防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2015年
5期
23-24
,共2页
辽东山区%次生林%低产低效林%改造试验
遼東山區%次生林%低產低效林%改造試驗
료동산구%차생림%저산저효림%개조시험
eastern mountain of Liaoning Province%secondary forest%forest of low-yield and low-efficiency%trans-formation experiments
根据辽东山区次生林现状,分析了辽东次生林存在的低产低效的原因,并针对所存在的问题,进行了次生低效林的复层改育、整体改育、局部改造和目标树抚育择代等4种措施的改造试验,结果表明：低效林复层改育类型,10年生红松树高生长量为2.2~2.5 m、胸径2.0~2.8 cm。；整体改育类型,树高和胸径生长量分别为3.2~3.5 m和2.9~3.3 cm；局部改造类型,5年生落叶松树高和胸径生长量分别为3.4~3.6 m和3.5~3.8 cm。
根據遼東山區次生林現狀,分析瞭遼東次生林存在的低產低效的原因,併針對所存在的問題,進行瞭次生低效林的複層改育、整體改育、跼部改造和目標樹撫育擇代等4種措施的改造試驗,結果錶明：低效林複層改育類型,10年生紅鬆樹高生長量為2.2~2.5 m、胸徑2.0~2.8 cm。；整體改育類型,樹高和胸徑生長量分彆為3.2~3.5 m和2.9~3.3 cm；跼部改造類型,5年生落葉鬆樹高和胸徑生長量分彆為3.4~3.6 m和3.5~3.8 cm。
근거료동산구차생림현상,분석료료동차생림존재적저산저효적원인,병침대소존재적문제,진행료차생저효림적복층개육、정체개육、국부개조화목표수무육택대등4충조시적개조시험,결과표명：저효림복층개육류형,10년생홍송수고생장량위2.2~2.5 m、흉경2.0~2.8 cm。；정체개육류형,수고화흉경생장량분별위3.2~3.5 m화2.9~3.3 cm；국부개조류형,5년생락협송수고화흉경생장량분별위3.4~3.6 m화3.5~3.8 cm。
According to the current situation of secondary forest in eastern mountain of Liaoning Province,the rea-sons of causing secondary forest of low-yield and low-efficiency in eastern mountains of Liaoning Province were ana-lyzed.Based on the existed problems,transformation experiments of four measures (improved nursery on complex storey,overall improved nursery,local transformation and selection cutting of target trees)were conducted.Result shows that the height growth and DBH of low-efficiency forest of 10-year-old Pinuskoraiensis is in the range of 2.2-2.5 m and 2.0-2.8 cm respectively by using improved nursery on complex storey;the tree height &growth of DBH is respectively 3.2-3.5 m and 2.9-3.3 cm by using overall improved nursery ;the tree height & growth of DBH 5-year-old larch is respectively 3.4-3.6 m and 3.5-3.8 cm by using local transformation .
