Estimation of recharge and nutrient leaching at different scales to improve sustainable land and groundwater management

1000万加拿大人依靠地下水作为饮用水来源。这种资源不断受到污染的威胁。这是一个日益严重的问题；一项关于加拿大农业环境可持续性的研究报告称，由于增加了化肥的使用，整个加拿大的水质都在下降(Eilers等人，2010年)。因此，Frost在2006年报告称，大约16%的马尼托巴省供水井的硝酸盐含量超过饮用水指南(10 mg/L否)。

Ten million Canadians rely on groundwater as a drinking water source. This resource is under continuous threat of contamination. This is a growing problem; a study on environmental sustainability of Canadian agriculture reported a decline in water quality throughout Canada due to increased application of fertilizers (Eilers et al., 2010). As a result, Frost reported in 2006 that approximately 16% of Manitoban water supply wells had nitrate levels above the drinking water guidelines (10 mg/L NO