燕山山地蒙古栎次生林林冠下造林试验  

Experiment on afforestation under canopies of Quercus mongolica secondary forest in Yanshan mountains

作　　者：王超 尤海舟 孙浩伦 范树生 WANG Chao;YOU Hai-zhou;SUN Hao-un;FAN Shu-sheng(Hebei Academy of Forestry and Grassland Science,Shijiazhuang,Hebei 050061,China;Hebei Fengning Desert Ecosystem Research Station,Fengning,Hebei 068357,China;Chengde Luanping State Owned Forest Farm,Luanping,Hebei 068250,China)

机构地区：[1]河北省林业和草原科学研究院,河北石家庄050061 [2]河北丰宁沙地生态系统定位观测研究站,河北丰宁068357 [3]承德市滦平国有林场总场,河北滦平068250

出　　处：《河北林业科技》2023年第4期18-21,共4页Journal of Hebei Forestry Science and Technology

基　　金：中央财政林业草原科技推广示范项目——燕山山地乡土珍贵树种保护与培育技术示范推广(冀TGL[2021]002号);中央引导地方科技发展资金项目——城市滞尘降污树种筛查及配置技术研究(216Z6301G)。

摘　　要：蒙古栎次生林是燕山山地分布广泛的退化森林植被。以退化蒙古栎次生林为研究对象,强度疏伐后林分郁闭度降低至0.6,采用蒙古栎、黄檗、水曲柳、五角枫、白桦、核桃楸、紫椴7个树种开展林冠下植苗造林。试验结果表明:黄檗、水曲柳、五角枫和紫椴、蒙古栎可以作为蒙古栎次生林林冠下造林的适宜树种,白桦不宜在林冠下造林,核桃楸在林冠下造林需进一步提高疏伐强度;对林分自然更新幼树调查结果显示:蒙古栎次生林有较强自然更新能力,更新幼树种类多样,密度达1065株/hm^(2),更新树种以五角枫、春榆和大叶白蜡为主,而上层林木的主要组成树种蒙古栎、白桦和黑桦的更新能力较弱;建议根据各树种生物学特性逐步加大疏伐强度以培育近自然程度较高的混交林。Quercus mongolica secondary forest is widely distributed forest type in Yanshan Mountains.Taking the degraded Quercus mongolica secondary forest as experimental materials,which the crown density reduced to 0.6 after larger intensity thinning.The afforestation under canopies experiment of Juglans mandshurica,Phellodendron amurense,Tilia amurensis,Quercus mongolica,Fraxinus mandshurica,Acer mono,Betula platyphylla were carried out.The results showed that Phellodendron amurense,Tilia amurensis,Quercus mongolica,Fraxinus mandshurica,Acer mono are suitable afforestation tree species under canopies of Quercus mongolica secondary forest.Betula platyphylla is unsuitable tree species.Juglans mandshuricawill be able to grow which requires lower canopy density.The survey results of natural regeneration saplings showed that stand has strong natural update ability,there are various types of updated tree species,Which young tree density is 71 tree/667m^(2).The main renewal tree species are Acer mono,Ulmus davidiana var.japonica and Fraxinus rhynchophylla,but the regeneration ability of Quercus mongolica,Betula platyphylla and Betula dahurica is weak which are the main tree species of the main forest layer.It issuggested that the thinning intensity should be gradually increased according to the biological characteristics of each tree species to cultivate mixed forests with higher near-natural degree.

关 键 词：蒙古栎次生林 林冠下造林 造林树种 混交林培育 燕山山地 

分 类 号：S725.71[农业科学—林木遗传育种]