"For Countermeasures against Sugi Pollinosis in Forest Science", The Estimation of the Pollen Source Areas of Cryptomeria japonica D. Don which Have High Contributions to the Japanese Metropolitan Region.

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  • 「スギ花粉発生源対策のために」都市域への影響の高いスギ花粉放出源の推定
  • 都市域への影響の高いスギ花粉放出源の推定
  • トシイキ エ ノ エイキョウ ノ タカイ スギ カフン ホウシュツ ゲン ノ スイテイ
  • The Estimation of the Pollen Source Areas of Cryptomeria japonica D. Don which Have High Contributions to the Japanese Metropolitan Region

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Abstract

By using a predicting model for pollen dispersal of Cryptomeria japonica, which was developed by the present authors, we estimated the Cryptpmeria pollen source areas which have the high contributions to the Japanese metropolitan region. For the evaluation criteria, we used two indices; the average pollen concentration during pollen dispersal period, and the pollen exposure index (pollen concentration multiplied by the population in that area). For the smaller target region which did not contain any pollen source (the region within the 10 km-circle around Tokyo Station, with the population of more than five million people), the similar results were obtained when using both indices. However, for the greater Metropolitan region (90 km from east to west and 80 km from north to south, including Tokyo and Yokohama city, with the population of 30 million people), the pollen sources within this region were estimated to have the extremely high contributions to this region when using the pollen concentration as the evaluation criterion. Moreover, the results of different sample years differed from each other, for both indices for evaluation criteria.

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