生态约束下的采伐更新与局部生态系统稳定性研究

Studies on Felling Regeneration Under Ecological Limit and Stability of Local Ecosystem

一切采伐作业都必须在一定的生态约束下进行,这样有利于林木更新生长。通过对富阳等三市(县)1994～1997年的作业伐区和正在作业的伐区进行随机调查,探讨了不同采伐方式、采伐强度和采伐作业技术对林木更新、保留木、景观破碎化及物种多样性的影响程度,提出了为维持局部生态系统的稳定性,生态约束下主要多功能用材林的采伐更新技术。

Harvesting operation under ecological limit is beneficial to regeneration and growth of forest. Through investigating the cutting areas which were operated in 1994～1997 and those under operation at present, the paper discusses the effects on forest regeneration, survival, landscape fragmentation and species diversity by different cutting methods, cutting intensity, cutting operation techniques. In order to maintain local stability of ecosystem, the felling regeneration technique of multi-function forest under ecological limit is recommanded.