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Survey of Air-borne Allergic Pollens in North China: Contamination with Ragweed

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This paper presents the survey of 9 districts in North China with an object of understanding more about geographical distribution of air-borne pollens in relation with allergic diseases in the upper respiratory system. The findings prove to be a good guidance, beneficial both to the physicians who are treating the cases and to the patients who are receiving the treatments.

The components of the peaks of the curves in Spring are nearly the same, they are usually formed of Ulmus (elm), Populus (poplar) and Selix (willow), with the exception that in the Spring curve of Lanzhou, Biota Orientalis dominates and at Huohot, Ulmus (elm) dominates.

Like in the report on air-borne pollens in Peking, made by C. T. Chang as well as in our report on air-borne pollens survey in 9 districts in North China, Artemisia (sage) is found to be the chief component of the Summer-Autumn curve and the major offender in Summer-Autumn seasons in the etiology of upper respiratory allergic diseases.

In contradistinction to Artemisia (sage), there are two exceptions such as in south China: (1) In Shenghai, Ricinus (castor bean) and Humulus (Hops) are found to be the major offender instead of Artemisia (sage) and (2) At Kwangzhou, Kwangdong province Wood Ephedra, Wild Amaranth (pigweed) are also found to be major offenders instead of Artemisia (sage).

In addition to the major offender, Artemisia (sage) which was said to be dominant in Shenyang (Moukden) of Laoning province by Yuchin (cited from POLLINOSIS by Shih Ruei, Ragweed was first discovered at Shenyang (and Tehling, Fushuen and Dandong). A question is raised "How it came to China"? Preventive measures must be taken to eradicate it, otherwise it certainly will spread all over China.

Document Type: Research Article


Publication date: 1986-03-01

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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