IMPACT OF FOREST HARVESTING ON THE HYDRAULIC PROPERTIES OF SURFACE SOIL

摘要

Timber harvesting and its associated activities cause drastic changes in soil physical structures and hydraulic properties. Increasing concern is being voiced both by the forestry industry and by environmental conservation groups in regard to quantitative changes such events may cause. This study is an attempt to assess in situ changes of surface soil hydraulic properties using a newly developed disc permeameter. Five forest sites, two radiata pine forests and three native eucalypt forests in southeastern Australia, were selected to investigate the impact of timber harvesting on soil structure and hydraulic properties. The soils were sampled both before and after logging