不同河流地貌形态的生态学作用及生态功能分析

he different river geomorphology and stream forms have different ecological role and function. In this paper the hydrological and hydraulics characteristics of different type of stream forms and river geomorphology were analyzed. Furthermore，river space structure and stream forms were classified. Based on the Yangtze River region of the Spawning ground of Chinese sturgeon and four major Chinese carps, the effect and relation between river geomorphology and stream forms, and bio-diversity were discussed. It is introduced that river ecosystem health and bio-diversity depend on space diversity and heterogeneity of river geomorphology and stream forms.