Acta Geographica Sinica ›› 2016, Vol. 71 ›› Issue (5): 873-882.doi: 10.11821/dlxb201605015

• Geomorphology • Previous Articles     Next Articles

Spatial pattern of ancient city sites and its driving forces in Mu Us Sandy Land during Han Dynasty

RUAN Haobo(),WANG Nai'ang(),NIU Zhenmin,JIA Peng   

  1. College of Earth and Environmental Sciences, Research Center for Arid Area and Desert, Lanzhou University, Lanzhou 730000, China
  • Received:2015-12-07 Online:2016-05-31 Published:2016-05-25
  • Supported by:
    Key Project of National Natural Science Foundation of China, No.41530745, No.41371114

Abstract:

This paper presents an analysis of the spatial distribution of 31 city sites of Han Dynasty in the Mu Us Sandy Land based on Nearest Neighbor Index (NNI) analysis, space analysis and coupling analysis. It further explores the relationships between the spatial pattern of the sites and geographical factors. Point pattern analysis of 31 city sites indicates that, the average nearest neighbor distance of city sites is 25.5 km, which belongs to causal distributional pattern with the 4 causal distribution regions: the strong influence area of the Great Wall of the Qin Dynasty - the Straight Road of the Qin Dynasty (A), the weak influence area of the Great Wall of the Qin Dynasty - the Straight Road of the Qin Dynasty (B), southwestern cluster district (C) and northwestern cluster district (D) and the strong influence area of the Great Wall of the Qin Dynasty - the Straight Road of the Qin Dynasty (A) is the most important region with a proportion of 48.39% of the total. The city sites of the Han Dynasty in the Mu Us Sandy Land Desert are sparsely distributed in the west and densely in the east, which may be characterized as "patial agglomeration". The paper includes a discussion of factors influencing the spatial pattern of city sites, notably, human factors and natural factors. Although climate condition, landforms and water resources mainly restrict the selection of the city, human-driven forces, including political, military, and transport conditions, have played a leading role in the formation of the location and the number of the city sites.

Key words: Mu Us Desert, ancient city sites, Han Dynasty, spatial pattern, driving forces