三處研究地區經利用計量地形所得之統計係數與地質條件互相比較,發現其簡單的相關性:地層愈老者高度和坡度的等級愈大;而其與起伏度的關係卻較不規則,地層愈新者起伏度較趨向高等級、地層愈老者則等級較均勻分散。又將地形計量與集水區內之崩坍災害互相比較,亦發現其相關性:高度與坡度等級愈大者,崩坍面積之比例愈高;但起伏度較趨向高等級者,崩坍面積並不一定大。若以集水區的水土保持問題而言,高度和坡度大者,目前的問題較複雜,但起伏度較趨向高等級者,將來的問題必較為複雜。
If we combine all statistical parameters of geomorphological quantity with geological conditions, we can find their simple relationship. The older -the formations are, the higher grade altitude and slope of landforms may be. With the relief they are not so, the younger the formations are, the larger the relief may be. If we consider these parameters with the area ratio of landslides to all landforms, we find the larger the altitude and slope are, the larger the ratio may be, but. higher relief does not induce higher .area ratio of landslides. If we consider the geomorphological parameters with the problems of soil 'and .water conservation, we find that higher altitude and slope induce more complex problems presently, and higher relief induces more complex problems in future.
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