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Table of Content

    15 January 1950, Volume 16 Issue 1 Previous Issue    Next Issue
    The Geographical Distribution of Crop Productivity In Szechuan Province, China
    Mei-Ngo Jen
    1950, 16 (1):  1-22.  doi: 10.11821/xb195001001
    Abstract ( )   PDF (1448KB) ( )   Save
    In the last decade, growing attention has been paid to the study of crop productivity which has an important bearing on the areal differentiation of agricultural landscape稦our kinds of coefficients have been devised to measure the productivity, i.e. the productivity coefficient, the ranking coefficient, the money value coefficient and the energy cofficient. It has been shown else-where that the money value coefficient is a more useful and more direct indi-cator of crop productivity, and economic units correspond rather closely with nutritive units. In the present study, both money value coefficient and energy coefficient have been calculated so that the results may be compared.
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    Hydrography of the Tung-ting Lake
    Y. C. Shen
    1950, 16 (1):  23-50.  doi: 10.11821/xb195001002
    Abstract ( )   PDF (3316KB) ( )   Save
    The Tung-ting Lake, situated at the center of the Middle Yangtze Basin, is the largest fresh water lake in China. It measures 150 km. from east to west and a little less than 100 km. from north to south, with an area of 3,100 sq. km. at the normal flood water level. During the winter, when the water is low, numerous shoals 'and bars appear in the lake, subdividing it into hundreds of small lakes, among which the East Lake and the West Lake are the largest, having an area of 2,106 sq. km. and 394 sq. km. respectively. (Fig. 1) The lake forms an outlet for numerous rivers coming from south and south- west and is connected with the Yangtze by four inlets in its north-western part. The mean annual inflow into the lake is 13,816 cubic meters per second, a little over half of which is furnished by the Yangtze. The lake flows into the Yangtze by one outlet near the city of Yo-yang.
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    The Climate of North-eastern China
    Jen-Chang Yang
    1950, 16 (1):  51-81.  doi: 10.11821/xb195001003
    Abstract ( )   PDF (2527KB) ( )   Save
    North-eastern China which complies six provinces and a part of Inner Mongolia is situated between latitude 38°43'N and 53°30'N, longitudes 115°23E and 135°20'E, having an area of 1,302,OOOsq. km..
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    A Relative Relief Map of Fukien, China
    Wan-Ru Tsao
    1950, 16 (1):  97-110.  doi: 10.11821/xb195001005
    Abstract ( )   PDF (858KB) ( )   Save
    The relative relief map of Fukien is .constructed according to the method devised by Joseph Partsch in 1911.The basic data are derived from 1:50,000 topographic maps published by the Ordnance Survey of China from 1934 to 1940. The topographic maps are divided into uniforms squares, measuring 1.8 to 1.83km. long in each side, and 2.5km. long in diagonal distance. Ih each square, the difference of altitude between the highest and lowest point is counted. Altoge-ther, 15,590 such squares are measured. They form the basis for constructing the relative relief map which covers an area of 40,857sq.km.. The relative ielief map gives a clear expression of the topographical char-acteristics of Eastern Fukien. Except along the coast, where narrow plains are usually found, the whole region is very mountainous with great relief energy and with practically not a single flat plain which has an area of 3.3sq.km二In our map, the relative relief of Eastern Fukien is divided in six grades, i.e., 0-20m., 20-100m., 100-200m., 200-300m., 300一500m., and over 500m..
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