摘要
分析了云东海湿地的变迁,指出在秦汉时期云东海曾是珠江三角洲最大的淡水湖泊,从明代至上个世纪末,云东海经历了由湖变田,再由田变塘的演变过程。在此基础上,应用RS与GIS结合的方法,研究了云东海湿地的土地利用现状,指出湿地目前所面临的人类活动、水污染和城市化等方面的威胁,并从地质、地貌、气候和水文等条件探讨了湿地恢复的可行性,最后提出云东海湿地保护和利用的措施。
The changes of the Yundonghai wetland are analyzed. It is pointed out that the Yundonghai in Sanshui was the biggest lake in the Zhujiang Delta during the Qin and Han Dynasties. But from the Min dynasty to the end of last century, Yundonghai went through such changes from lake to paddy fields, and from fields to ponds. From the study of the present situation of land utilization of the Yundonghai by means of RS and GIS, it is found that the wetland is confronted with some threats, such as 1) ecological system of the wetland is being enormously changed by unreasonable action of human being; 2) water pollution seriously damages the ecological function; 3) more and more areas of the wetland are occupied for development because of the rise of the economic value of land. In this paper the feasibility of recovering the Yundonghai according to geological, geomorphological, hydrological and climatic conditions is discussed, the measures of protection and utilization of the Yundonghai are brought forward, in which construction of an ecological wetland park of Yundonghai is suggested.
出处
《热带地理》
2005年第2期146-150,共5页
Tropical Geography
关键词
三水云东海
湿地变迁
湿地恢复
保护利用
Yundonghai in Sanshui
Environment changes
Wetland
Protection and utilization
