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托福阅读材料推荐:冰川正在融化

2016-07-18 16:06:41来源：网络

　　Clint Muhlfeld

　　USGS Research Ecologist

　　Glacier National Park is an excellent natural laboratory to examine the effects of climate change. This area is actually warming at two to three times the rate of the global average rise in air temperatures. So these increased air temperatures are decreasing the snow pack and the glaciers in the high country. And increasing disturbance events like wildfire that we're experiencing.

　　Joe Giersch

　　USGS Aquatic Entomologist

　　Some of the species that we're studying, these aquatic insects, might be the first species actually to go extinct due to the effects of global climate change. We've already seen a contraction in the distribution of some of these species in comparison to collections that were done back in the 1960s.

　　Dan Fagre

　　Even though glaciers might seem disconnected and far away to people, they actually effect a lot of people downstream, and that's even evident in other things such as the way that the snowpack effects the huckleberry crop, and this is of course a vital food source for grizzly bears.

　　Tabitha Graves

　　USGS Research Ecologist

　　Animals that live in these upper elevations are adapted to the colder temperatures there and because we're predicting warmer temperatures, they may be particularly vulnerable to these changes. They also have very specific food needs and the food changes for them could also influence their ability to thrive.

　　Dan Fagre

　　In spite of the fact that it will be different in the future, it's still going to be a valuable asset to Americans, both as a research outdoor laboratory, and maybe as an iconic lesson as to what climate change can do to natural landscapes.

　　以上就是新东方在线托福网为你带来的托福阅读材料推荐:冰川正在融化，更多精彩敬请关注新东方在线托福网。

本文关键字: 托福阅读 托福阅读材料推荐

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