 40%, while domestic and industrial utilization sit at roughly 10% each. Saudi Arabia exhibits the same pattern though both agricultural and industrial consumption stand 10% higher than Egypt’s, while domestic usage is almost half that of the African nation.
Conversely, Canada’s primary usage of water, hovering around the 50% mark, is in industry, whilst the least, sitting at 18%, is for agriculture and 30% for domestic purposes.
中文大意(机翻,仅供参考)
饼图展示了全球淡水与咸水的比例,并进一步细分了淡水的四个类别,柱状图则对比了埃及、沙特阿拉伯和加拿大三个国家在住宅、工业和农业领域的用水比例。
总体来讲,咸水占全球水资源的绝大部分,淡水仅占少数,其中大部分淡水以冰川和永久积雪的形式存在;与此同时,埃及和沙特阿拉伯的农业用水占主导,而加拿大则以工业用水为主。
全球97.5%的水为咸水,剩余的2.5%为淡水,其中近70%的淡水以冰川和永久积雪的形式存在,近30%为地下水,可利用的淡水量仅占0.3%,与海量的咸水储备形成鲜明对比。
进一步分析三国的淡水使用情况后发现,埃及的农业用水接近40%,其住宅和工业用水分别约为10%。沙特阿拉伯的情况类似,但其农业和工业用水分别比埃及高出10%,其住宅用水几乎是埃及的一半。
相反,加拿大的用水用途主要为工业,占比接近50%,其农业用水最少,仅为18%,住宅用水占30%。
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