Annual Net Flux of Carbon to the Atmosphere from Land-Use Change: 1850-2005 R.A. Houghton Units = Tg C (1 teragram = 10^12 g) Positive values represent a release of carbon to the atmosphere, while negative values represent a net uptake of carbon by the terrestrial biosphere. Please note: due to rounding, the sum of the regions included in this textfile may not equal the global totals listed in the TRENDS document. Please refer to the Excel spreadsheet for more precise estimates. Year Global USA Canada South+ Europe N.Africa Tropical Former China South+ Pacific Central +Middle Africa USSR Southeast Developed America East Asia Region 1850 500.6 164.1 5.5 23.5 55.0 4.0 -1.3 58.6 101.8 87.3 2.0 1851 492.7 165.7 5.4 23.2 55.0 4.0 -1.1 58.6 93.1 86.9 2.0 1852 548.5 230.7 5.3 22.9 55.0 4.0 -1.0 58.9 83.8 86.9 2.0 1853 546.8 238.5 5.3 22.6 55.0 4.0 -1.1 59.2 74.2 87.0 2.0 1854 544.8 246.2 5.3 22.4 54.9 4.0 -1.0 59.6 64.3 87.1 2.0 1855 542.1 253.6 5.3 22.2 54.9 4.0 -1.1 60.0 54.2 87.1 2.0 1856 547.7 260.5 5.2 22.0 54.9 4.0 -1.1 60.3 52.6 87.2 2.0 1857 553.3 267.2 5.2 21.8 54.8 4.0 -1.1 60.7 51.3 87.3 2.0 1858 558.6 273.6 5.2 21.7 54.8 4.0 -1.4 61.1 50.2 87.4 2.0 1859 564 279.7 5.2 21.5 54.8 4.0 -1.6 61.5 49.4 87.5 2.0 1860 569 285.7 5.2 21.1 54.8 4.0 -1.8 61.9 48.7 87.6 2.0 1861 579.6 290.7 5.1 21.9 54.8 9.0 -2.1 62.2 48.1 87.7 2.1 1862 520.9 237.7 6.8 22.1 54.9 10.0 -1.9 53.7 47.8 87.8 2.2 1863 521.1 236.8 7.3 22.2 55.0 10.8 -1.7 53.7 46.6 87.9 2.3 1864 521.6 236.0 7.8 22.3 55.1 11.3 -1.2 53.8 46.2 88.0 2.4 1865 522.4 235.2 8.4 22.3 55.2 11.6 -0.7 53.9 45.8 88.1 2.6 1866 522.5 234.8 8.9 21.9 55.3 12.0 -0.5 53.7 45.4 88.2 2.7 1867 520.8 232.5 9.4 21.5 55.5 12.3 -0.2 53.6 45.2 88.2 2.8 1868 519.2 230.6 9.9 21.1 55.6 12.6 -0.2 53.5 44.9 88.3 3.0 1869 517.5 228.6 10.4 20.7 55.8 12.9 -0.4 53.4 44.7 88.4 3.1 1870 516.3 226.8 10.8 20.7 56.0 13.2 -0.6 53.3 44.5 88.4 3.2 1871 536.7 224.2 11.3 20.6 50.5 13.4 -0.8 53.2 44.3 110.0 9.9 1872 623.2 303.9 11.8 20.5 49.6 13.6 -1.0 53.5 44.2 115.2 11.9 1873 634.1 309.3 12.3 20.4 48.8 13.9 -0.8 53.7 44.1 118.9 13.7 1874 641.1 314.4 12.7 20.3 47.9 14.1 -0.4 54.0 42.0 121.7 14.3 1875 648.4 319.3 13.2 20.3 47.2 14.3 -0.3 54.3 41.4 123.9 14.9 1876 655.5 324.1 13.6 20.4 46.5 14.5 -0.1 54.9 40.9 125.2 15.4 1877 662.4 330.1 13.3 20.9 45.9 14.6 0.0 55.0 40.4 126.4 15.8 1878 669.5 335.8 13.2 21.3 45.4 14.8 0.0 55.1 40.3 127.4 16.1 1879 676.4 341.3 13.1 21.7 44.9 14.9 0.0 55.2 40.4 128.3 16.4 1880 682.9 346.7 13.1 22.1 44.4 15.1 -0.2 55.3 40.6 129.1 16.7 1881 718.9 350.7 13.0 54.1 43.9 15.2 -0.3 55.4 40.3 129.5 17.0 1882 672.7 295.6 12.9 63.0 43.5 15.4 -0.5 55.5 40.1 129.9 17.3 1883 678.3 294.0 12.8 70.2 43.1 15.5 -0.7 55.6 39.9 130.2 17.6 1884 683.4 292.7 12.7 76.1 42.7 15.6 -0.4 55.8 39.7 130.5 17.9 1885 687.7 291.6 12.6 81.2 42.4 15.8 -0.2 55.9 39.6 130.7 18.2 1886 690.4 290.3 12.5 84.1 42.6 15.9 0.0 56.0 39.4 131.0 18.5 1887 689.8 286.8 12.4 86.2 42.7 16.0 0.1 56.2 39.2 131.2 18.8 1888 688.6 283.3 12.3 87.9 42.9 16.2 0.0 56.3 39.1 131.4 19.1 1889 687.2 279.9 12.2 89.4 43.1 16.3 -0.2 56.4 39.0 131.6 19.4 1890 685.9 276.6 12.1 90.6 43.3 16.4 -0.2 56.6 39.0 131.8 19.6 1891 681.5 272.6 12.0 73.4 43.5 16.5 -0.4 56.7 39.0 148.3 19.8 1892 695 285.2 11.9 70.0 43.7 16.7 -0.7 56.8 39.0 152.3 20.1 1893 695.8 285.6 11.8 67.3 43.9 16.8 -1.1 57.0 39.1 155.2 20.3 1894 713.3 287.1 11.7 65.2 44.1 16.9 -1.4 57.1 54.6 157.4 20.5 1895 717.5 288.7 11.7 63.6 44.3 17.0 -1.3 57.2 56.4 159.2 20.7 1896 719.4 288.3 11.6 62.6 44.5 17.1 -1.3 57.3 58.1 160.2 20.9 1897 723 289.2 11.5 61.7 44.7 17.2 -1.0 57.5 59.8 161.1 21.1 1898 724.5 288.2 11.4 61.1 44.9 17.3 -0.6 57.6 61.4 161.9 21.3 1899 725.8 287.2 11.3 60.6 45.0 17.4 -0.6 57.7 62.9 162.6 21.6 1900 726.9 286.3 11.3 60.3 45.2 17.6 -0.7 57.8 64.4 163.1 21.7 1901 792.8 285.9 11.2 121.8 45.4 20.1 -0.8 57.9 65.8 163.5 22.0 1902 796.8 240.4 24.0 139.4 45.7 20.6 -0.3 58.0 82.7 163.8 22.3 1903 825.9 231.8 26.8 153.8 46.0 21.0 1.0 58.2 100.6 164.1 22.7 1904 852.4 222.2 29.5 165.8 46.3 21.3 2.7 58.3 119.0 164.4 23.0 1905 878.5 213.1 32.1 176.1 46.6 21.5 4.8 58.5 137.9 164.6 23.3 1906 909.5 205.9 34.6 180.8 46.9 21.7 7.4 58.6 157.1 172.8 23.6 1907 918.6 198.5 37.1 184.7 47.3 21.9 10.2 58.6 161.6 174.9 23.9 1908 927.9 193.3 39.4 187.9 47.6 22.1 12.9 58.6 165.5 176.4 24.3 1909 935.3 188.2 41.8 190.5 48.0 22.2 15.5 58.6 168.4 177.5 24.6 1910 941 183.0 44.1 192.6 48.3 22.3 17.9 58.5 170.9 178.4 24.9 1911 882.9 178.8 46.3 130.5 48.7 22.5 20.2 58.5 173.2 179.0 25.1 1912 846.2 153.5 48.6 112.6 49.1 22.6 22.7 58.5 173.6 179.6 25.4 1913 815.9 147.6 50.8 98.0 49.5 22.7 25.0 63.7 173.8 159.2 25.7 1914 804.8 142.9 52.9 85.5 49.8 22.8 27.2 65.2 177.8 154.7 25.9 1915 793 138.3 55.1 74.6 50.2 22.9 29.4 66.6 178.4 151.4 26.2 1916 795.1 133.5 57.2 70.5 50.7 22.9 31.5 67.9 178.8 155.8 26.4 1917 798.2 130.0 57.8 67.2 51.1 23.0 34.1 69.2 183.7 155.5 26.6 1918 801.4 126.1 58.4 64.5 51.5 23.0 36.4 70.5 188.8 155.4 26.8 1919 807.1 124.4 58.9 62.2 51.9 23.0 38.7 71.8 193.9 155.2 27.1 1920 808.8 118.6 59.5 60.0 52.3 23.0 41.1 73.1 199.0 154.9 27.3 1921 856.7 112.5 60.0 104.8 52.8 23.1 43.0 74.4 204.1 154.6 27.6 1922 849.1 85.5 60.6 117.3 53.2 23.1 44.9 75.7 206.7 154.3 27.8 1923 857 76.4 61.1 127.4 53.6 23.1 46.7 77.1 209.2 154.4 28.0 1924 862.7 67.2 61.6 135.9 54.0 23.1 48.2 78.4 211.6 154.5 28.2 1925 865.6 56.5 62.1 143.3 54.4 23.1 49.6 79.8 213.8 154.6 28.3 1926 870.5 49.8 62.6 145.4 54.1 31.7 51.0 81.2 216.0 150.1 28.6 1927 909.7 93.2 52.6 147.0 53.6 33.6 52.3 82.5 216.9 149.2 28.8 1928 913 92.9 51.0 148.1 53.0 35.4 54.1 83.1 217.8 148.6 29.1 1929 940 117.0 49.4 149.0 52.4 35.8 55.8 83.7 219.5 148.2 29.3 1930 1018.1 191.7 47.8 150.1 51.6 36.1 57.4 84.3 221.6 148.0 29.5 1931 1028.7 187.6 46.3 161.8 50.7 36.7 59.1 84.9 223.7 148.0 29.8 1932 930.8 85.0 44.9 165.0 49.7 37.3 60.8 85.5 224.6 148.0 30.0 1933 927.6 77.4 43.5 167.5 48.6 37.8 62.8 86.1 225.4 148.1 30.3 1934 915.3 70.2 42.1 169.5 47.4 38.3 64.7 84.6 220.0 148.2 30.5 1935 913.7 67.8 40.8 171.1 46.1 38.8 67.5 82.8 219.8 148.3 30.8 1936 922 59.4 39.5 172.8 44.8 39.2 69.2 80.9 219.8 165.5 31.0 1937 899.3 32.8 38.2 174.6 43.4 39.6 71.1 78.8 219.7 169.7 31.3 1938 902.4 33.4 36.9 176.3 42.0 40.0 73.0 76.7 219.8 172.8 31.5 1939 900.5 29.5 35.6 177.8 40.6 40.3 75.3 74.5 219.8 175.2 31.7 1940 887.5 16.5 34.4 179.2 39.1 40.7 77.6 71.1 219.8 177.1 32.0 1941 870.2 15.0 33.1 177.8 37.7 41.0 79.5 54.4 219.8 179.6 32.2 1942 891.3 27.6 33.1 177.3 36.2 41.3 81.7 47.5 231.9 182.2 32.4 1943 886.4 13.2 33.1 176.9 34.8 41.7 84.0 40.8 244.6 184.7 32.6 1944 892.3 9.0 33.1 176.6 33.3 41.9 86.3 34.4 257.7 187.2 32.8 1945 894.1 0.1 33.1 176.4 31.9 42.1 88.6 28.0 271.2 189.6 33.0 1946 976.9 -4.8 33.1 179.4 30.4 42.3 91.2 24.0 284.9 263.1 33.2 1947 1008.9 5.9 32.9 182.5 29.0 42.6 93.5 20.4 286.9 281.7 33.4 1948 1015.8 -5.2 32.7 185.8 27.5 42.8 97.3 17.2 288.7 295.4 33.6 1949 1024.9 -10.6 32.5 189.2 26.1 43.0 101.2 14.3 290.2 305.1 33.8 1950 1037.3 -11.4 32.4 192.8 24.7 43.2 105.2 13.1 290.1 313.4 34.0 1951 1258.3 3.2 32.2 251.7 23.5 34.4 109.3 126.9 289.8 319.8 67.5 1952 1284.7 -42.0 32.9 270.4 22.5 32.6 105.9 149.6 308.1 327.8 76.9 1953 1280.9 -66.3 32.6 285.8 21.7 30.8 108.9 171.5 327.0 284.3 84.5 1954 1335 -64.4 32.4 298.7 21.0 28.6 112.0 192.7 346.5 281.0 86.6 1955 1379.5 -73.6 32.1 309.8 20.4 26.4 115.3 213.7 366.3 281.0 87.9 1956 1438.9 -65.5 31.9 316.5 20.0 25.7 118.6 236.1 386.5 280.4 88.8 1957 1469.1 -68.0 31.6 322.0 19.7 25.0 122.0 258.2 388.6 280.7 89.3 1958 1520.8 -33.0 31.4 326.7 19.5 24.4 124.8 280.0 381.7 275.9 89.5 1959 1397.8 -71.8 31.1 330.7 19.4 23.8 127.6 208.3 362.1 276.8 89.6 1960 1385.8 -74.9 30.9 334.3 19.4 23.2 130.5 210.9 343.1 278.9 89.6 1961 1463.9 -88.5 30.6 449.6 16.7 22.6 132.7 205.2 323.1 282.4 89.5 1962 1460 -86.2 30.7 484.4 16.3 22.1 133.6 201.9 296.2 271.8 89.3 1963 1474.9 -92.3 30.8 512.0 16.0 21.5 138.9 198.8 285.6 274.4 89.1 1964 1487.1 -95.4 30.9 534.4 15.8 21.0 140.7 196.2 285.0 269.7 88.8 1965 1505 -99.9 31.1 553.7 15.6 20.5 143.4 192.9 284.3 274.8 88.6 1966 1539.3 -67.9 31.2 563.7 15.5 21.6 142.5 181.2 283.1 280.1 88.3 1967 1545.8 -63.8 31.2 572.4 15.4 21.8 143.6 169.5 282.2 285.6 87.9 1968 1477.7 -62.8 31.2 580.3 15.3 22.0 139.4 157.9 281.7 225.0 87.6 1969 1483.1 -51.6 31.1 587.0 15.3 21.7 146.5 147.8 281.2 216.9 87.0 1970 1439.7 -53.0 31.1 593.1 13.6 21.5 139.8 114.5 280.8 212.0 86.5 1971 1291.7 -89.3 31.1 536.8 11.2 21.5 143.1 100.1 280.7 206.4 50.2 1972 1264.2 -80.9 30.1 524.9 8.6 21.6 146.8 85.4 282.8 205.7 39.1 1973 1248.7 -92.9 30.2 515.6 6.0 21.6 150.8 71.3 284.7 231.8 29.7 1974 1254.5 -92.1 30.2 508.3 3.2 21.7 154.7 64.9 287.2 250.4 26.1 1975 1245.1 -81.5 30.3 502.6 0.2 21.7 144.5 58.8 291.3 254.0 23.2 1976 1311.9 -64.8 30.4 503.0 -2.6 21.8 159.0 55.9 303.4 284.9 20.8 1977 1315.1 -60.2 30.5 504.2 -5.6 21.8 142.4 50.4 306.4 306.6 18.8 1978 1311.9 -54.4 30.6 505.3 -8.8 21.8 149.0 44.8 285.3 321.2 16.9 1979 1283.8 -51.7 30.7 506.2 -12.1 21.8 150.3 39.5 248.1 335.7 15.3 1980 1239.9 -53.9 30.9 507.8 -14.1 21.9 144.6 35.4 209.5 344.1 13.7 1981 1263.4 -50.2 31.0 510.0 -15.3 17.0 166.7 33.4 168.8 386.5 15.6 1982 1463 -38.0 27.8 729.4 -16.4 16.6 181.9 30.7 122.9 393.3 14.9 1983 1512.9 -38.8 27.0 787.5 -17.2 16.4 195.3 28.8 101.5 398.2 14.1 1984 1560.1 -42.5 26.2 833.6 -17.9 18.0 205.5 27.2 93.8 403.4 12.7 1985 1583.2 -39.4 25.5 873.0 -18.3 19.8 197.1 25.8 82.7 405.9 11.3 1986 1601.1 -34.3 24.7 902.5 -18.6 20.4 193.4 23.4 76.8 403.1 9.8 1987 1611.1 -31.1 24.2 917.0 -18.7 21.0 193.3 22.6 71.0 403.6 8.2 1988 1638.5 -21.6 23.7 926.4 -18.7 21.7 202.8 21.8 64.8 410.7 6.6 1989 1647 -21.8 23.2 932.6 -18.4 22.5 197.1 21.2 66.6 418.6 5.3 1990 1643.7 -31.9 22.8 936.8 -18.1 23.2 201.4 20.1 61.1 424.5 3.9 1991 1712.5 -31.9 22.3 938.6 -18.1 23.2 195.5 20.1 50.9 508.0 3.9 1992 1605 -31.9 21.6 803.7 -18.1 23.2 214.3 20.1 39.8 528.4 3.9 1993 1593.8 -31.9 20.9 767.5 -18.1 23.2 224.9 20.1 39.5 543.7 3.9 1994 1580.5 -31.9 20.1 737.3 -18.1 23.2 243.7 20.1 43.0 539.2 3.9 1995 1561.6 -31.9 19.4 713.4 -18.1 23.2 262.8 20.1 31.1 537.7 3.9 1996 1531.3 -31.9 18.7 692.1 -18.1 23.2 260.9 20.1 27.3 535.0 3.9 1997 1491.3 -31.9 18.4 678.5 -18.1 23.2 247.5 20.1 21.1 528.5 3.9 1998 1487.2 -31.9 18.2 667.1 -18.1 23.2 269.4 20.1 12.1 523.2 3.9 1999 1449.2 -31.9 17.9 656.4 -18.1 23.2 263.9 20.1 5.0 508.7 3.9 2000 1409.9 -31.9 17.6 649.6 -18.1 23.2 260.9 20.1 -12.9 497.5 3.9 2001 1385.4 -31.9 17.6 643.2 -18.1 23.2 261.7 20.1 -12.9 478.5 3.9 2002 1517.7 -31.9 17.6 625.5 -18.1 23.2 258.5 20.1 -12.9 631.7 3.9 2003 1513.2 -31.9 17.6 616.5 -18.1 23.2 225.5 20.1 -12.9 669.3 3.9 2004 1534.9 -31.9 17.6 609.4 -18.1 23.2 225.8 20.1 -12.9 697.8 3.9 2005 1467.3 -31.9 17.6 606.4 -18.1 23.2 239.2 20.1 -12.9 619.7 3.9