"If one takes the estimate of 1.5 tons of sand and rocks for every cubic meter, several hundred million tons of erosion occurred in the middle and upper stretches of the river over the last few decades," says Huang Jui-hsiang, a native son of the east coast who is extremely concerned about the condition of the Chingshui ecology.
「若以面積一立方公尺約一．五噸砂石估算，幾十年來，中上游沖蝕掉好幾億噸砂石」，同樣身為東部子弟，極關心清水溪生態的植物學者黃瑞祥說。