沙埋对红砂幼苗出土和生长的影响

东圳水库是莆田市的重要水源,其水质好坏对莆田市经济社会发展具有至关重要的意义.近年来库区人为活动剧烈,库区生态系统呈退化趋势.通过野外调查和对东圳水库水质监测分析,结果表明,东圳水库水质监测主要指标均呈逐年上升的总趋势,水库水质逐渐恶化,呈"水质型缺水"现象;库区水源地大规模山地开发造成水土流失及农业非点源污染严重.人为活动剧烈及库区底泥等是影响水库水质的主要因素.提出了加大宣传力度,发展生态果园,改善生态环境,实施生态补偿机制,完善监测体系建设,加强非点源污染管理及控制的研究等综合整治措施.

Effects of Sand Burial Depth on Seedling Emergence and Growth of Reaumuria Soongorica

Dongzhen Reservoir is the important water source for Putian City and its water quality affects the development of economy and the society of the city. In recent years, the ecosystem of the reservoir has been aggravated due to the strengthened human activities. According to the field investigation and the analysis of the monitoring data of water quality, it is easy to find out that the major indexes of water quality increase year by year and water quality gradually declines, which brings on the shortage of pollution-induced water. The deteriorated water quality is mainly due to the massive forest exploitation by human being, which leads to severe soil erosion, increased agricultural non-point source pollution, strengthened human activities, tremendous reservoir sediment, and so on. Then the authors suggest some comprehensive countermeasures, including strengthen of dissemination and education, development of eco-orchard, improvement of ecological environment, establishment of eco-compensation mechanism, improvement of monitoring system, enhancement of management, and control of agricultural non-point source pollution.