前言湖南的河流以湘、资、沅、澧四水为主干共有4710多条,密布全省,汇注洞庭,形成了以洞庭湖为主体的淡水渔区。解放以来,不少丘陵山区的河流,由于水工建筑切断了鱼类洄游通道,使这些水域的天然鱼产量严重下降。因此,摸清此类河流 Preface Hunan’s rivers have a total of more than 4710 rivers and lakes, including Xiang, Zi, Yuan and Sanshui. The whole province covers the Dongting River and forms a freshwater fishing area with Dongting Lake as its main body. Since the liberation, rivers in many hilly and mountainous areas have severely reduced the production of natural fish in these waters because of hydraulic structures that cut off fish migration routes. Therefore, find out about such rivers