Large-scale planting of temperate-zone fruits in Taiwan's high mountains began at Lishan on the Central Cross-Island Highway, and the Techi Reservoir became a collecting trough for fertilizers and pesticides, its water fetid all year and often changing color. It not only became a headache for water conservancy engineers in Taiwan, but internationally it also became one of the most widely cited examples of a polluted reservoir.
台灣高山溫帶水果的大規模開發，從中橫梨山開始，梨山下游德基水庫成為肥料、農藥接收盆，水質終年發臭、水色多變，不僅成了台灣水利工程人員的痛，也是國際人士最常引用的水庫汙染例子。