1Department of Environmental Ecology, Graduate School of Environmental and Life Science, Okayama University, 2-1-1 Tsushima-naka, Kita-Ku, Okayama, 700-8530, Japan
2Institute of Biochemical Technology and Environment, Vinh University, 182 Le Duan Str., Vinh City, 4300, Vietnam
*Corresponding Author: K.H.T. Dinh, Department of Environmental Ecology, Graduate School of Environmental and Life Science, Okayama University, 2-1-1 Tsushima-Naka, Kita-Ku, Okayama, 700-8530, Japan, Email: haodtkim@vinhuni.edu.vn
Online published on 1 October, 2024.
Land use and management practices (LUMPs) have been accelerated globally to serve the increasing socioeconomic requirements in recent decades.
This study focuses to assess the impacts of the LUMPs on the properties and composition of soil in the Lam River Basin (LRB), Vietnam based on analysis of ninety-six soil samples collected in the soil profiles (0_60 cm).
The results indicated that the sand and clay ratios (34.0∼35.7% and 16.2∼19.9%) and bulk density (BD) (1.07±0.05~1.34±0.06 Mg m-3) in the natural forest lands (NFLs) were lower and higher perturbed than the plantation forest lands (PFLs) (31.1∼ 51.5%, 5.7∼38.2% and 0.86±0.03∼1.12±0.05 Mg m-3) in the 0-20 cm topsoil layer. The soil texture is mainly sandy clay to clay loam and the BD tends slightly increase in the topsoil layer, then decrease in the 20-60 cm subsoil layer. There is no difference in soil pH between collected soil samples (CSSs) and tends to increase with increasing the subsoil layer. The base cations (BCs) (Ca2+, K+, Mg2+: 0.01∼0.29, 0.06∼0.11 and 0.06∼0.07 Cmolc kg-1) and total organic contents (TOCs) (total carbon (TC), total nitrogen (TN), total phosphorus (TP): 24.11; 2.80 and 0.19 g kg-1) of the NFLs are higher than those of the CSSs (TC, TN, TP: 14.37∼23.91, 1.62∼2.28 and 0.08∼0.17 g kg-1) in the topsoil layer while these values were not different in the topsoil layer.
Degradation, Forest land, Land-use management, Soil function, Texture
