摘要
对不同立地条件下的杉木火力楠混交林进行疏伐试验，结果表明，疏伐能明显改善混交林分的光合作用强度和林地土壤肥力等生境条件。疏伐强度越大，改善的幅度也加大。不同疏伐强度对混交林分生长的影响较大。对立地条件较好的两树种处于同一林层的混交林，可采用强度疏伐，即疏伐伴生木株数占总株数的45％：而对立地条件较差、主林木居第二林层的混交林，则以弱度至中度疏伐为宜，即疏伐株数占总株数的15％～30％。
The thinning intensity experiment on the mixed stands of Cunninghamia lanceolata and Michelia macclurei under different woodland condition and its results showed that photosynthesis , soil fertility and so on habitat of the mixed stands could be improving obviously, and the more thinning intensity , the more effects. Moreover, the infection of different thinning intensity on the mixed stands growth was bigger. It was considered that the thinning of intension i. e. 45 % was adopted on the mixed stands of the primary tree get along with incidental tree under the soil condition was well. Whereas, it was weak thinning i. e. 15% to the middie thinning i. e. 30% on the mixed stands of primary tree lie secondary arrangement and its soil condition was not good.
出处
《林业调查规划》
2006年第4期106-109,共4页
Forest Inventory and Planning
关键词
杉木
火力楠
混交林
疏伐强度
疏伐效果
Cunninghamia lanceolata
Michelia macclurei
Mixed stands
Thinning intensity
Thinning effects
