2021, 40(3): 13-21.
doi: 10.12390/jbr2022002
Abstract:
In order to study the impacts of intensive management on soil physical properties of Dendrocalamopsis oldhami forest, samples of tillage layers (0-20 cm) of three soil types, i.e., sandy red, yellowish red and red, for bamboo planting were collected. A series of soil parameters were measured, including bulk density, total porosity, capillary porosity, non-capillary porosity, natural water content, field water capacity, capillary water content, saturated water content and percolation rate. Results showed that because of intensive management, the bulk density and field water capacity of sandy red soil in bamboo forest increased by 1.22% and 1.80%, respectively, while the total porosity, non-capillary porosity, natural water content, capillary water content and saturated water content decreased by 8.16%, 39.23%, 14.61%, 2.94% and 7.94%, respectively. For yellowish red soil, the intensive management caused the natural water content to increase by 7.38%, and the bulk density, total porosity, capillary porosity, non-capillary porosity, field water capacity, capillary water content and saturated water content decreased by 1.44%, 6.86%, 6.04%, 13.26%, 5.66%, 1.99% and 3.01%, respectively. And for red soil, the intensive management increased the total porosity and non-capillary porosity by 1.08% and 104.54%, respectively, but decreased capillary porosity, natural water content, field water capacity and capillary water content by 4.52%, 11.41%, 6.12% and 2.28%, respectively. Additionally, the K10's of sandy red soil, yellowish red soil and red soil were elevated by 47.37%, 54.29% and 22.73% respectively, indicating that intensive management led to an increase in the soil percolation rate.
