Abstract: Correlative statistics and group analysis of 8 elements contents of 303 tree ring samples of Pinus thunbergii and Pinus massoniana at mining area of Xixia Mountain show that the enrichements of K, Ca, Mg and Pin tree rings and their correlations are not influenced bymining activities, while the correlations among Cu, Pb, Zn and Mn are related to the landsurface subsidence in a certain extent, due to open mining or shallow pit mining.Themining sector is characterized by the combination types of K-P, Mg-Zn and Ca-Mn, andits surrounding area is characterized by those of K-P and Mg-Mn.

Key words: Polymetal mine, Element content of tree ring, Xixia Mountain, landscape pattern, ecological risk, spatial auto-correlation., geostatistical feature, temporal and spatial change