中文摘要：

在这个工作，从 Qingdao 海区域的海的表面和底部收集的 Enteromorpha prolifera thalli 的光合的表演与叶绿素荧光和 oxygraph 技术被学习。有在他们的类型，从驾驶中心的 Qingdao 奥林匹克的南方的海表面的漂浮的 thalli 和从泥的沉积 thalli 之中的最高光合的活动的样品底部 Tuandao 海湾出现，分别地被选择为表面 thalli 和底部 thalli 的代表。尽管他们的光合的活动相对高，结果证明漂浮的 thalli 的最大的 PSII 量子产率比正常水平显著地低；thalli 形式的光合的潜力泥表面是极其低的。因此，漂浮的 thalli 被他们的环境严重强调，从泥表面的 thalli 已经是死了的或垂死，这被显示。在另一方面，实验室耕作的结果证明沉积 thalli 不能甚至在正常照明条件下面重获正常光合的活动。因此，就算他们能再到达海表面，从泥表面的 thalli 不能成为水藻的繁殖来源。因此，一个初步的结论能被得出那，直到中间 --2008 年 7 月， Qingdao 海区域的环境条件不对水藻 E 的生长合适。prolifera 并且为这个原因 E 的生物资源。在区域， prolifera 能正在衰退。

英文摘要：

In this work, the photosynthetic performances of Enteromorpha prolifera thalli collected from the surface and bottom of the sea of Qingdao sea area were studied with chlorophyll fluorescence and oxygraph technology. The samples with the highest photosynthetic activity among their kinds, the floating thalli from the sea surface of the south of the Qingdao Olympic Sailing Center and the sedimentary thalli from the mud surface of the bottom Tuandao bay, were chosen as representatives of surface thalli and bottom thalli, respectively. The results showed that the maximal PSII quantum yield of the floating thalli was significantly lower than the normal level although their photosynthetic activities were relatively high; the photosynthetic potential of the thalli form the mud surface was extremely low. Thus, it is indicated that the floating thalli are seriously stressed by their environment and the thalli from the mud surface are already dead or are dying. On the other hand, the results of the laboratory cultivation showed that the sedimentary thalli cannot regain normal photosynthetic activity even under normal illumination conditions. Thus, the thalli from the mud surface can not become reproductive source of the alga even if they can reach sea surface again. Therefore, a preliminary conclusion can be reached that, up to mid-July 2008, the environmental conditions of the Qingdao sea area are not suitable for the growth of the alga E. prolifera and for this reason the biomass of E. prolifera, in the area, could be declining.