Volume Table of Fraxinus mandshurica and Juglans mandshurica in Second Growth in Western Slope of Changbai Mountains, Jilin, China

Relationship between diameter-at-foot(D0.0),diameter at breast high without bark(D去),bark percentage(P),tree height(H) and DBH(D) of Fraxinus mandshurica and Juglans mandshurica in second growth in western slope of Changbai Mountains were studied.The standing volume models,diameter-at-foot standing volume models,and bark volume models were constructed.The ratios of D to D0.0,D去 to D of Fraxinus mandshurica and Juglans mandshurica were 0.7299 and 0.7658,0.9789 and 0.9750,respectively.The bark-percentage models and high models of Fraxinus mandshurica and Juglans mandshurica were P=129.1956D-0.6129 and P=275.4582D-0.819,and H=36.007-693.244(D+19.687)-1 and H=29.255-318.636(D+8.972)-1,respectively.The one-variable volume models,two-variable volume models,and diameter-at-foot standing volume models of Fraxinus mandshurica and Juglans mandshurica were V=0.0002D2.31 and V=0.0004D2.1232,V=0.000048D2.01077H0.870343 and V=0.000042D1.772558H1.174785,and V=0.0001D0.02.4347 and V=0.0004D0.02.0698,respectively.The one-variable bark volume models and two-variable bark volume models of Fraxinus mandshurica and Juglans mandshurica were V皮=0.0002D1.8668 and V皮=0.0003D1.7812,and V皮=0.000019D1.452649H1.14834 and V皮=0.000062D1.556608H0.714036,respectively.