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• 1957 Volume 23 Issue 2
  Published: 15 April 1957

    

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  FUNDAMENTAL PROBLEMS ON THE DIVISION OF AGRICULTURAL REGIONS OF CHINA

  CHOU CHI-YEH

  1957, 23(2): 127-144. https://doi.org/10.11821/xb195702003

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  (1) Theoretical basis for the division of agricultural regions: In a socialistic country, agriculture forms a part of national economy, every agricultural region being an indispensible constituent in agricultural development of the country and being also an agricultural complex of relatively independent nature which complies principal crops, secondary crops and subsidiary productions.
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  SHIFTING RIVER COURSES OF THE LOWER PEIKIANG IN KWANGTUNG PROVINCE

  YEH HUI

  1957, 23(2): 145-160. https://doi.org/10.11821/xb195702004

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  The present outline of the relief of the central part of Kwangtung province was formed toward the end of the Mesozoic orogenic movement. Larga hodies of granitic intrusion were produced in the east and west sides of the Peikiang and in the south side of the lower Sikiang. As a result of these granitic iniru-sions, high lands were formed. The area between the high lands was occupied by a low basin.
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  HYDROGRAPHY OF THE HSIANG-KIANG BASIN, HUNAN PROVINCE

  YANG JEN-CHANG

  1957, 23(2): 161-182. https://doi.org/10.11821/xb195702005

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  This paper describes the hydrographic character of the Hsiang-Kiang Basinand discusses tim principles and methods of hydrographical study in China.
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  AGRICULTURAL CHARACTERISTIC TEMPERATURES AND ACCUMULATED TEMPERATURES IN CHINA

  C. S. Yao

  1957, 23(2): 183-203. https://doi.org/10.11821/xb195702006

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  The so-called "agricultural characteristic temperature" denotes the daily mean temperature of 0°, 5°, 10° or 15°C and accumulated temperatures of 10°C up. Every different mean temperature is chaaacteristic of a certain rural phenomenon, e，g., daily mean temperature above 0°C charactsrizes the farming season; above 5°C, the period of growth; above 10°C, the time of buoyant growth; and above 15°C, the period for planting cotton and rice. The accumulated temperatures of 10°C up are to a certain degree correlated with the distribution of crops.
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  PROBLEM OF PROJECTION AND PERSPECTIVE IN PICTORIAL REPRESENTATION OF RELIEF IN MAP DRAWING

  LIU TI-SHENG

  1957, 23(2): 217-221. https://doi.org/10.11821/xb195702008

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  The pictorial representation of the three dimensions of the earth surface has always been of special concern to cartographers. Several such drawings have al-ready b,.en published in China, among which "The bird's-eye-view atlas of the to-pography of China" produced by Mr. Chen Shu-peng is the outstanding one. The technics employed in drawing this atlas are the combination of shading, layer tints and block diagram. Tlnts a more realistic effect is attained in the maps.