Difference in Soil Biogeochemical Properties of Agricultural Highland by Topographical Characteristic and Soil Management

Abstract

In agricultural highland, soil properties change over time due to soil management methods, soil erosion, and cultivation. The objective of this study was to investigate the differences in soil properties according to land management in agricultural highland. As a result of the soil analysis, Anbandegi, Maebongsan, Yeongwol, and Jeongseon, located near the top of the mountain, had low bulk densities, and organic matter, CEC, exchangeable cation, water stable aggregation rate, and dehydrogenase activity, were relatively higher than those of Daegwallyeong and Punch bowl. In the Daegwallyeong and Punch bowl, saprolite soil was periodically piled to replace eroded top-soil, and as a result, soil characteristics differed significantly from those located near the top of the mountain. In the principal component analysis result, organic matter showed the largest eigenvalue in PC1, and pH was selected as PC2. The distribution of soil clusters by sampling point was PC1, and Daegwallyeong and Punch bowl were classified differently from highland areas near the top of the mountain, and coastal basins and Daegwallyeong were classified by PC2. In conclusion, highland soil showed different soil properties for each region, which was the result of differences according to the soil management methods. And considering the relationship between soil characteristics, it was confirmed that organic matter was the most important factor in the soil management methods.

Comparative Analysis of Microbial Community Characteristic of Acidic and Neutral Soils in Korean Orchards

“…담수 환경인 우리나라 벼논은 혐기 조건에서 많이 발견되는 Chloroflexota의 상대풍부도 가 높았고 밭, 과수원, 시설재배지에 비해 미생물 네트워크가 더 많이 형성되는 것으로 밝혀졌다 (Petriglieri et al, 2018;Lee et al, 2020). 토양 유형 뿐만 아니라 토양 관리 방법에 따라 달라지는 토양 화학성은 미생물 군집 변화에 상 당한 영향을 미친다고 잘 알려져 있다 (Aziz et al, 2013;Bartram et al, 2014;Yoon et al, 2022;Kim et al, 2023). 이 전 연구들은 pH, 전기 전도도, 유기물 함량, 가용성 인산 등 변화에 따라 미생물 군집 구성이 달라지는 것을 확인하였 고 (Chodak et al, 2015;Kim et al, 2016;Xu et al, 2020), 특히 pH는 다른 이화학성에 비해 미생물 군집 구조와 다양 성에 큰 영향을 미친다 (Lauber et al, 2009;Rousk et al, 2010;Kim et al, 2016;Lee et al, 2020).…”