RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재후보

        Growth and Photosynthetic Responses of Cuttings of a Hybrid Larch (Larix gmelinii var. japonica x L. kaempferi) to Elevated Ozone and/or Carbon Dioxide

        Takayoshi Koike,Qiaozhi Mao,Naoki Inada,Korin Kawaguchi,Yasutomo Hoshika,Kazuhito Kita,Makoto Watanabe 한국대기환경학회 2012 Asian Journal of Atmospheric Environment (AJAE) Vol.6 No.2

        We studied the effects of elevated ozone ([O3]) and CO2 concentrations ([CO2]) on the growth and photosynthesis of the hybrid larch F1 (F1) and on its parents (the Dahurian larch and Japanese larch). F1 is a promising species for timber production in northeast Asia. Seedlings of the three species were grown in 16 open top chambers and were exposed to two levels of O3 (⁄10 ppb and 60 ppb for 7 h per day) in combination with two levels of CO2 (ambient and 600ppm for daytime) over an entire growing season. Ozone reduced the growth as measured by height and diameter, and reduced the needle dry mass and net photosynthetic rate of F1, but had almost no effect on the Dahurian larch or Japanese larch. There was a significant increase in whole-plant dry mass induced by elevated [CO2] in F1 but not in the other two species. Photosynthetic acclimation to elevated [CO2] was observed in all species. The net photosynthetic rate measured at the growing [CO2] (i.e. 380ppm for ambient treatment and 600 ppm for elevated CO2 treatment) was nevertheless greater in the seedlings of all species grown at elevated [CO2]. The high [CO2] partly compensated for the reduction of stem diameter growth of F1 at high [O3]; no similar trend was found in the other growth and photosynthetic parameters, or in the other species. We studied the effects of elevated ozone ([O3]) and CO2 concentrations ([CO2]) on the growth and photosynthesis of the hybrid larch F1 (F1) and on its parents (the Dahurian larch and Japanese larch). F1 is a promising species for timber production in northeast Asia. Seedlings of the three species were grown in 16 open top chambers and were exposed to two levels of O3 (⁄10 ppb and 60 ppb for 7 h per day) in combination with two levels of CO2 (ambient and 600ppm for daytime) over an entire growing season. Ozone reduced the growth as measured by height and diameter, and reduced the needle dry mass and net photosynthetic rate of F1, but had almost no effect on the Dahurian larch or Japanese larch. There was a significant increase in whole-plant dry mass induced by elevated [CO2] in F1 but not in the other two species. Photosynthetic acclimation to elevated [CO2] was observed in all species. The net photosynthetic rate measured at the growing [CO2] (i.e. 380ppm for ambient treatment and 600 ppm for elevated CO2 treatment) was nevertheless greater in the seedlings of all species grown at elevated [CO2]. The high [CO2] partly compensated for the reduction of stem diameter growth of F1 at high [O3]; no similar trend was found in the other growth and photosynthetic parameters, or in the other species.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼