physical geography(1)

Reconstruction sequence of drought change(2) drought(2) PDSI(1) Palmer Drought Index(1)

1955(2) 1954(2) 1953(2) 1952(2) 1951(2) 1950(2) 1949(2) 1948(2) 1947(2) 1946(2) 1945(2) 1944(2) 1943(2) 1942(2) 1941(2) 1940(2) 1939(2) 1938(2) 1937(2) 1936(2) 1935(2) 1934(2) 1933(2) 1932(2) 1931(2) 1930(2) 1929(2) 1928(2) 1927(2) 1926(2) 1925(2) 1924(2) 1923(2) 1922(2) 1921(2) 1920(2) 1919(2) 1918(2) 1917(2) 1916(2) 1915(2) 1914(2) 1913(2) 1912(2) 1911(2) 1910(2) 1909(2) 1908(2) 1907(2) 1906(2) 1905(2) 1904(2) 1903(2) 1902(2) 1901(2) 1900(2) 1899(2) 1898(2) 1897(2) 1896(2) 1895(2) 1894(2) 1893(2) 1892(2) 1891(2) 1890(2) 1889(2) 1888(2) 1887(2) 1886(2) 1885(2) 1884(2) 1883(2) 1882(2) 1881(2) 1880(2) 1879(2) 1878(2) 1877(2) 1876(2) 1875(2) 1874(2) 1873(2) 1872(2) 1871(2) 1870(2) 1869(2) 1868(2) 1867(2) 1866(2) 1865(2) 1864(2) 1863(2) 1862(2) 1861(2) 1860(2) 1859(2) 1858(2) 1857(2) 1856(2)

Eastern Qilian Mountains(1) Southeast mountain area of Qinghai Tibet Plateau(1) Upper reaches of Heihe River(1)

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