摘要
湿地的定义很宽,我国的湿地保护专指天然的湿地,湿地包括养分的交换,水的交换,大气的交换.湿地应该从整体上看,像河流上中下游,有积水区,本身是一个系统.
It is so embarrassed to see Baiyangdian, a romantic wetland with the revolutionary tradition, have such a serious result in 20 century. Professor Jiang Youxu and Chen Kelin give deep analysis to the terrible situation in Baiyangdian. The crisis there is related to the lack of water and the unreasonable human exploitation.
