While 75% of our planet is covered with water, only about 2% is fresh water that comes from rivers, lakes, ice and snow.
虽然地球的75%被水覆盖,但只有大约2%是来自河流、湖泊、冰雪的淡水。
Groundwater may constitute anywhere from approximately 22 to 30% of fresh water, with ice accounting for most of the remaining 78 to 70%.
地球上所有的地下水大约占淡水总含量的22%至30%,而冰占所有淡水的70%至78%。
But a sudden influx of fresh water from melting ice could also disrupt the ocean currents that drive upwelling.
“海洋生态系统是由多种资源孕育而非单一依靠冰川,”胡德说,“例如,洋面上升是一种自然循环现象,富含养分的冷水从海底升起,滋养了海面的生物。 但是,由于冰川的融化而导致大量淡水突如其来涌入海洋,这可能会破坏洋流的正常循环。”
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