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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Profile of Dolores R. Piperno
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Profile of Dolores R. Piperno

机译：Dolores R. Piperno的个人资料

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摘要

Plants decay so quickly in the steamy warmth of the tropics that it is often fruitless for botanical archaeologists to search the soils there for the fossilized remains of the seeds and roots traditionally used in their work. Dolores R. Piperno, elected to the National Academy of Sciences in 2005, solved that dilemma by pioneering the use of different kinds of plant fossils. Her work with phytoliths and other microscopic remains shows that even plants in the tropics leave behind telltale signs of their presence thousands of years later.rnPhytoliths, tiny inclusions of solid silica formed within plant cells that help to protect plants from herbivores, offer a window into agricultural and environmental history in the tropics and elsewhere. In her Inaugural Article in this issue of PNAS, Piperno, a scientist at the Smithsonian Tropical Research Institute (Panama) and the National Museum of Natural History (Washington, DC), uses phytoliths, pollen, and charcoal evidence retrieved from lakes to reconstruct the environmental and agricultural history of Mexico's Central Balsas Valley. The region is known as the possible origin of maize domestication approximately 9,000 years ago.
机译：植物在热带炎热的高温中腐烂得如此之快，以至于植物考古学家在那里的土壤中搜寻传统上用于工作的种子和根的化石遗骸通常是徒劳的。 2005年当选为美国国家科学院院士的Dolores R. Piperno通过率先使用各种植物化石解决了这一难题。她对植物石板和其他微观遗骸的研究表明，即使在热带地区，数千年后的植物也留下了存在的明显迹象。植物石板是植物细胞内形成的微小的固体二氧化硅包裹体，有助于保护植物免受草食动物的侵害。热带和其他地区的农业和环境史。史密森尼热带研究所（巴拿马）和国家自然历史博物馆（华盛顿特区）的科学家Piperno在本期PNAS的就职演说中，使用了从湖中回收的植石，花粉和木炭证据来重建墨西哥中部巴尔萨斯山谷的环境和农业历史。该地区被称为大约9000年前玉米驯化的可能起源。

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