Based on materials from statistic yearbooks and investing data, the current situation of land use in Wuhan city has been analyzed, By utilizing principal component analysis and K-means clustering, a model for urban land ecological risk as- sessment was proposed. The result showed that the composite index of ecological risk of land use has a rising trend year by year, which increased from -1.0033（Ⅴ） in 2003 to 0.5575（ Ⅱ ） in 2010, and the rank of ecological risk decreased from the best degree to the bad degree. Based on the assessment resu...
