Closed chamber를 이용한 토양 N₂O배출량과 주요 토양 인자들과의 상관성 = The Relevance of Soil N₂O Emissions Measured by a Closed Chamber Technique on the Physico-chemical Soil Parameters

다국어 초록 (Multilingual Abstract)

Nitrous oxide (N₂O) has been known as an Important trace gas due to the greenhouse gas and the major source of stratospheric oxide of nitrogen (NO) Sails the major source of N₂O in nature The physicochemical characteristics of soils affect the emission of N₂O from soil These physicochemical parameters are soil temperature, soil temperature, and Soli N content. Since these parameters are correlated to the flux of N₂O from soil individually and compositely, there still remain many unknowns 10 the mechanism to produce N₂O in soil and the roles of, such physicochemical parameters which affect the soil N₂O emission Soil N₂O fluxes were measured at different level In water filled pore space (WFPS), soil temperature and soil N contents from the same amounts of soils which were sampled from agriculturally managed upland field In a depth of ~30cm at Kunsan The soil N₂O flux measurements were conducted In a laboratory with a closed flux chamber system The optimum soil moisture and soli temperature were observed at 60% of WFPS and ~l3°C The sod N₂O flux increased as soil N contents increases during the whole experimental hours (up to 48 hours) However, average N₂O flux decreased after ~30 hours when organic carbon was mixed with nitrogen In the sample soils It is suggested that organic carbon could be Important for the emission of N₂O, and that the ratio of N to C needs to be identified in the process of N₂O soil emission.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 배출량 측정챔버 및 측정방법
• 3. 결과 및 논의
• 4. 결론 및 고찰
• 참고문헌

참고문헌 (Reference)

1 "챔버를 이용한 농작지로부터의 기체배출량 측정과 배출특성 연구: 일산화질소(NO)와 아질산가스(N2O)의 배출량 산정" 17 (17): 203-212, 2001

2 "밭 토양으로부터 아질산(N2O)기체의 배출량 측정과 배출특성" 19 (19): 529-540, 2003

3 "The influence of nitrogen oxides on the atmospheric ozone content. Q.J.R. Meteorol. Soc" 96 : 320-325, 1970

4 "The global sources of nitrous oxide. J. Geophys. Res." 97 : 14651-14660, 1992

5 "Surface flux measurements of CO2 and N2O from a dried rice paddy in Japan during a fallow winter season" 52 : 416-422, 2002

6 "Role of denitrifier diversity in rates of nitrous oxide consumption in a terrestrial ecosystem." 33 : 297-310, 2001

7 "Radiative Forcing of Climate Change-Intergovernmental Panel on Climate Change" 1994

8 "Nitrous oxide emission by nitrification and denitrification in different soil types and at different soil moisture contents and temperatures" 4 : 5-14, 1996

9 "N2O emissions from humid tropical agriculture soils : Effects of soil moisture and nitrogen availability" 33 : 1077-1093, 2001

10 "Mineralization and denitrification in upland, nearby saturated and flooded subtropical soil. II. Effect of organic manures varying in N content and C : N ratio." 31 : 168-174, 2001

11 "Microbial production and consumption of nitrate in an annual grass. In Printed and bound in Great Britain at the University Press Microbial processes of production and consumption of nitric oxide" 1990

12 "Low temperature control of soil denitrifying communities : kinetics of N2O production and reduction" 2002

13 "Kim, D.S. and J.C. Kim (2002) Soil nitric and nitrous oxide emissions from agricultural and tidal flat fields in southwestern Korea." 1 : 359-369, 2002

14 "Immediate and adaptation temperature effects on nitric oxide production and nitrous oxide release from nitrification and denitrification in two soils" 30 : 33-40, 1999

15 "Fluxes of nitrous oxide and nitric oxide from terrestrial ecosystems. American Society for Microbiology" d.c : 219-235, 1991

16 "Filed scale laboratory study of factors affection NO emission from a rye stubble filed on sandy loam soil" 25 : 366-371, 1996

17 "Contributions of agroecosystems to global climate change. In Agroecosystem Effects on Radatively Importnat Trace Gases and Global Climate Change. L.A. Harper" 1993

18 "Chemistry of the Natural Atmosphere. Academic Press. Inc." 1-988, 1988

19 "Atmosphericemissions and trends of nitrous oxide deduced from 10 years of ALE-GAGE data. J. Geophys. Res. 95" 18369-18385, 1990

20 "A process-oriented model of N2O and NO emissions from forest soils. 1. Model development" 105 (105): 4369-4384, 2000

21 "A process-oriented model of N2O and NO emissions from forest soils, 2. Sensitivity analysis and validation." 105 (105): 4385-4398, 2000