16世纪末以来北运河水系演变及驱动因素
苏绕绕(
), 赵珍()
), 赵珍()
The Evolution and Driving Factors of the North Canal System Since the End of the 16th Century
Raorao SU(), Zhen ZHAO()
), Zhen ZHAO()
图3. 清代北运河主河道坡度、高程与部分时段水深
(a)北运河北京—天津段坡度分级及地表水环境； (b)北京—天津段高程剖面； (c)1810—1822年档案记录的北运河水深状况
Fig.3. The slope, elevation and water depth of the main channel of the North Canal in the Qing Dynasty
(a)The slope classification and surface water environment in the Beijing-Tianjin section of the North Canal; (b)Beijing-Tianjin section elevation profile; (c)The water depth of the North Canal recorded in the archives from 1810 to 1822
