A Study on the Forecasting Method of the Invasion of Woody-plants to the Cutting Slopes of the Second Tomei Expressway

Abstract

The relation between some environmental factors and the invasion of woody-plantsto the cutting slopes of the Tomei Expressway, which was constructed 7-9 years ago, was surveyed to propose a forecasting method of the invasion of woody-plants in the Second Tomei Expressway. As a result of Quantification method (II), numerical formula to forecast the invasion of wind dispersal woody-plants to the cut slopes was proposed, this formula was a eighty percent probability of guess the invasion in the Tomei Expressway. Therefore, this formula was seemed possible to apply the cut slopes in the Second Tomei Expressway.