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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Recent warming by latitude associated with increased length of ragweed pollen season in central North America
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Recent warming by latitude associated with increased length of ragweed pollen season in central North America

机译：北美中部近期变暖与豚草花粉季节延长有关

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摘要

A fundamental aspect of climate change is the potential shifts in flowering phenology and pollen initiation associated with milder winters and warmer seasonal air temperature. Earlier floral anthesis has been suggested, in turn, to have a role in human disease by increasing time of exposure to pollen that causes allergic rhinitis and related asthma. However, earlier floral initiation does not necessarily alter the temporal duration of the pollen season, and, to date, no consistent continental trend in pollen season length has been demonstrated. Here we report that duration of the ragweed (Ambrosia spp.) pollen season has been increasing in recent decades as a function of latitude in North America. Latitudinal effects on increasing season length were associated primarily with a delay in first frost of the fall season and lengthening of the frost free period. Overall, these data indicate a significant increase in the length of the ragweed pollen season by as much as 13-27 d at latitudes above ～44°N since 1995. This is consistent with recent Intergovernmental Panel on Climate Change projections regarding enhanced warming as a function of latitude. If similar warming trends accompany long-term climate change, greater exposure times to seasonal allergens may occur with subsequent effects on public health.
机译：气候变化的一个基本方面是与较温和的冬季和较暖的季节性气温相关的开花物候和花粉萌发的潜在变化。反过来，较早的花期花粉又被认为通过增加花粉接触引起过敏性鼻炎和相关哮喘的时间而在人类疾病中起作用。然而，较早的花期启动不一定改变花粉季节的持续时间，并且迄今为止，还没有证明花粉季节长度具有一致的大陆趋势。在这里，我们报告说，近几十年来，豚草（Ambrosia spp。）花粉季节的持续时间一直在增加，这是北美纬度的函数。对增加的季节长度的纬度影响主要与秋季初霜的延迟和无霜期的延长有关。总体而言，这些数据表明，自1995年以来，在〜44°N以上的纬度上，豚草花粉季节的长度显着增加了13-27 d。纬度函数。如果长期的气候变化伴随着类似的变暖趋势，则可能会出现更多的季节性过敏原暴露时间，进而对公共健康产生影响。

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  • 作者

    Lewis Ziska; Kim Knowlton; Christine Rogers; Dan Dalan; Nicole Tierney; Mary Ann Elder; Warren Filley; Jeanne Shropshire; Linda B. Ford; Curtis Hedberg; Pamela Fleetwood; Kim T. Hovanky; Tony Kavanaugh; George Fulford; Rose F. Vrtis; Jonathan A. Patz; Jay Portnoy; Frances Coates; Leonard Bielory; David Frenz;

  • 作者单位

    Crop Systems and Global Change Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD 20705;

    Health and Environment Program, Natural Resources Defense Council, and Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032;

    Environmental Health Sciences, University of Massachusetts, Amherst, MA 01003;

    Allergy and Asthma Care Center, Fargo, ND 58103;

    Allergy and Asthma Specialists, Minneapolis, MN 55402;

    Allergy and Asthma Specialists, Minneapolis, MN 55402;

    Oklahoma Allergy and Asthma Clinic, Oklahoma City, OK 73104;

    Allergy and Asthma Specialists, Minneapolis, MN 55402;

    Asthma and Allergy Center, Omaha, NE 68123;

    Hedberg Allergy and Asthma Center, Rogers, AR 72758;

    Hedberg Allergy and Asthma Center, Rogers, AR 72758;

    Allergy and Asthma Center of Georgetown, Georgetown, TX 78628;

    Allergy Associates, La Crosse, WI 54602;

    Allergy Associates, La Crosse, WI 54602;

    Nelson Institute for Environmental Studies and Department of Population Health Sciences, University of Wisconsin, Madison, WI 53706;

    Allergy Associates, La Crosse, WI 54602;

    Section of Allergy, Asthma, and Immunology, Children's Mercy Hospital, University of Missouri-Kansas City School of Medicine, Kansas City, MO 64108;

    Aerobiology Research Laboratories, Nepean, ON, Canada K2E 7Y5;

    Center for Environmental Prediction, Rutgers University, New Brunswick, NJ 08901;

    HealthEast Care System, St. Paul, MN 55102;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    aerobiology; allergies; global warming;

    机译：航空生物学过敏全球暖化;

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