河岸带土壤磷素空间分布及其对水文过程响应

发布时间：2018-05-18 15:41

本文选题：河岸带 + 磷　；参考：《水科学进展》2017年01期

【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。
[Abstract]:The contents of total phosphorus (TP) and dissolved total phosphorus (DTP), local rainfall, river water level and groundwater level were observed in the typical agricultural riparian zone of Taihu Lake. The spatial distribution characteristics of TP and DTP in the riparian soil and the influence of hydrological process on the spatial distribution of TP and DTP were discussed in this paper. The results showed that the contents of TP and DTP in the soil decreased first and then increased in the horizontal direction, and in the depth direction, the contents of TP and DTP in the soil decreased firstly and then increased in the depth direction. The contents of TP and DTP in each section decreased with the increase of soil depth. 2 the water level of river water was lower than that of groundwater level in different months, and the groundwater recharged river water. The variation law of river water level and groundwater level with time is similar to that of rainfall, but rainfall with lag of 3 is the main driving force of soil water movement. The effects of river water level and groundwater level on the spatial distribution of phosphorus in riparian soil are significantly different.
【作者单位】：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;河海大学环境学院;
【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)~~
【分类号】：S153;P333

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