T-N and T-P by source category (1960-1980) | Lake Biwa

Lake BiwaASI-01

Title : T-N and T-P by source category (1960-1980)

Classification of data : I3 Eutrophication

File Name : asi-01-i3.txt

            I3 EUTROPHICATION


Nitrogen and phosphorus loadings to the lake [t yr-1](7, 26)


T-N
Sources Industrial  Domestic  Agricultural  Natural    Total
---------------------------------------------------------------
  1960    405.5     1,021.3     2,047.7    1,986.9   5,461.4
  1965    677.7     1,313.7     1,783.9    2,014.5   5,789.8
  1970  1,281.4     1,821.3     1,804.0    2,033.9   6,940.6
  1975  1,407.2     2,585.9     1,733.4    2,104.3   7,830.8
  1980  2,089.2     3,248.0     1,726.9    2,131.9   9,196.0

T-P
Sources Industrial  Domestic  Agricultural  Natural    Total
---------------------------------------------------------------  
  1960    110.3       88.4        98.4        70.4    367.5
  1965    119        200.4       101          71.4    491.8
  1970    372        348.7       119.6        72.2    912.5
  1975    249        407.6       118.6        74.8    850
  1980    371.1      497.4       120.7        75.8  1,065.0