Assessing the Suitability of Sediment Soil to Be Reused by Different Soil Treatments for Forest Agriculture

Yeonggeun Song, Sukwoo Kim, Haeun Koo, Hyeonhwa Kim, Kidae Kim, Jaeuk Lee, Sujin Jang and Kyeong Cheol Lee ()
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Yeonggeun Song: Department of Forest Environment Science, Jeonbuk National University, Jeonju 54896, Republic of Korea
Sukwoo Kim: Division of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
Haeun Koo: Department of Crops and Forestry, Korea National University of Agriculture and Fisheries, Jeonju 54874, Republic of Korea
Hyeonhwa Kim: Department of Crops and Forestry, Korea National University of Agriculture and Fisheries, Jeonju 54874, Republic of Korea
Kidae Kim: Department of Forestry and Environmental Systems, Kangwon National University, Chuncheon 24341, Republic of Korea
Jaeuk Lee: Geologic Hazards Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
Sujin Jang: Division of Decentralization, Gangwon Institute, Chuncheon 24461, Republic of Korea
Kyeong Cheol Lee: Department of Crops and Forestry, Korea National University of Agriculture and Fisheries, Jeonju 54874, Republic of Korea

Sustainability, 2023, vol. 15, issue 15, 1-18

Abstract: In order to determine the suitability of reusing the sediment deposited in the upper part of the dam as soil for growing forest products, a total of eight treatment plots were formed by mixing cultivated soil, compost, and biochar with the sediment in a volume ratio. Generally, the soil fertility of SS100 was relatively lower than that of CS, with Av. P 2 O 5 being only 22%. SS70 and SS50 increased soil physicochemical properties including OM, exchangeable cations, CEC, and BS by 1.1–2.9 times more than SS100, thus, A. scaber Thunb. treated in SS70 and SS50 showed increased photosynthetic parameters including A, V cmax , J max , and the growth characteristics, especially in the aboveground part, were 20% and 31% higher than the SS100, respectively. Furthermore, A. scaber in CS, SS50, Bc10, and Comp had higher PI abs , DFI abs , and SFI abs while maintaining lower V K /V J after 10 days of drought stress, Comp and Bc10, in particular, had a high Y(NPQ) and a low Y(NO). Bc5 and Bc10, revealed no discernible differences in soil physicochemical properties, nonetheless, A. scaber in Bc10 demonstrated relatively high drought tolerance. Overall, CS, SS50, and Comp had relatively well-balanced plant growth, and drought tolerance was found to be higher in CS, Comp, SS50, and Bc10, which is thought to have higher water-holding capacity and soil fertility. As a result, if appropriate treatment methods are established, such as mixing sediment soil with cultivated soil at a one-to-one ratio or adding compost, increase the public value of forests by promoting activities such as watershed conservation, soil runoff prevention, and reducing the financial burden associated with sustainable forestry management and SS50 is recommended as the most cost-effective method.

Keywords: soil reuse; check dam; sediment soil; Aster scaber; drought tolerance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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