Caloric value of the rhizome and leaves at different developmental stages of Zostera japonica
日本大叶藻(Zostera japonica)根状茎和不同发育阶段叶片的热值动态

Caloric values and ash contents of the rhizome, young leaves, mature leaves, old leaves of Zostera japonica, the dominant seagrass species in Guangxi, were studied. We found that with the growth of leaves, ash contents (AC) increased, while gross caloric values (GCV) and ash free caloric values (AFCV) decreased. In addition, ash content and AFCV of the rhizome were larger than those of leaves, but there was no difference between GCV of the rhizome and that of leaves. Moreover, AC, GCV and AFCV of seagrass Z. japonica were less than those of mangrove.