Abstract
The prevention of reddish soil loss in the Kunigami Maaji area is very important in the light of environmental conservation of the coral reef region in Okinawa, Japan.
To understand the reducing effect of covering and aggregation due to the membrane made from chemical stabilizer on the quantity of soil loss in a cutting surface of ground and a plowed layer, soil erosion tests were carried out on six field experimental plots, where each plot was 20 m in length, 2m in width and 4.3° for the slope. The main results are as follows.
(i) The cutting surface of ground was easy to erode because of deterioration due to weathering such as a change in the drying and wetting conditions.
(ii) Plowing was effective in reducing the amount of soil loss in the cutting surface of ground.
(iii) The aggregation formed by mixing of chemical stabilizer was effective in reducing the amount of soil loss in the plowed layer.
(iv) The amount of soil loss could be reduced by covering the cutting surface of ground with a membrane formed by the spraying of a chemical stabilizer.
The surface covering with a membrane made from a chemical stabilizer was a useful method to control the soil loss in a cutting surface of ground during reclamation.
[Correction] Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering Vol.1993 No.167 (1993) pp.e1-e1
