菹草在太湖梅梁湾生存对策分析

对太湖梅梁湾及贡湖两个1000m^2湖滨带观测场为期1年的调查研究表明：梅梁湾观测场沉水植物仅有菹草1种；贡湖观测场沉水植物虽多达3种，但其中并没有菹草生长。分析可知：①梅梁湾观测场3面环山，为相对静水的环境，适合菹草生长。②菹草的生长季节避开了水体藻类水华暴发带来的生存压力。③菹草更能适应营养盐水平较高的底质。④贡湖观测场水面开阔，有利于波浪的发育，破坏了静水环境，不利于喜静水缓流的菹草的生长。

Analysis on Survival Strategy of Potamogeton crispus L. In Meiliang Bay, Taihu Lake

Meiliang Bay and Gonghu Lake are two important bays in Taihu Lake.Two 1000m2 observation sites were chosen from these two bays and studied for one year.Results showed that Potamogeton crispus L.was the only macrophyte in Meiliang bay,three species of macrophyte except Potamogeton crispus L.were found in Gonghu Lake.The reasons were analyzed that ①Meiliang Bay site is surrounded by mountains and the relative stagnant water is suitable for the growth of Potamogeton crispus L.②The growth seasons of Potamogeton crispus L.avoid from water bloom in summer and autumn.③Potamogeton crispus L.can fit to high nutrition of biomass.④Gonghu Lake site is wide which so easy to produce wave and break the static surface that unfit the growth of Potamogeton crispus L.