한국의 국가관리 간척지 토양의 화학성 변동: 4년 모니터링 결과
Soil Chemical Properties of Reclaimed Tide Lands Under Government Management in Korea: Results of 4-years monitoring
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BACKGROUND: The reclaimed lands for agricultural use managed by the Korean government is consisted of 17,145 hectares of lands under construction and 13,384 hectares of completed lands. In order to utilize these reclaimed lands as competitive agricultural complexes, the government is preparing to develop comprehensive development plans for multiple purposes. For rational land-use planning and soil management, information of the soil chemical properties is necessary. METHODS AND RESULTS: From 2013 to 2016, soil samples were collected from 85 representative sampling sites of the reclaimed lands and analyzed for soil chemical properties including electric conductivity (EC), pH, soil organic matter (SOM), and nutrients. The annual mean soil EC ranged from 5.1 to 8.3 dS m-1 and have continued to decrease over the years (estimation equation with EC as dependent and year as independent variable was y = 0.0736x2 - 1.4985x + 9.8305, R2 = 0.9753). The pH ranged from 7.3 to 7.6, which was higher than the optimum range (5.5~7.0) for agricultural soils. Soil organic matter (8 to 11 g kg-1) was lower level than the optimum range (20~30 kg-1). Available silicate (Av.SiO2) ranged from 169 to 229 mg kg-1, which was close to the minimum content (≥157 mg kg-1) for rice paddy field. Available phosphate (Av.P2O5) content (24~39 mg kg-1) was lower than the optimum range (80~120 mg kg-1) for rice paddy field. CONCLUSION: For efficient agricultural use of reclaimed lands under government management, our results suggest that the application of organic matter and supplying deficient nutrients as well as desalinization is required.
Abstract
BACKGROUND: The reclaimed lands for agricultural use managed by the Korean government is consisted of 17,145 hectares of lands under construction and 13,384 hectares of completed lands. In order to utilize these reclaimed lands as competitive agricultural complexes, the government is preparing to develop comprehensive development plans for multiple purposes. For rational land-use planning and soil management, information of the soil chemical properties is necessary. METHODS AND RESULTS: From 2013 to 2016, soil samples were collected from 85 representative sampling sites of the reclaimed lands and analyzed for soil chemical properties including electric conductivity (EC), pH, soil organic matter (SOM), and nutrients. The annual mean soil EC ranged from 5.1 to 8.3 dS m-1 and have continued to decrease over the years (estimation equation with EC as dependent and year as independent variable was y = 0.0736x2 - 1.4985x + 9.8305, R2 = 0.9753). The pH ranged from 7.3 to 7.6, which was higher than the optimum range (5.5~7.0) for agricultural soils. Soil organic matter (8 to 11 g kg-1) was lower level than the optimum range (20~30 kg-1). Available silicate (Av.SiO2) ranged from 169 to 229 mg kg-1, which was close to the minimum content (≥157 mg kg-1) for rice paddy field. Available phosphate (Av.P2O5) content (24~39 mg kg-1) was lower than the optimum range (80~120 mg kg-1) for rice paddy field. CONCLUSION: For efficient agricultural use of reclaimed lands under government management, our results suggest that the application of organic matter and supplying deficient nutrients as well as desalinization is required.
참고문헌 (18)
- 백승화, "새만금 간척지에서 석고, 팽화왕겨 및 제올라이트 처리가 토양 중 양이온 함량에 미치는 영향", 한국환경농학회지, 27(4), pp.321~327 (2008), 한국환경농학회
- Brady, N. C., "The Nature and properties of soils", pp.390~391 (2002), Prentice Hall
- 조재영, "우리나라 서남해안 간척지 및 간석지 토양의 화학적 특성 (Ⅱ) - 인의 형태별 함량 분포 -", 한국농공학회논문집, 48(2), pp.3~9 (2006), 한국농공학회
- 최기춘, "석문 간척지에서 돈분액비 및 석고처리가 여름철 사료작물 수량 및 토양이화학성에 미치는 영향", 한국환경농학회지, 29(4), pp.354~361 (2010), 한국환경농학회
- Kim, S. C., "Changes of some chemical constituents in different soil depth with textures of Fluvio-marine soil under assessment of reclamation duration", Korean Journal of Soil Science and Fertilizer, 20(1), pp.23~28 (1987)
- 김성조, "간척지 토양에서 석고, 팽화왕겨 및 Zeolite 처리가 토양의 입단형성에 미치는 영향", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 38(5), pp.231~237 (2005), 한국토양비료학회
- Koo, J. W., "Soil properties of reclaimed tidel lands and tidelands of western sea coast in Korea", Korean Journal of Soil Science and Fertilizer, 31(2), pp.120~127 (1998)
- 임창현, "간척지 논 토양 개량제로서 석고처리가 메탄 배출량 저감에 미치는 영향", 한국환경농학회지, 30(3), pp.243~251 (2011), 한국환경농학회
- Mueller, T., "Turnover of carbon and nitrogen in a sandy loam soil following incorporation of chopped maize plants, barley straw and blue grass in the field", Soil Biology and Biochemistry, 30(5), pp.561~571 (1998)
- Mun, H. T., "Changes of physico-chemical properties in reclaimed area by cultivation", Korean Journal of Environmental Biology, 14(2), pp.149~153 (1996)
- NIAST(National institute of Agricultural Science and Technology), "Methods of soil chemical analysis", pp.23~165 (2010), NIAST
- 서동욱, "새만금 간척지 포화상태 흙의 제염예측기법 개발", 한국농공학회논문집, 51(2), pp.29~34 (2009), 한국농공학회
- 손보균, "간척지 논의 부산석고비료 시용효과", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 40(2), pp.145~150 (2007), 한국토양비료학회
- 손재권, "새만금 전작․원예단지 후보지구 토양의 화학적 특성", 한국농공학회논문집, 51(4), pp.67~73 (2009), 한국농공학회
- 손연규, "간척지 염해답토양의 토성별 제염기간 및 단면특성변화를 기준한 분류학적 고려", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 39(2), pp.59~64 (2006), 한국토양비료학회
- Wagner, G. H., "Principles and Applications of Soil Microbiology", pp.218~258 (1999), Prentice Hall
- 양창휴, "간척지 논토양의 물리화학성 변동에 관한 연구", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 41(2), pp.94~102 (2008), 한국토양비료학회
- 류철현, "계화간척지 논토양의 물리화학적 특성 및 영농실태", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 40(2), pp.109~113 (2007), 한국토양비료학회