On the relation between the evolution of natural environment and human factors and the development of urban settlement—Take the Lanzhou Valley Basin as an examples
@article{Xian1991OnTR,
title={On the relation between the evolution of natural environment and human factors and the development of urban settlement—Take the Lanzhou Valley Basin as an examples},
author={Xiaowei Xian and Linyuan Zhang and N. S. Ai and Wohlke Wihelm},
journal={Chinese Geographical Science},
year={1991},
volume={1},
pages={42-53},
url={https://api.semanticscholar.org/CorpusID:128421721}
}Lanzhou Valley Basin is composed of two smaller diamond-shaped basins striking from NW to SE and including 6 river terraces. The lower terraces remaining even and smooth are main sites for city buildings. The main function of Lanzhou urban settlement is a ferry and transport centre. Lanzhou used to be an important crossing site and post on the “silk road”, and then became a transport and trade centre in Northwest China. In the middle part of the 17th century, Lanzhou became the capital of Gansu…
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