Abstract:Stream water sampling was conducted along the Ash River continuum from 1st order to 5th order in the Maoershan Experimental Forest of the Northeast Forestry University, near Maoershan Township, Shangzhi City, Heilongjiang Province. The pH, turbidity, concentrations of NH~+ 4-N, NO~- 3-N and PO~(3-) 4-P were measured/analyzed. Forest coverage, surrounding land-use type and landscape characteristics of each sampling location were recorded. Land-use category was later determined from recent aerial photos an...