首页 | 本学科首页   官方微博 | 高级检索  
     检索      

徒骇河沉水植物腐烂对上覆水体中营养盐形态变化影响
引用本文:张菊,邓焕广,王东启,韩勇,孙钦鑫.徒骇河沉水植物腐烂对上覆水体中营养盐形态变化影响[J].环境科学与技术,2011,34(5):14-19.
作者姓名:张菊  邓焕广  王东启  韩勇  孙钦鑫
作者单位:1. 聊城大学环境与规划学院,山东聊城,252000
2. 聊城大学环境与规划学院,山东聊城,252000;华东师范大学资源与环境科学学院,上海,200062
3. 华东师范大学资源与环境科学学院,上海,200062
基金项目:国家自然科学基金青年项目(40903049); 聊城大学科研基金项目资助
摘    要:将杀青后的菹草(Potamogetoncrispus)和金鱼藻(Ceratophyllumdemersum)剪成1 cm左右分别浸泡于装有原上覆水样的烧杯中,并置于27℃和10℃的恒温培养箱中,在不同时刻测定上覆水体的pH、溶解氧(DO)和不同形态氮磷营养盐的浓度。结果表明:由于菹草和金鱼藻的腐烂分解,上覆水体pH呈现先下降后上升的变化趋势,溶解氧急剧降低,氮磷浓度增加。氮浓度的增加以有机氮为主,平均约占63%,氨氮次之,约占25%;磷浓度的增加在实验前期以颗粒态磷为主,平均约占60%,而在实验后期以可溶性总磷为主,约占65%。在27℃下,氮磷形态浓度主要呈现先上升后下降的趋势;在10℃下,氮磷形态浓度主要表现为持续上升。硝氮和亚硝氮浓度的变化与溶解氧浓度变化具有较好的一致性。

关 键 词:沉水植物  腐烂      形态  徒骇河

Impact of Decomposition of Submerged Macrophytes on Nutrient Speciation Concentration in Overlying Water of Tuhai River
ZHANG Ju,DENG Huan-guang,WANG Dong-qi,HAN Yong,SUN Qin-xin.Impact of Decomposition of Submerged Macrophytes on Nutrient Speciation Concentration in Overlying Water of Tuhai River[J].Environmental Science and Technology,2011,34(5):14-19.
Authors:ZHANG Ju  DENG Huan-guang  WANG Dong-qi  HAN Yong  SUN Qin-xin
Institution:ZHANG Ju1,DENG Huan-guang1,2,WANG Dong-qi2,HAN Yong1,SUN Qin-xin1(1.School of Environment and Planning,Liaocheng University,Liaocheng 252000,China,2.School of Resource and Environmental Science,East China Normal University,Shanghai 200062,China)
Abstract:Using the method of laboratory simulation,the impact of decomposition of two dominant submerged macrophytes in Tuhai River on nutrient speciation concentrations in overlying water at different temperatures was studied.Results showed that in the decomposition process of Potamogeton crispu and Ceratophyllum demersum,pH of the overlying water declined and then rose,and concentrations of DO descended rapidly.Concentrations of nitrogen and phosphorus in overlying water increased,and as for nitrogen,organic nitro...
Keywords:submerged macrophytes  decomposition  nitrogen  phosphorus  speciation  Tuhai River  
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号