白杨河水库是20世纪70年代修建的，期间大坝安全监测只设简单的变形监测，渗流扬压力监测，由于长期运行条件所限，造成监测设施损坏，未能进......

Water cycle and water quality in the Lake Baiyangdian watershed of the North China Plain have undergone great changes du......