星云湖藻类发展趋势及其资源化利用可行性研究

Study on the Development Trend of Algae and the Feasibility of Its Resource Utilization in Xingyun Lake

对星云湖多年表层湖水中藻类的第一手监测资料及大型仿生式除藻船蓝藻控制效果研究资料做了系统的分析研究,旨在揭示星云湖藻类发展趋势,分析藻类资源量,研究藻浆资源化利用。结果表明,星云湖藻类生物量多年呈增长趋势;湖区藻类主要分布于西北湖湾,藻浆量共48 150 m3,鲜重7 704 t,除藻船年平均打捞量共1 684 m3,鲜重269.44 t;星云湖流域藻浆资源化利用具有一定可行性,主要表现为藻浆营养成分明显,无显著生态安全风险,湖区农业生产方式有利于消化利用藻浆,藻浆在星云湖区具有很好的资源化利用前景。

In order to analyze the development trend and resource amount of algae in Xingyun Lake and study the resource utilization of algae slurries, systematic analyses were carried out both on the monitoring data of algae in the top layer for many years and the effect of cyanobacte- ria control by the large bionic type ship in Xingyun Lake. The results showed that there was a growing trend of algae biomass in Xingyun Lake for many years, and the algae was mainly distrilmted in the northwest bay. The ＇volumes of algae slurries in Xingyun Lake were 48 150 m^3 and their fresh weight was 7 704 t, and the volumes of algae slurries salvaged annually were 1 684 m^3 and their fresh weight was 269.44 t. To a certain extent, the resource utilization of algae slurries in Xingyun Lake was feasible, because the nutrient contents of algae slurries were obvi- ous and there was no significant ecological security risk. In addition, the mode of agricultural production around the lake was conducive to use these algae slurries and there was a good prospect for the resource utilization of algae slurries in Xingyun Lake.