Estimation on dynamic release of phosphorus from wind-induced suspended particulate matter in Lake Taihu
Estimation on dynamic release of phosphorus from wind-induced suspended particulate matter in Lake Taihu
复制标题
太湖风致悬浮颗粒物磷动态释放估算
DOI：
10.1360/02yd0438
复制
发表时间：
2004-08-01
期刊：
影响因子：
--
通讯作者：
Zhang, C
中科院分区：
文献类型：
--
作者：
Fan, CX;Zhang, L;Zhang, C
通过人工扰动试验，模拟了不同湖区悬浮颗粒物（SPM）与风速的对应关系，研究了SPM中磷的物理化学形态转化和生物矿化、衰减过程，定量估算了磷转化对太湖水体磷负荷的贡献。结果表明，该工艺每年可生产约0.44t.太湖的a（-1）负荷主要来源于悬浮颗粒物物化转化为可溶性活性磷（SRP）的释磷作用，生物矿化和腐解作用贡献约425.8t. a（-1），相当于太湖总外负荷的15.0%，是河流入湖SRP负荷的4.7-7.5倍，是太湖动力内负荷的重要来源。湖泊动态内负荷的决定因素是悬浮物中有机磷含量及其生物转化有效性。
Through man-made disturbance experiments, the corresponding relationships between suspended particulate matter (SPM) and wind speed in different lake areas were simulated, the physicochemical formal transformation and biological mineralizing and decaying processes of phosphorus in SPM were studied, the contribution of phosphorus transformation to phosphorus loading of the water of Lake Taihu was quantitatively estimated. The results show that about 0.44 t . a(-1) loading in Lake Taihu mainly comes from phosphorus-releasing action of SPM in physicochemical transformed to soluble reactive phosphorus (SRP), and the contribution mainly from biological mineralizing and decaying was about 425.8 t . a(-1), which is equal to 15.0% of the total external loading of Lake Taihu, namely 4.7-7.5 times as much as SRP loading entering the lake by the rivers; thus it is the important source in dynamical internal loading of the lake. The determining factors for dynamical internal loading in lakes are organic phosphorus content in suspended solid and its biological transition availability.