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무기 결합재의 처리가 간척지 토양의 입단형성에 끼치는 영향
손재권,최진규,조재영,Son, Jae-Gwon,Choi, Jin-Kyu,Cho, Jae-Young 한국농공학회 2009 한국농공학회논문집 Vol.51 No.4
Soil aggregation is an important part of influencing the soil behaviors in reducing rainfall-runoff and soil erosion, aeration, infiltration, and root penetration. Some inorganic materials such as clay minerals, Fe and Al oxides/hydroxides, and calcium carbonate can act as cementing agents within macroaggregates. The objective of this study was to determine the effects of different cementing agents (Fe, Mn, and Al) on soil aggregate formation in reclaimed tidelands. Water stable aggregate ratio and MWD (mean weight diameter) were higher in iron dioxides treatment than two other treatments. This result indicates significant correlation between soil aggregate formation and iron dioxides.
농업유역 비점오염 관리를 위한 동진강 행정교 유역의 수문·수질 모니터링
손재권,손태호,최진규,조재영,고남영,오진휴,Son, Jae-Gwon,Son, Tae-Ho,Choi, Jin-Kyu,Jo, Jae-Young,Goh, Nam-Young,Oh, Jin-Hyu 한국농공학회 2012 한국농공학회논문집 Vol.54 No.4
This study was performed to investigate the stream water quality characteristics in Hengjeong Bridge Basin of Dongjin River during twelve months from October, 2010 to September, 2011. Also, pollutant loads were calculated on the basis of the water quality and runoff results. The results showed that ranges of water temperature, pH and EC were $6.2{\sim}23.90^{\circ}C$, 6.32~7.78, $84.4{\sim}126.5{\mu}S/cm$ respectively. The Concentration of DO, BOD, COD, SS, Tot-N and Tot-P were observed as 6.80~9.20 mg/L, 0.40~1.60 mg/L, 1.96~4.41 mg/L, 59.60~142.20 mg/L, 1.28~3.52 mg/L, 0.001~0.07 mg/L respectively. Tot-N showed correlativity with BOD, and Tot-P showed correlativity with SS. The runoff pollutant loading of Tot-N and Tot-P were 117.94 kg/ha and 2.06 kg/ha respectively, in Hengjeong bridge of Dongjin river watershed. In the case of the correlativity between runoff pollutant loads and concentrations, Tot-N and Tot-P show low significant relationships.
간척지 염해토양의 Phytoremediation에 의한 제염
손재권,송재도,신원태,이수환,류진희,조재영 한국유기농업학회 2016 韓國有機農業學會誌 Vol.24 No.3
Salted-affected soil is a major environmental constraint with severe negative impacts on agricultural productivity and sustainability in reclaimed tidelands. This review focuses on the phytoremediation of reclaimed tidelands. We address the process of phytoremediation of these soils, comparison of phytoremediation with other amelioration approaches, driving forces contributing to the process, selection of phytoremediation crops, and the role of cropping in securing environmental integrity under salt-affected soils.
새만금 간척지 밭 토양의 관개 방식별 관개용수량과토양 용적수분함량 변화 분석 연구
손재권,송재도 한국농공학회 2023 한국농공학회논문집 Vol.65 No.2
This study was conducted to analyze changes of irrigation water and soil volumetric water content by irrigation method of field soil in Saemangeumreclaimed tideland. The main test irrigation methods was surface drip irrigation, sprinkler irrigation, and sub drip irrigation. In addition, the correlationbetween irrigation amounts and crop yield by irrigation method was investigated. For soil volumetric water contents increases by 25%, surface dripirrigation took 1.5 hour, sprinkler irrigation took 2.0 hours, and sub drip irrigation took 3.0 hours. As a result of analyzing the irrigation amountsaccording to the yield, the surface drip irrigation was 2.66 mm/day in the seedling stages, 3.31 mm/day in the vegetative growth stages, and 5.09mm/day in the flowering stages. Sprinkler irrigation was 2.90 mm/day in the seedling stages, 3.87 mm/day in the vegetative growth stages, and 7.11mm/day in the flowering stages. Sub drip irrigation was 2.42 mm/day in the seedling stages, 3.09 mm/day in the vegetative growth stages, and 4.87mm/day in the flowering stages. It was analyzed that there was a statistically significant difference in irrigation amounts by fresh weight and irrigationmethod (F=4.002, p=0.022), and irrigation amounts by dry weight and irrigation method (F=3.499 p=0.034). Surface drip irrigation was judged to bemore appropriate than sprinkler irrigation or sub drip irrigation for field crops in Saemangeum reclaimed land.
손재권,정병엽,장정렬,조재영 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.5
The occurrence, distribution, and ecological risk assessmentof 15 polycyclic aromatic hydrocarbons (PAHs) were investigatedin the Dongjin River water system from December 2010 toOctober 2012. Among the detected PAHs, the mean concentrationof acenaphthylene was the highest. Other PAHs were detected atvery low concentrations. The detection frequencies and concentrationsof the 15 PAHs were generally higher in the winter season,indicating low water flow conditions and low temperature. Theresults of a survey of the origin of the PAHs using the Phe/Antratio and Fla/Pyr ratio clearly indicated a pyrogenic source. Therisk quotient (RQ) values for the 15 PAHs in the Dongjin Riverwater system were below 0.01–0.1, indicating little risk to therelevant sensitive aquatic organisms, including green algae anddaphnids, by the target compounds. In particular, the RQ values ofmost of PAHs exceeded 0.1 for fish in all of the seasons at mostof the sampling sites, which indicated that the fish were exposedto medium risk.
손재권,구자웅,최진규,Son Jae Gwon,Koo Ja Woong,Choi Jin Kyu 한국관개배수위원회 2001 한국관개배수논문집 Vol.8 No.1
This study was Performed to analyze desalinization effects of gypsum treatments in reclaimed tidal lands and to obtain the basic data for developing prediction techniques of desalinization to be applicable to reclaimed tidal lands at the beginning stage.