河岸带土壤磷素空间分布及其对水文过程响应  

Spatial distribution of riparian soil phosphorus and its response to hydrologic process

作　　者：钱进[1,2] 沈蒙蒙[2] 王沛芳[1,2] 王超[1,2] 侯俊[1,2] 李昆[2] 刘晶晶[2] 

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境学院,江苏南京210098

出　　处：《水科学进展》2017年第1期41-48,共8页Advances in Water Science

基　　金：国家自然科学基金资助项目(51379062);国家水体污染控制与治理科技重大专项(2012ZX07101-008)~~

摘　　要：野外观测太湖地区典型农业河岸带——浯溪荡河岸带土壤总磷(TP)和溶解性总磷(DTP)含量以及当地降雨量、河水水位和地下水水位,探讨了丰水年条件下该河岸带土壤TP和DTP的空间分布特征以及水文过程对其空间分布的影响。结果表明:1在水平方向上,土壤TP和DTP含量从远岸向近岸均呈现先减少后增加的变化趋势;在深度方向上,各断面TP和DTP含量随土层深度的增加均呈减少的变化趋势。2不同月份河水水位均低于地下水水位,地下水补给河水。河水水位和地下水水位随时间的变化规律与降雨量的相似,但具有一定的滞后性。3降雨是土壤水分运动的主要驱动力,降雨、河水水位以及地下水水位对河岸带土壤磷素空间分布的影响显著不同。The contents of total phosphorus （TP） and dissolved phosphorus （DTP） in soil sections of Wuxidang Ri- parian zone （ a typical agricultural riparian zone of Taihu Area） , rainfall, river water level and groundwater level were monitored and spatial distributions of TP and DTP and the influences of hydrological processes on it at high flow year （2014） were discussed. Experimental results indicated： ① Soil TP and DTP firstly increased and then decreased from far-shore to near-shore in the horizontal direction and soil TP and DTP decreased with the increase of the soil depth in the vertical direction. ② River water levels in different months were all lower than the groundwater levels and river water recharged ground water. The temporal charge rules of river water level and groundwater level were similar to that of rainfall, but with rear stagnation. ③ Rainfall is the main driving force of soil water movement. Rainfall, river level and groundwater level had significantly different influences on the spatial distribution of phosphorus in the soil of riparian zone.

关 键 词：河岸带 磷 空间分布 水文过程 丰水年 太湖地区 

分 类 号：TV122[水利工程—水文学及水资源]