Agricultural activities have caused the average water temperature to rise by five degrees over the past three decades, and many stretches of the river are now unlivable for the salmon, which does best in water of 17 degrees Celsius.
因為農業活動使溪流水溫提高，三十年來，整個大甲溪流域，平均升高攝氏五度，許多溪段已不適合生活於十七度水溫的鮭魚。原住魚