云南省2006—2015年不透水表面时空扩张差异机制

Difference mechanisms of temporal and spatial expansion of impervious surface in Yunnan from 2006 to 2015

利用能完整获取的2006—2015年《云南统计年鉴》和清华大学的GAIA数据分析了全省不透水表面时空扩张特征,采用地理探测器探讨了影响不透水表面扩张的驱动因子。结果表明:1)在空间上,全省16个地州市不透水表面虽然都经历了前所未有的扩张,但是存在地域差异、扩张不均衡等问题,其中昆明市、曲靖市、红河州和玉溪市扩张较强烈;2)在时间上,全省不透水表面呈现持续加速扩张状态;3)影响全省不透水表面扩张的主要因子是第二产业、第三产业、公路里程,且不同因子之间的交互作用对不透水表面的扩张均有增强作用。

It is an important link for optimizing land and resource management and coordinating the relationship between people and land to analyze the spatio-temporal expansion characteristics and driving forces of impervious surface.But the research on the difference of impervious surface expansion and its influence mechanism in Yunnan needs to be improved.Therefore,data from 2006 to 2015 Statistical Yearbook of Yunnan and Tsinghua University􀆳s GAIA(Global Artificial Impervious Area)data are used to analyze the spatio-temporal expansion characteristics of impervious surfaces in the whole province,then the driving factors affecting expansion of impervious surfaces in Yunnan by using geographic detector is analyzed.The results are as follows:(1)From the perspective of space,from 2006 to 2015,the impervious surfaces of 16 prefectures and cities in Yunnan experienced unprecedented expansion,but there were regional differences,uneven expansion and other problems,among which Kunming,Qujing,Honghe Prefecture and Yuxi had a strong expansion.(2)In the time series,the impervious surface of Yunnan shows a state of continuous accelerating expansion.(3)The main factors influencing the expansion of impervious surface in Yunnan from 2006 to 2015 are the secondary industry,the tertiary industry and highway mileage,and the interaction among different factors has enhanced the expansion of impervious surface.The results can provide reference for understanding the mechanism of impervious surface expansion and promote sustainable development and coordinated development in Yunnan.