Impacts of Subtropical Forest Type Conversion on Soil Hydrophysical Characteristics

• Published in: Shui tu bao chi xue bao Vol. 39; no. 2; pp. 125 - 134
• Main Authors: ZHENG Lixuan, WU Fuzhong, YANG Qiao, PENG Yan, AN Nannan, JIANG Hualing, ZHENG Yuchen, YUE Kai
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Journal of Soil and Water Conservation 01.04.2025
• Subjects: forest type conversion; hydrophysical parameters; soil matric potential; soil permeability; soil porosity
• ISSN: 1009-2242
• DOI: 10.13870/j.cnki.stbcxb.2025.02.032

［Objective］ In order to investigate the effects of forest type conversion on the hydrophysical characteristics of forest soils. ［Methods］ The effects of forest type conversion on soil porosity, permeability, and matric potential, using subtropical natural evergreen broad-leaved forests and the secondary forests were compared, Castanopsis carlesii artificial forests, and Cunninghamia lanceolata artificial forests derived from them as research subjects. ［Results］ 1) After forest type conversion, total soil porosity in the lower soil layer of secondary forests significantly increased by 5.43% compared to natural forests. Soil matric potential also significantly increased in C. lanceolata artificial forests during the dry season by 5.01 kPa compared to natural forests. However, the variation of soil permeability in different forest types was not significant. 2) In the 0~40 cm soil layer of the four forest types, soil particles were mainly dominated by sand particles, but only clay particles and silt particles sho