Yearly Charts of Dryness/Wetness in China for the Last 500-year Period

Language: Chinese
1981; Hardcover;185x260mm;332

In enormous Chinese historical writings there are abundant climatic descriptions, which are of great value for studying climatic fluctuations. Especially since the 15th century the compilation of local annals has been expanded in a greater scope, and one can find more systematical climatic materials in thes annals.
We processed these materials from more than 2200 local annals and many other historical writings, and abstracted from them more than two million and two hundred thousand characters. The dryness/wetness of each year in the recent 510-year period are classified into 5 grades: grade 1. very wet; grade 2, wet, grade; grad 3. normal; grade 4. dry, and grade 5. very dry. The territory of China is divided into 120 regions, ach of them has an area corresponding approximately with one or two prefectures of th epresent administration. The present yearly charts of dryness/wetness have been constructed on the basis of these materials.
The charts consist of three parts: Part 1. 510 yearly charts of dryness/wetness in the period of 1470-1979; Part 2. yarly charts of rainfall and its percentage of dparture in the period 1951-1979; Part 3. The sequences of grades of dryness/wetness in the 510-year period for the 120 regions in China. The charts serve as a reference for various departments of scientific researches, production, construction, and economical planning.