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California restoration project turns sinking farmland into wetlands
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- 科学
The Nature Conservancy is flooding portions of a delta island to slow land subsidence and create habitat for wildlife. Learn more at https://www.yaleclimateconnections.org/
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The land in California's Sacramento-San Joaquin River Delta is sinking rapidly, and
, .
Hundreds of years ago, the area was mostly a wetland, where waterlogged plants slowly
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B2 · 中高级
能看懂电视新闻就会觉得轻松
- 86% 的单词在 B1 或更简单的水平。
- 每分钟 161 词：自然语速，偏快。
- 整集共有 8 个较难的单词（B2 及以上）。
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I'm Dr. Anthony Leiserwitz and this is Climate Connections. The land in California's Sacramento-San Joaquin River Delta is sinking rapidly, and in the process, it's releasing a lot of climate-warming carbon dioxide. Hundreds of years ago, the area was mostly a wetland, where waterlogged plants slowly
broke down into carbon-rich peat soil. But today it looks totally different. It's now a network of islands, many of which are 10 to 25 feet below sea level. Sydney Chamberlain of the Nature Conservancy says the main reason for this change is agriculture.
Starting in the 1800s, levees were installed, and much of the land was drained to create islands where farmers could grow crops such as corn. When you take water off of peat soils, processes in the soil cause it to release carbon dioxide, which is a greenhouse gas, and makes the land subside or sink.
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