Survivorship, attained diameter, height and volume of three Paulownia species after 9 years in the southern Appalachians, USA  

作　　者：Erik C.Berg Stanley J.Zarnoch W.Henry McNab 

机构地区：[1]University of Montana,Bureau of Business and Economic Research,Missoula,MT 59812,USA [2]USDA Forest Service Southern Research Station,Asheville,NC 28806,USA

出　　处：《Journal of Forestry Research》2020年第6期2181-2191,共11页林业研究（英文版）

基　　金：The authors appreciate the diligent eff orts of Virginia Gibbs,Tracy Roof,Julia Kirschman and Jacqui Adams during fi eld measurements.We thank Dr.David Loftis for his thoughtful advice during study establishment.Soil properties were from an associated study by Anne Suratt while she was a research intern at Bent Creek Experimental Forest.

摘　　要：Little is known of the tree and stand dynamics of varied species of planted Paulownia left unmanaged until harvest in the southeastern United States.We sought to remedy this lack of information needed by land managers to make informed decisions by investigating diff erences in survivorship,attained diameter breast height(DBH),diameter at ground level,total height,tree volume and standlevel volume yields of planted P.elongata,P.fortunei,and P.tomentosa in the cool-moist environment of the southern Appalachian Mountains.After 9 years,combined-species survivorship was only 27.3%.Low survivorship was likely related to several inclement weather events.P.fortunei was signifi cantly smaller in DBH and total height.Three combined-species stem(bole)volume models were developed as functions of(1)DBH squared,(2)the product DBH squared and total height,and(3)the product diameter ground line squared and total height.Mean total volume production of unmanaged stands was greatest for P.elongata and P.fortunei 4 years after planting;by the 9th year,total volume of P.elongata was greater than the other two species.Results of our study provide managers information on productivity of three species of Paulownia that can be used for estimating plantation yields.

关 键 词：DIAMETER Tree height Stand structure Stem volume PAULOWNIA 

分 类 号：S792.43[农业科学—林木遗传育种]