In the level distribution, there is the largest amount of heterotrophic bacteria at tidal zone, less much at the area 100M from low water line, smallest at the area 300M from low water line.

• 在水平分布中,异养细菌的数量在潮间带最大,其次是离低潮线100m的海区,离低潮线300m的海区最小。