摘要
在室内模拟条件下研究了沉水植物黑藻对沉积物有机及无机磷形态及潜在可交换性磷的影响.结果表明:①黑藻可显著降低沉积物的有机质、阳离子代换量及总磷(p<0.05),对沉积物中的磷起到活化的作用.②黑藻对沉积物无机磷形态中的NaOH-P有极显著影响(p<0.01),对有机磷形态中的活性有机磷有一定影响(p<0.1),而对其他形态磷的影响没有达到显著水平.③有植物组沉积物的潜在可交换性磷的量增大了11.5%,而对照组沉积物的却减少了61.0%.两者变化的方向截然相反,而且变化的程度也存在较大差异.这说明黑藻的作用增大了沉积物中潜在可交换性磷的量.
The influences of submerged vegetation Hydrilla verticillata on forms of inorganic and organic phosphorous forms and potentially exchangeable phosphate in sediments were investigated under indoors simulating condition. The results show that： （1） Hydrilla verticillata can decrease the amount of OM, CEC and TP evidently （p 〈 0.05） and activate the phosphate in sediments. （2） In the forms of inorganic phosphorus, the NaOH-P was significantly influenced （p 〈 0.01 ） and the labile organic P in the forms of organic P was influenced to a certainty （ p 〈 0.1 ）, while no significant differences were made to the other forms of phosphorous. （3） Hydrilla verticillata can affect the amount of potentially exchangeable phosphate of the sediments, which increased 11.5% for the vegetation-group and decreased 61.0% for the control group during the period of the experiments. The change orientation was oppositional and the degree of change was quite different. This testified that Hydrilla vertlcillata could increase the amount of potentially exchangeable phosphate of sediments.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第12期2421-2425,共5页
Environmental Science
基金
国家重点基础研究发展规划(973)项目(2002CB412304)
关键词
沉积物
沉水植物
黑藻
磷形态
潜在可交换性磷
sediments
submerged vegetation
Hydrilla verticillata
phosphorus forms
potentially exchangeable phosphate
