CAJ | 학술논문

文章分析了宁夏盐池县白榆纯林及宽幅林带形成低产林和＂小老头树＂的原因,并采取强度间伐、实施抚育管理、加强有害生物的防治等措施进行改造。结果表明：①间伐对白榆树高长生影响不显著;②间伐对白榆树直径生长影响显著,且随着间伐强度的加大,直径生长也加大;③在白榆同龄林中,间伐后不同密度的林分,单位面积上的蓄积量及其增长率是不同的;密度为1 620株/hm2的林分蓄积量最大,2010年时蓄积量为47.3 m3/hm2;密度为470株/hm2的林分蓄积量最小,为27.4 m3/hm2;蓄积增长率则与间伐强度呈正相关。
문장분석료저하염지현백유순림급관폭림대형성저산림화＂소로두수＂적원인,병채취강도간벌、실시무육관리、가강유해생물적방치등조시진행개조。결과표명：①간벌대백유수고장생영향불현저;②간벌대백유수직경생장영향현저,차수착간벌강도적가대,직경생장야가대;③재백유동령림중,간벌후불동밀도적림분,단위면적상적축적량급기증장솔시불동적;밀도위1 620주/hm2적림분축적량최대,2010년시축적량위47.3 m3/hm2;밀도위470주/hm2적림분축적량최소,위27.4 m3/hm2;축적증장솔칙여간벌강도정정상관。
The article analyzed the causes of forest low-yield and short trees of pure forest and its forest belts of Siberian Elm,and introduced the artificial tending techniques in Siberian Elm through experiments,such as intensity intermediate felling, tending management and pest control. The results showed that there was not significant effect of intermediate felling on tree height and growth;There was a significant effect of intermediate felling on breast-height diameter. The greater the intermediate felling, the larger the diameter; Stand volume of per unit area and increasing rate of forest stand with various intensity after felling among the forest of same age was different. The stand stocking volume was the highest with intensity of 1 620 trees/hm^2 and was of 47.3 m^3/hm^2 in the year of 2010, while that was the lowest with intensity of 470 trees/hm= and was of 27.4 m^3/hm^2. There was a positive correlation between increasing rate and intermediate felling intensity.