目标树经营对油松人工林生长的影响  

Effects of crop tree management on the growth of Pinus tabulaef ormis plantation

作　　者：房子怡 贾彦龙[1] 许中旗[1] 马荣 张颂安 FANG Ziyi;JIA Yanlong;XU Zhongqi;MA Rong;ZHANG Songan(College of Forestry,Hebei Agricultural University,Baoding 071000,China;Mulanweichang National Forestry Administration of Hebei Province,Weichang 068450,China)

机构地区：[1]河北农业大学林学院,河北保定071000 [2]河北省木兰围场国有林场管理局,河北围场068450

出　　处：《林业与生态科学》2023年第2期131-135,144,共6页Forestry and Ecological Sciences

基　　金：科技部重点专项课题(2017YFD0600500)。

摘　　要：为了解目标树经营对油松生长的影响,以冀北山地典型油松人工林为研究对象,对采取目标树经营及未经营的油松人工林的径生长进行了比较分析。研究结果表明,目标树经营实施4年后,油松人工林的径级结构明显向右偏移,对照样地的径级结构则未发生明显变化;经营样地平均木胸径和胸高断面积年生长量分别为对照样地的1.55倍和1.81倍(P<0.05);目标树胸径及胸高断面积生长量分别为平均木的1.24~1.58倍和1.55~2.01倍(P<0.05);目标树经营明显促进了大径级林木的蓄积生长量,经营样地大径级(DBH>20 cm)林木生长率为对照样地的1.33倍;油松对目标树经营措施响应迅速,采取经营措施后,经营林分与对照林分的胸径生长过程出现明显分化。由此得出结论,目标树经营措施明显促进了油松人工林目标树的生长,达到了培育优质大径材的目标。To understand the effect of crop tree management on the growth of Pinus tabulaeformis,taking the typical P.tabulaeformis plantation in northern Hebei Province as the research object,the diameter growth of P.tabulaeformis plantation with and without crop tree management were compared and analyzed.The results showed that after four years of crop tree management,the diameter class structure of P.tabulaeformis plantation shifted to the right obviously,while the diameter class structure of the control plantation did not change significantly;The annual increment of average trees DBH(Diameter at Breast Height)and basal area of crop management plots were 1.55 and 1.81 times of the control plots(P<0.05);The growth of DBH and basal area of crop tree were 1.24~1.58 times and 1.55~2.01 times of the average tree,respectively(P<0.05);The crop tree management obviously promoted the stock growth of large-diameter trees,and the growth rate of large-diameter trees(DBH>20 cm)was 1.33 times that of the control plots;P.tabulaeformis responded quickly to the crop tree management measures.After management measures were taken,the growth process of DBH between management stand and control stand showed obvious differentiation.It was concluded that the crop tree management measures obviously promoted the growth of crop trees in P.tabulaeformis plantation,and reached the goal of cultivating high quality large diameter timber.

关 键 词：目标树经营 油松林 间伐 连年生长量 胸高断面积 

分 类 号：S791.254[农业科学—林木遗传育种]