Analysis on the Spatial Structure of the Spruce-Fir Mixed Stands of Coniferous and Broad-leaved Trees in the Over-logged Forest

Three parameters,which are neighborhood pattern,mingling and neighborhood comparison,are used to describe spatial structure of the spruce-fir mixed stands of coniferous and broad-leaved trees in the over-logged forest of Changbai Mountains.The neighborhood pattern of the stand is 0.504,which shows the distribution of trees in this stand is random;the average mingling in the stand is 0.81,which indicates the stand has the high mixed degree;the coniferous trees(esp.Korean pine) are dominant at DBH neighborhood comparison and height neighborhood comparison.