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  • 1978 Volume 33 Issue 1
    Published: 15 January 1978
      
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  • THE IMPROVEMENTS OF THE LOWER YELLOW RIVER
    Chien Ning, Chang Ren, Chow Yi-an, Liu Y?-lan
    1978, 33(1): 13-24. https://doi.org/10.11821/xb197801001
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    For the sake of flood and sedimentation control down-stream of the reservoirs, a study has been carried out on the ways of operation of several reservoirs in the Lower Yellow River. A program on the regulation of flow and sediment is suggested with the following purposes: (1) To reduce the rate of aggradation of the river channel by raising its sedi-ment transport capacity; (2) To guide the sediment to be deposited in the desired position; and(3) To use the sediment impounding storage of the reservoir to its full capacity so that loads in the lower reach can be lessened to a certain extent.
  • HISTORICAL VARIATIONS IN THE ADVANCE ANDRETREAT OF THE BATURA GLACIER INTHE KARAKORAM MOUNTAINS
    Shih Ya-feng, Chang Hsiang-sung
    1978, 33(1): 27-40. https://doi.org/10.11821/xb197801002
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    According to repeated measurements at the fixed station, geomorphological in-vestigation, documentary records and recalls of the local residents, the Batura Glacier’s terminus has undergone many changes during the- Quaternary and recent time.
  • THE CLIMATIC CHARACTERISTICS OF THUNDERSTORMS IN CHINA
    Koo Chen-chao
    1978, 33(1): 42-48. https://doi.org/10.11821/xb197801003
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    Using the data 1949-1959 the author analyzes the climatic characteristics of the thunderstorms in China. The map of distribution of thunderstorms in China is shown and the seasonal variations of the occurrence and the characteristics of thunderstorms in different parts of our country are discussed.It is shown that the thunderstorms activity in different parts of our country has their own peculiarities in both the synoptic aspects and the cloud physical aspects. Hence in the thunderstorm forecasting practices and hail suppression experiments we have to take these peculiarities into consideration.
  • ON THE HIGHWAY NATURAL REGIONALIZATION OF CHINA
    Geng Ta-ding, Chen Chuan-kang, Yang Wu-yang, Jiang Mei-qiou
    1978, 33(1): 49-61. https://doi.org/10.11821/xb197801004
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    The Highway Regionalization of China, which has been approved and tentatively adopted by the Ministry of Communication, is the first of its kind in China in the area of applied complex natural regionalization. It aims to bring out the regional differentiation of the natural conditions relevant to highway construction, and to provide engineering parameters and basic information on natural conditions of each region. It is worked out according to the theory of geographical zonation. Both "dominant factor" and "multiple factors" are used in selecting the criteria for iden-tifying regions.
  • INDUSTRIAL DEVELOPMENT AND CITY PLANNING IN THE CASE OF THE CHINESE COAL-MINING CITIES
    Li Wen-yan
    1978, 33(1): 63-77. https://doi.org/10.11821/xb197801005
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    To study the law of emergence and growth of coal-mining cities, analysing their particular contradictions and problems and determining the orientation of their in-dustrial development, so as to adapt to local conditions, is quite essential in promo-ting comprehensive utilization of the natural resources, planned and proportionate development of regional economy and systematical distribution of the cities.