水库浅水区底泥营养物质释放与藻类生长关系研究  

RELATIONSHIP BETWEEN SEDIMENT NUTRIENT RELEASE AND ALGAE GROWTH IN THE SHALLOW AREA OF THE RESERVOIR

作　　者：石文平[1] 朱佳[2] 张朝升[1] 高静思[3] 

机构地区：[1]广州大学土木工程学院,广州510006 [2]深圳职业技术学院深圳市工业节水与城市污水资源化技术重点实验室,广东深圳518055 [3]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《环境工程》2015年第5期75-80,共6页Environmental Engineering

基　　金：国家水利部公益性行业科研专项(201301047)

摘　　要：采用围格试验,通过对自然条件下的水库浅水区底泥及上覆水体的模拟,研究了水库浅水区底泥营养物质的释放规律及其与藻类生长的关系。结果表明:水库浅水区底泥营养物质在第10天开始释放,在第17天出现峰值,营养物质的释放会加速藻类的生长;改变底泥原始上覆水的水质条件,低浓度的原始上覆水可加速底泥营养物质的释放,同时藻类出现峰值的时间晚于高浓度的上覆水;雨季的到来可以加速底泥中P的释放,进而加速藻类的爆发,特别是绿藻爆发;藻类爆发前期,p H和溶解氧均会升高并出现峰值。Using the enclosure experiment,sediment nutrient release rule in shallow area of reservoir was studied under the simulated natural condition,the relationship between the sediment nutrient release and the algae growth was also analyzed. The results showed that sediment nutrients in shallow area of reservoir started to release on the tenth day and the release peak occurred on the seventeenth day. Meanwhile,the sediment nutrient release can accelerate algae growth. Original overlying water with lower concentration can accelerate the release of sediment nutrient and the outbreak of algae,comparing with higher concentration overlying water. Raining could also accelerate the sediment nutrient release and the growth of algae,especially green algae. Before the algal bloom,p H and dissolved oxygen would raise and show the peak.

关 键 词：水库底泥 围格 总氮 总磷 藻类生长 

分 类 号：X524[环境科学与工程—环境工程]