太滆运河流域葡萄园径流污染规律分析

摘要

Vineyards in the Taige Canal Valley of Changzhou were chosen for experiment on non-point source pollution. Through monitoring the processes of rainfall, runoff and pollution generation, event mean concentrations (EMCs) were calculated, and by taking into account vineyard management practices, such as fertilization, the characteristics and affecting factors of the runoff pollution therefrom were analyzed. Results show that EMCs were negatively related to mean rainfall intensity on the whole, and varied sharply from event to event. Runoff caused by an event always lagged in phase and its pollutant content varied in concentration with its process. Pollution generation is a complicated process affected by many factors, such as rainfall, rainfall intensity, fertilization and so on.%选择常州市太滆运河流域的葡萄园开展非点源污染类型源试验,监测葡萄园的降雨、产流及产污过程,计算次降雨平均浓度(EMCs),并结合施肥等葡萄园管理措施分析葡萄园径流污染特征及影响因素.结果表明,EMCs与平均降雨强度总体上呈负相关关系,而且不同场次降雨的EMCs差异很大；对于同一场次降雨,径流的产生滞后于降雨,污染物浓度也随径流过程而不断变化.污染物流失是一个复杂的过程,受降雨量、降雨强度、施肥等诸多因素的影响.