水草自然修复围隔实验净化水质功能及相关问题的研究

Improvement of water quality by enclosure experiments on natural restoration of aquatic plants and related problems

太湖站围隔实验区内水草和软隔离围隔圈层的协同影响使1998年5～10月围隔水域内藻类叶绿素浓度平均降低47.7%,悬移质浓度降低45.5%,透明度增加37.1%.与水质相关的水环境参数年平均值有了一定的好转趋势.土著水草种群抑制藻类初级生产力的削减率为20%～90%.荇菜和菱种群抑制藻类初级生产力的能力大于马来眼子菜.指出水生植物种群净化水质的最佳时期是每年的5～7月份.比较了3类不同物理生态工程设施的效能,认为净化水质相对较优的物理生态工程设施为大涤纶布圈+水草型组合结构.

While developing database application, the first selected IDE is PowerBuilder. Sometimes the application involves data collection by serial communication, but PowerBuilder can not implement serial communication directly, it must be realized indirectly. Four methods of serial communication is introduced in the paper, i.e. port read/write directly, file operating, OLE control, API call. As a matter of fact. Those methods do work effectively in the application.