|15至20世纪, 海河流域南系历史上著名的湖泊——大陆泽和宁晋泊经历了从宽广到干涸的巨大变迁。对于二泊演变的原因, 此前学者从未做过专门的分析和研究。本文以明清时期丰富的历史文献为依据, 对影响湖泊演变的各大自然和人文因子进行了深入探讨, 得出如下基本结论:海河南系水系格局不断变迁导致湖泊水源补给发生迅速改变, 是促使湖泊相应发生显著扩张与萎缩, 并最终导致湖泊消亡的直接主要动因。此外, 来自河流的泥沙淤积, 气候的干湿变化, 人类拦水筑坝、占垦涸泊等活动加速了湖泊的演变与消涸。
|关键词: 15至20世纪 大陆泽 宁晋泊 湖泊演变
|On the impact factors of the evolution of the Daluze and Ningjinpo Lakes during 15th to 20th century
School of Social & Public Administration, East China University of Science and Technology, Shanghai 200237, P. R. China
|The Daluze and Ningjinpo Lakes, once the most well-known largest lakes in the plain in the southern part of the Haihe River valley, underwent dramatic evolution from vastness in the 15th century to dry-up in about ihe middle of 20th century. As for why these two lakes dry up, however, there has been no focused analysis or study so far; this is the first endeavor on this topic. Based on rich historical information and archives originated from the Ming and Qing dynasties, this article gives an in-depth analysis to the key natural and human factors that affect the evolvement of lakes. Findings are: rapid changes in throughflows of inpouring rivers, caused by variations in water system distribution, are the most direct and prominent driver of the evolution of these lakes, resulting in significant expansions and shrinkages and, ultimately, dry-up. Besides, factors such as variations in rainfall, sediment carried by inputting rivers, dikes, and reclamation of wetland alongside lakeshore also contribute to the evolution and dry-up of the lakes.
|Key words: 15th-20th century Lake Daluze Lake Ningjinpo lake evolution