漳州长泰区米老排纯林及其混交林模式探究

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关键词米老排;尾巨桉；造林模式；林分生长

中图分类号 S792.99 文献标识码A 文章编号 1007-7731（2025）15-0038-04

DO1号10.16377/j.cnki.issn1007-7731.2025.15.010

Researchonthepureforestandmixed forestmodelsofMytilaria laosensisin Changtai District， Zhangzhou City

LIAO Zhiming

（ForestryBureau ofChangtaiDistrict， Zhangzhou 3639OO， China）

AbstractBasedon threeaffrestation experimental plots in Yanxi State-owned Forest Farm，Changtai District， Zhangzhou City，FujianProvince，namelythepureforestofMytilaria laosensis，themixedforestofMytilarialaosensis and Eucalyptus urophylla X grandis，and the pure forest of Eucalyptus urophylla × grandis，the growth conditions of the standssuchasthediameteratbreastheight，tree heightandcanopydensityof thetreesunder thethreeafforestation models were measured from 2017to 2021.The main species and coverage rates of shrubsand herbaceous plants under the forestweredetermined in2017，2O20and2O21.Theresultsshowed thatthefast-growing performanceof Mytilaria laosensiswasgood.ThevariousindicatorsofMytilarialaosensis inthemixedforesthadslightlyincreasedcompared with those in the pure forest.The diameter at breast height，tree height and volume of Eucalyptus urophylla × grandis in the mixed forest had increased by 9.68 % 6.29% and 24.91% respectively compared with those in the pure forest of Eucalyptus urophyllX grandis，and the growth effct was obvious.The average annual growth rateof each index of the twotre species in the mixed forestwas basically higherthanthatof thecorrsponding pure forest.Withthe extension of afforestation time，the coverage rate of miscellaneous shrubs and herbaceous plants under the pureforest and mixed forest of Mytilaria laosensis had significantly decreased，with the decline rates all exceeding 85 percentage points. Therefore，theabilityofMytilaria laosensis toregulateundergrowthvegetation was superior to thatof Eucalyptus urophylla × grandis.It could be used as a preferred tree species for forest construction in the study area.Through a scientific mixed planting model with Eucalyptus urophylla × grandis， the ecological functions among tree species can be complementary，thereby promoting the improvement of regional forest qualityand the optimizationof ecological benefits.

Keywords Mytilaria laosensis; Eucalyptus urophylla × grandis; afforestation model; forest stand growth

米老排是金缕梅科速生用材树种和保水丰产树种。（剩余4925字）