Winter Hydrology and NO 3 − Concentrations in a Forested Watershed: A Detailed Field Study in the Adirondack Mountains of New York 1

摘要: Abstract:  More than 85% of NO3− losses from watersheds in the northeastern United States are exported during winter months (October 1 to May 30). Interannual variability loads individual streams is closely related interannual climatic variations, particularly winter. The objective our study was understand how and hydrogeological factors influence dynamics small Physical parameters including snow depth, soil temperature, stream discharge, water table elevation were monitored 2007-2008 two catchments Adirondack Mountains, New York State. Snowpack persisted mid-December mid-April, insulating soils such that only isolated instances frost observed period. export a mid-winter rain-on-snowmelt event comprised between 8 16% total load for four-month This can be compared with final spring melt, which 38 45% load. Our findings indicate minor melt events detectable changes streamflow, groundwater level, depth. But, based on loading, these relatively contributors loss. A warmer climate fluctuating snowpack may result more major greater surface waters.