CAJ | 학술논문

通过树木年轮学方法,研究了树木性别、大小、邻体竞争和气候因子(温度和降水)对东北红豆杉(Taxus cuspidata):径向生长的影响.研究表明,性别和树木大小对东北红豆杉径向生长影响显著,雄株的径向生长速率显著大于雌株(p=0.023).东北红豆杉雌、雄植株径向生长速率均与邻体竞争强度显著负相关(p<0.05),并且邻体竞争对雌株径向生长的负效应更大.树木气候学分析表明,东北红豆杉雌、雄植株径向生长对气候因子的响应不同.雌株径向生长量与前一年8月、前一年lO月平均温度显著负相关,雄株径向生长量与月平均温度不显著相关.雌株径向生长量与当年1月的降水量显著负相关,而雄株径向生长量与当年8月的降水显著负相关.
통과수목년륜학방법,연구료수목성별、대소、린체경쟁화기후인자(온도화강수)대동북홍두삼(Taxus cuspidata):경향생장적영향.연구표명,성별화수목대소대동북홍두삼경향생장영향현저,웅주적경향생장속솔현저대우자주(p=0.023).동북홍두삼자、웅식주경향생장속솔균여린체경쟁강도현저부상관(p<0.05),병차린체경쟁대자주경향생장적부효응경대.수목기후학분석표명,동북홍두삼자、웅식주경향생장대기후인자적향응불동.자주경향생장량여전일년8월、전일년lO월평균온도현저부상관,웅주경향생장량여월평균온도불현저상관.자주경향생장량여당년1월적강수량현저부상관,이웅주경향생장량여당년8월적강수현저부상관.
Aims Our objective was to address the impacts of sex, tree size, neighboring competition and climate factors on radial growth in Taxus cuspidata.Methods An integrative dendroclimatic approach was used to quantify radial growth and relate its response to climate factors.Important findings Sex and tree size exhibited significant effects on radial growth in Taxus cuspidata. Radial growth rate was significantly larger in males than in females (p=0.023) and was negatively related to neighboring competition in both sexes. Female trees were affected more negatively by neighboring competition than males (p<0.05). Dendroclimatic analysis indicated different responses to climate factors for males and females. Radial growth in females was negatively related to mean temperature in August and October of the previous year, but no significant associations to mean temperature were found in males. Radial growth in females was associated negatively with precipitation in the current January, and that of males was associated negatively with precipitation in the current August.