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| ▒ Home | > | | 연구정보 (Information) | > | 국내연구정보 (Domestic information) |
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| Effects of Temperature, Light and Water Stress on Photosynthesis and Dark Respiration Rates |
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| 글쓴이 : 관리자
날짜 : 08-09-06 13:29
조회 : 10168
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Studies on the Productivity of Korean White Pine forest (I) -Effects of Temperature, Light and Water Stress on Photosynthesis and Dark Respiration Rates of Leaves- <Jour. Kor. For. Soc. 55:55-58 1982> Author sshan@kangwon.ac.kr
This study is to investigate the effects of temperature, light and water deficit on apparent phytosynthesis rate (Pn)and dark respiration rate (Rd) of leaves in the series of studies dealing with primary productivity of korean white pine forest. The results obtained are as follows: 1) The light saturation for Pn occurred at about 40 Klux, and light compensation at 1.0 to 1.3 Klux. 2) The Pn of current leaves was highest, and Pn decreased with increasing leaf age. 3) The Rd on the response of temperature in February was about two times value in all of the temperature ranges as compared with the ones in August. 4) The incipient water stress, above which Pn and Rd declined from 100%, was different for Pn (-l0 bar) and Rd (0 bar). The high water stress required to reduce Pn to nearly O% at -24 bar, but Rd was only 43% at -24 bar. 5) The optimum temperature range for Pn showed about 15 to 18℃ in February and 23 to 26℃ in August.
Key words: productivity of Korean white pine forest
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