CAJ | 학술논문

以长春市净月潭国家级森林公园樟子松人工林为对象，选取不同生长状况的样株制取胸径圆盘进行年轮测定，分析引起大树针叶枯黄、个体死亡的因素，结果表明：林分不同密度或相同密度的植株，不同年份胸径年轮生长量与健康状况存在显著差异，幼龄林和中龄林前期胸径年轮生长十分旺盛，而在中龄林的中后期则生长缓慢，部分年份年轮宽度显著变窄，呈现不规则变化。有大树针叶枯黄、个体死亡现象发生，林分密度大、郁闭度高、林龄大尤为严重；导致针叶枯黄和个体死亡的可能因素有个体的遗传性差异、个别年份的生理干旱、林分密度过大引起光合产物制造与积累受阻、立地环境不适或不良气候胁迫等。
이장춘시정월담국가급삼림공완장자송인공림위대상，선취불동생장상황적양주제취흉경원반진행년륜측정，분석인기대수침협고황、개체사망적인소，결과표명：림분불동밀도혹상동밀도적식주，불동년빈흉경년륜생장량여건강상황존재현저차이，유령림화중령림전기흉경년륜생장십분왕성，이재중령림적중후기칙생장완만，부분년빈년륜관도현저변착，정현불규칙변화。유대수침협고황、개체사망현상발생，림분밀도대、욱폐도고、림령대우위엄중；도치침협고황화개체사망적가능인소유개체적유전성차이、개별년빈적생리간한、림분밀도과대인기광합산물제조여적루수조、입지배경불괄혹불량기후협박등。
Pinus sylvestnis var.mongolica Litv.planted in Jingyuetan national forest park of Changchun was taken as ob-ject, annual ring measurement of diameter disc with different growth condition was taken to analyze the reason of turing yellow of needles of big trees and individual death , results indicated that there was significant difference between diameter annual ring increment and physical condition in different density or the same density plants ;growth of young forest and ear-lier middle frosty were very vigorous , whereas in the end of middle forestry , growth was slowly , some of annual ring width was significantly narrow down , showing irregular variation .Turing yellow of needles of big trees and individual death were observed, especially in bigger stand density , higher canopy density and older stand age ones .Following possible factors caused the phenomenon :genetic differences of individual , physiological drought in some years , obstruction of photosyn-thate manufacturing and accumulation caused by bigger stand density , inadaptable site environment or climate stress .