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석회와 유기물이 산성 산림토양의 Al과 Pb 불용화에 미치는 영향
김록영 ( Rog-young Kim ),윤정기 ( Jeong-ki Yoon ),김지인 ( Ji In Kim ),박경훈 ( Gyoung-hun Park ),윤성미 ( Sung Mi Yun ),김종모 ( Jong Mo Kim ),알렉산더쉐닝 ( Alexander Schoening ),김태승 ( Tae-seung Kim ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
The toxic effects of Al and Pb on trees, earthworms, and microorganisms in acidic forest soils are well known. As a remedial measure the surfaces of forest soils worldwide have been limed. Depending on the thickness of the organic layer on the forest soils the applied lime leaches with a delay of several years into deeper layers of the mineral soil. Furthermore, the lime applied is often neutralized in the organic layer even before it reaches mineral soil horizons. Therefore, this study was conducted to investigate the effect of liming on soil pH and immobilization of Al and Pbin acidic forest soils aftermixing the lime with the mineral soil. The dolomitelime together with the organic layeron the forest soils was strip wise mixed with the soil material to a depth of 35 cm. The investigation took place 8 months after the treatment. Soil treatment led to significant increases of the pH in the upper 35 cm of the soil. The soil of the untreated control strip was highly acidic with pH(CaCl2)of 3.4-3.7, whereas pH(CaCl2) in the treated strips were between 4.0 and 5.1. The total contents of Al and Pbin soils did not differ from the treated strip to the untreated strip. However, the mobile fractions of Al and Pb were significantly reduced from an average of 362 to 69.3 mg kg-1 for Al and 2.9 to 0.7 mg kg-1 for Pb. This improvedinitial soil conditions will probably lead to an advanced growingfor the planted trees.