2023 Volume 44 Issue 4 Pages 187-199
Artificial land transformation in lake-catchment systems is engraved in lacustrine sediments, which are precious records for evaluating transformation processes as well as landform changes. Three types of land transformation are picked up for discussion: land reclamation, sand-control dam construction in catchments, and artificial channel construction connecting different catchments. Changes in sedimentation rate and physical properties respond to the progress of land reclamation in the catchments. Rapid decrease in grain density of lacustrine sediments and decrease in sedimentation rate are observed just after sand control dam construction. Increase in sedimentation rate is found in lake-catchment systems with additional catchments due to artificial channel construction.
