지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.5
- 수록면
- 106 - 117 (12page)
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초록· 키워드
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Soil enzymes play critical roles in the decomposition of organic matter and nutrient cycling. In agricultural soils, enzyme activity is mainly affected by fertilization management such as chemical and organic fertilizers as well as temperature. In this study, the effects of fertilization regimes (i.e., organic vs. conventional) on soil enzyme activity for rice paddy under different temperature (ambient vs. elevated) were investigated through pot experiments using temperature gradient chambers. Rice plants were grown under different fertilization and temperatures for 121 days, and soil samples were collected in the middle-season drainage and the harvest seasons and analyzed for β-1,4-glucosidase (BG), β-1,4-N-acetylglucosaminidase (NAG), and acid phosphatase (AP), which involve carbon (C), nitrogen (N), and phosphorus (P) cycling, respectively. Unexpectedly, enzyme activity was rarely affected by fertilization treatments and decreased by elevated temperature, which is not in agreement with the theoretical relationship between temperature and enzyme activity. The decreased enzyme activity by elevated temperature was consistent with decreased soil water content of the soils caused by increased evapotranspiration, suggesting decreased substrate diffusion might restrict microbial and thus enzyme activity. The higher enzyme activity in the harvest than that in the middle growing season could be also attributed to the higher soil water content in the harvest season compared with the middle growing season. In addition, increased rice biomass in the later season should have provided more substrate to microbes through diffusion under high soil water conditions. Our results suggest that soil moisture may be a key factor affecting soil enzyme activity by affecting substrate diffusion.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (46)
참고문헌 신청
A’Bear DA, Jones TH, Kandeler E, Boddy L. 2014. Interactive effects of temperature and soil moisture on fungal-mediated wood decomposition and extracellular enzyme activity. Soil Biol. Biochem. 70:151-158. https://doi.org/10.1016/j.soilbio.2013.12.017
Ali S, Liu K, Ahmed W, Jing H, Qaswar M, Anthonio CK, Maitlo AA, Lu Z, Liu L, Zhang H. 2021. Nitrogen Mineralization, soil microbial biomass and extracellular enzyme activities regulated by long-term N fertilizer inputs: a comparison study from upland and paddy soils in a red soil region of China. Agronomy 11:2057. https://doi.org/10.3390/agronomy11102057
Allison SD, Treseder KK. 2008. Warming and drying suppress microbial activity and carbon cycling in boreal forest soils. Glob. Change Biol. 14:2898-2909. https://doi.org/10.1111/j.1365-2486.2008.01716.x
Allison SD, Wallenstein MD, Bradford MA. 2010. Soil-carbon response to warming dependent on microbial physiology. Nat. Geosci. 3:336-340. https://doi.org/10.1038/ngeo846
Asmar F, Eiland F, Nielsen NE. 1994. Effect of extracellular-enzyme activities on solubilization rate of soil organic nitrogen. Biol. Fertil. Soils 17:32-38. https://doi.org/10.1007/BF00418669
Ali S, Liu K, Ahmed W, Jing H, Qaswar M, Anthonio CK, Maitlo AA, Lu Z, Liu L, Zhang H. 2021. Nitrogen Mineralization, soil microbial biomass and extracellular enzyme activities regulated by long-term N fertilizer inputs: a comparison study from upland and paddy soils in a red soil region of China. Agronomy 11:2057. https://doi.org/10.3390/agronomy11102057
Allison SD, Treseder KK. 2008. Warming and drying suppress microbial activity and carbon cycling in boreal forest soils. Glob. Change Biol. 14:2898-2909. https://doi.org/10.1111/j.1365-2486.2008.01716.x
Allison SD, Wallenstein MD, Bradford MA. 2010. Soil-carbon response to warming dependent on microbial physiology. Nat. Geosci. 3:336-340. https://doi.org/10.1038/ngeo846
Asmar F, Eiland F, Nielsen NE. 1994. Effect of extracellular-enzyme activities on solubilization rate of soil organic nitrogen. Biol. Fertil. Soils 17:32-38. https://doi.org/10.1007/BF00418669
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