Wood‐Biochar Influence on Rill Erosion Processes and Hydrological Connectivity in Amended Soils

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(2)

Published: Feb. 1, 2025

ABSTRACT Although there is increasing interest in biochar as a soil amendment, its antierosive effectiveness still uncertain. This investigation aims at evaluating how wood‐biochar affects rill erosion and hydrological connectivity amended soils. In this paper, first, plot experiments were performed entering clear inflow into two rills, named 3 5 , incised with an initial concentration BC weight of 3% 5%, respectively. For each rill, terrestrial photogrammetry was used to obtain the Digital Elevation Models (DEM) before after experimental runs, consequent DEM difference (DoD) calculate total volume eroded mixture (sediment biochar), while three samples outflow discharge collected determine sediment rates. Then, small laboratory soil, biochar, mixtures different (1%, 3%, 10%, 30%) size distribution pores, thus measure structural functional connectivity, by nuclear magnetic resonance (NMR) relaxometry fast field cycling (FFC) layout. The DoDs highlighted that for lower than . Moreover, condition yielded higher percentage mixture. NMR measurements demonstrated addition increases micropores mesopores, macro‐pore component never dominant. Biochar concentrations greater 5% do not produce appreciable changes pore inside improves up = 5%. range 0%–3%, FCI decreased increased. conclusion, target allows mitigation phenomena, favours improvement does appreciably modify connectivity.

Language: Английский

Evaluating and modeling rill detachment and resistance in different rates and particle sizes of biochar application on the Loess Plateau of China

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133441 - 133441

Published: May 1, 2025

Language: Английский