欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用室内试验研究了沉积物扰动下悬浮物上赋存形态磷的变化规律以及生物有效磷（BAP）的变化规律。结果表明：扰动过程中，悬浮物上不同形态磷发生了明显变化。和扰动初期比，弱吸附态磷（NH4 Cl—P）与铁铝结合态磷（Fe／Al-P）下降，钙结合态磷（Ca—P）先上升后下降，残余磷（Res—P）增加，说明扰动促进悬浮物中易释放态磷向难释放态磷转化。上覆水藻类可利用磷（AAP）明显增加，分别从0．026mg／L升至0．044mg／L（梅梁湖）、0．032mg／L升至0．051mg／L（月亮湾），而梅梁湖、月亮湾悬浮物可被生物利用颗粒态磷（BAPP）先上升后下降，最高值分别达到207、171mg／kg。说明扰动导致悬浮物上的形态磷有着相互迁移转化的趋势。
英文摘要：
A lab-scale experiment was conducted to investigate the variation of bioavailable phosphorus （BA） and the distribution of sedimentary phosphorus forms under sediment disturbance. The results showed that the distribution of sedimentary phosphorus forms changed on the suspended solids during the disturbance. Labile phosphorus （NH4 CI-P） and Fe/A1-P presented the decreasing tendency,Ca-P increased first and then decreased finally, and Res-P was increased generally. This proved that the disturbance promoted the variation of sedimentary phosphorus from easy releasing type to non-releasing type. The concentration of algae available phosphorus （AAP） in the overlying water increased from 0. 026 mg/L （Meiliang Lake） and 0. 032 mg/L （Moon Bay） to 0. 044 mg/L and 0. 051 mg/L,respectively. The concentration of bioavailable particulate phosphorus （BAPP） was increased first and then decreased with the maximum value of BAPP in Meiliang Lake and Moon Bay was 207 and 171 mg/kg respectively. It is suggested that sediment disturbance contributed to the transformation of phosphorus forms on the suspended solids.
同期刊论文项目
同项目期刊论文
Bioavailability of sedimentary phosphorusunder repeated sediment resuspension with the addition of a
Phosphorus bioavailability in a phosphorus-abundant system under repeated sediment resuspension cond
Contributions of phosphorus on sedimentary phosphorus bioavailability under sediment resuspension co
期刊信息
位置：