The Development of Cartography over the past 30 Years in the People's Republic of China

Summary

This article surveys the development of cartography in the People’s Republic of China during the three decades following its establishment in 1949, while placing modern achievements within the long history of Chinese surveying and mapmaking. It recalls early maps from the Spring and Autumn, Warring States, and Han periods; Pei Xiu’s systematic “six principles” of map construction in the Western Jin dynasty; and the nationwide surveys and Royal Complete Atlas of the early Qing dynasty. These traditions demonstrate China’s substantial historical contributions to cartography, although political corruption and foreign aggression from the late Qing period onward caused the discipline to stagnate and fall behind developments elsewhere. After 1949, cartography received sustained state support and was reorganized through unified planning, standards, and modern technology. China established rigorous geodetic control, common projection systems, standardized sheet division and numbering, and a coordinated series of map scales. First-generation 1:50,000 and 1:100,000 topographic maps were produced for almost the entire national territory, while revision of later generations and preparation of larger-scale maps were initiated. National maps at 1:1,000,000 and other small scales, together with provincial and county wall maps, supported economic construction, national defence, scientific research, culture, and education. Thematic cartography also expanded rapidly as nationwide surveys and observational networks generated increasingly reliable data. Major products covered geology and mineral resources, geomorphology, climate, soils, vegetation, agriculture, environmental pollution, disease geography, and nautical navigation. National, regional, and specialized atlases—including physical-geographical, geological, climatic, and medical works—integrated diverse evidence and provided scientific foundations for resource investigation, river-basin management, soil and water conservation, desert control, agricultural regionalization, environmental assessment, and development planning. The paper further reviews theoretical advances in map projections, cartographic generalization, geographical-name standardization, symbol design, map composition, and thematic representation, emphasizing the accurate communication of spatial patterns and regional characteristics. Considerable progress was likewise achieved in production technology. Compilation and fair drawing adopted more rational procedures, including scribing, strip masking, transparent lettering, rapid symbol transfer, diazo materials, electronic colour separation, presensitized plates, and electrographic reproduction. Research on automation produced small-scale batches or prototypes of graphic digitizers, digital plotters, scanning devices, semiautomatic lettering equipment, and stereocomparators. Software was developed for contour generation, projection transformation, sheet-layout construction, symbol plotting, digital editing, geographical analysis, and graphic output. Automatic methods were used particularly in thematic applications such as drainage-basin pollution monitoring, urban air-pollution analysis, agricultural-economic mapping, cancer surveys, and environmental evaluation. Finally, remote sensing became increasingly important for updating medium- and small-scale general maps, producing monochrome, multicolour, enhanced-colour, and composite photomaps, and compiling thematic maps from multispectral, infrared, and microwave imagery combined with field investigation. Overall, the thirty-year period transformed Chinese cartography from fragmented, inconsistent production into a standardized, scientifically grounded, increasingly mechanized and partly automated national enterprise, while creating a basis for continued technological advancement and international cooperation.