Effects of Simulated Acid Rain on Histology, Water Status and Growth of Pinus densiflora

인공산성빗물이 소나무의 조직, 수분수지 및 생장에 미치는 영향

  • 이창석 (서울여자대학교 생물학과) ;
  • 길지현 (서울여자대학교 생물학과) ;
  • 유영한 (서울여자대학교 생태연구소)
  • Published : 1998.04.01

Abstract

To clarify the effects of acid precipitates on histological damage, water status, and growth of Pinus densiflora green house experiment applyin simulated acid rain was carried out. Contact angle of water droplet on needles of P. densiflora seedlings treated with simulated acid rain of different pHs simulated acid rain was, the more rapid transpiration was. Leaf water potential after water withdrawal was also reduced rapidly in proportion to acidity of simulated acid rain. Height growth of P. densiflora seedlings treated with simulated acid rain of pH 2 decreased, while growth of seedlings treated with that of pH 3 and 4 increased comparing with that treated with normal rain of pH 5.6. pH of cultivated soil in pH 2 plot was acidified with the amount of simulated acid rain applied but that in pH 3 and 4 plots did not show any directional change. From those results, it could be interpreted that decrease of height growth in pH 2 plot was originated from multiple effects of water deficit from rapid transpiration and soil acidification. On the other hand, increased of height growth in pH 3 and 4 plots would be originated from the supply of N and S included in simulated acid rain.

Keywords

References

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