干旱区绿洲城镇化进程与水资源效益的时空分异研究

选择Global Morans I和Getis-Ord Gi*两个空间关联指数和协调发展度函数探讨新疆1990、1995、2000年和2005年水资源效益的空间格局和冷热点区域演化,在此基础上对水资源效益和城镇化的协调性进行分析。结果显示:①新疆各县市水资源效益在空间上明显呈以天山北坡为核心的集聚分布状态。②新疆水资源效益冷热点区域的演化呈现出不同的演变轨迹。③新疆水资源效益与城镇化协调发展程度的空间格局演变相对稳定,协调发展程度高的区域呈现扩张趋势,协调发展程度低的区域数量收敛态势明显。二者的协调类型可分为同步协调型、水资源效益滞后型、城镇化滞后型、逐步磨合型和低级协调型5种。

Spatio-temporal Variation of Urban Development and Water Resource Benefit in Oasis Cities of Xinjiang

Based on two spatial association indices,namely Global Moran’s I and Getis-Ord,and coordinated development degree function,the spatial pattern and regional evolution of water resource efficiency of oasis cities in Xinjiang in 1990,1995,2000 and 2005 were discussed.In addition,we analyzed the coordination degree between water resource efficiency of oasis cities and urbanization level in Xinjiang.Results are as follows:(1) Water resource benefit of oasis cities in Xinjiang presented a spatial aggregated distribution around the north slope of the Tianshan Mountains.(2) The evolution of regional water resource efficiency showed different evolution process.(3) The evolution of spatial pattern of coordination development degree between water resource benefit and urbanization level was relatively stable.In detail,the regions with high coordination development degree showed an expansion trend,and the regions with low coordination development degree showed a converged trend.The coordination between water resource benefit and urbanization level can be divided into five types: synchronization coordination,lagging urbanization,lagging water resource benefit,gradually fitting,and low level coordination.