積雪寒冷地のリンゴ園地における冬季地温の特色  [in Japanese] Features of Winter Soil Temperature on an Apple Orchard in a Cold Snowy Region  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

<p>青森県のリンゴ園地では, 春の農作業と農地保全の観点から, 冬から春に変わる融雪・消雪期の地温が重要な意味を有する.そこで, 本研究では冬季(11月〜4月上旬)の地温分布の特性を明らかにし, この時期の地温分布と融雪・消雪期の地温の関連を解明することを目的に7年間にわたりモニタリング調査を実施した.その結果, (1) 調査園地の冬季の地温は, 雪の断熱効果によって変動が小さく0℃以上に保たれる, (2) 調査期間中の積雪下の地温は, 上層(8cm 深)<中層(32cm 深)<下層(64cm 深)のように下層ほど高くなる場合(I型)が5年間, 上層の地温がI型に比べ高く中層の地温とほぼ同じ状態が融雪期まで継続し, 上層≒中層<下層の分布を示す年(II型)が2年間認められた, (3) II型の地温分布は, 初冬の気温が高く初雪から根雪になる期間が短い場合に生じる, ことが分かった.</p>

<p>In apple production in the cold snowy region, Aomori prefecture, changes of soil temperature in the snow-melting period are important for farm work and field conservation. So, we aimed to clarify the characteristics of soil temperature in an apple orchard in this period. We have been monitoring soil temperature of the orchard for 7 years, particularly during the winter seasons. The results are: 1) There was little fluctuation in soil temperature, which was maintained above 0℃, due to the fact that the accumulated snow functions as insulation. 2) During the investigated periods, two types of soil temperature profile were found. In the first type, the nearer the soil layer was from the surface, the lower the temperature was; we called this Type I. Meanwhile, there were 2 years in these periods in which the shallow layer (8cm) was maintained almost as warm as the middle layer (32cm) until the snow-melting. We called this Type II. 3) This feature of Type II was caused in years when air temperature was relatively high in the beginning of the winter, and when there was only a short time lag between the first snow fall and when we started to have lingering snow.</p>

Journal

  • Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering

    Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 86(2), II_77-II_83, 2018

    The Japanese Society of Irrigation, Drainage and Rural Engineering

Codes

  • NII Article ID (NAID)
    130007527711
  • NII NACSIS-CAT ID (NCID)
    AA12240517
  • Text Lang
    JPN
  • ISSN
    1882-2789
  • NDL Article ID
    029475999
  • NDL Call No.
    Z18-365
  • Data Source
    NDL  J-STAGE 
Page Top