华东森林经理
華東森林經理
화동삼림경리
East China Forest Management
2015年
3期
20-24
,共5页
巨尾桉%择伐%经济效益
巨尾桉%擇伐%經濟效益
거미안%택벌%경제효익
E.grandis × E.urophylla%selective cutting%economic benefit
以巨尾桉(E.grandis × E.urophylla)人工林为研究对象,对不同经营方式的林木生长状况和经济效益进行分析.结果表明:巨尾桉人工林经择伐3年后,林分结构发生了显著变化,保留木的生长速度比择伐前快;巨尾桉二代萌芽林的生长速度比新造林快;皆伐改择伐的经营方式在第一个采伐周期的经济效益虽然比皆伐低,但在第二个采伐周期后其经济效益显著高于皆伐新造林和皆伐二代萌芽林.
以巨尾桉(E.grandis × E.urophylla)人工林為研究對象,對不同經營方式的林木生長狀況和經濟效益進行分析.結果錶明:巨尾桉人工林經擇伐3年後,林分結構髮生瞭顯著變化,保留木的生長速度比擇伐前快;巨尾桉二代萌芽林的生長速度比新造林快;皆伐改擇伐的經營方式在第一箇採伐週期的經濟效益雖然比皆伐低,但在第二箇採伐週期後其經濟效益顯著高于皆伐新造林和皆伐二代萌芽林.
이거미안(E.grandis × E.urophylla)인공림위연구대상,대불동경영방식적림목생장상황화경제효익진행분석.결과표명:거미안인공림경택벌3년후,림분결구발생료현저변화,보류목적생장속도비택벌전쾌;거미안이대맹아림적생장속도비신조림쾌;개벌개택벌적경영방식재제일개채벌주기적경제효익수연비개벌저,단재제이개채벌주기후기경제효익현저고우개벌신조림화개벌이대맹아림.
Growth and economic benefit of different operation alternatives were ananalysed by taking E.grandis×E.urophylla Plantations as study object. The result showed that stand structure changed dramatically three years later selective cutting. And the growth rate of remained trees was faster than them before cutting. The growth rate of E.grandis×E.urophylla in second rotation plantations was faster than that in new plantation. The economic benefit of E.grandis×E.urophylla Plantations which used selective cutting were better than new plantations and second rotation plantations after the second selection felling cycle, althought it was worse at the first felling cycle.
