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한국생태학회 / v.33, no.2, 2010년, pp.133-139 
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( Effects of elevated CO2 on growth of Pinus densiflora seedling and enzyme activities in soil ) |
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| 초 록 |
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| Atmospheric $CO_2$ concentrations have increased exponentially over the last century and, if continued, are expected to have significant effects on plants and soil. In this study, we investigated the effects of elevated $CO_2$ on the growth of Pinus densiflora seedling and microbial activity in soil. Three-year-old pine seedlings were exposed to ambient as well as elevated levels of $CO_2$ (380 and 760 ppmv, respectively). Growth rates and C:N ratios of the pine seedlings were also determined. Dissolved organic carbon content, phenolic compound content, and microbial activity were measured in bulk soil and rhizosphere soil. The results show that elevated $CO_2$ significantly increased the root dry weight of pine seedling. In addition, overall N content decreased, which increased the C:N ratio in pine needles. Elevated $CO_2$ decreased soil moisture, nitrate concentration, and the concentration of soil phenolic compounds. In contrast, soil enzymatic activities were increased in rhizosphere soil, including ${eta}$-glucosidase, N-acetylglucosaminidase and phosphatase enzyme activities. In conclusion, elevated $CO_2$ concentrations caused distinct changes in soil chemistry and microbiology. |
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| 키워드 |
| elevated $CO_2$;enzyme activity;Pinus densiflora;soil; |
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Journal of Ecology and Field Biology / v.33, no.2, 2010년, pp.133-139
한국생태학회
ISSN : 1975-020X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201016264960307)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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