森林主伐方式之一。在预定的森林面积上定期地、重复地采伐成熟的林木和树群。择伐可使森林不断实现局部更新,地面始终保持森林覆被,因而形成的森林是异龄复层林,能充分发挥森林的生态效益,但设备效益不能较好发挥,成本较高。
北京林学会 关键词: 择伐,北京杨,人工林,蓄积量,木材性质 [gap=873]Key words: Selective cutting,Populus×Beijingensis,Plantation,Volume quantity,Wood property
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... 择伐 selective felling 择区放牧 selective grazing 选择性杀草剂 selective herbicide ...
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择伐林 [林] selection forest ; culled forest ; foreste a taglio selettivo
择伐作业 [林] Selection method ; Femel system ; Selection system
群状择伐 [林] group-selection cutting
带状择伐作业 Strip selection method ; Selection border cutting method
择伐式疏伐 selection thinning ; Plenter-thinning
育林择伐 silvical selection cutting
经营择伐 [林] intensive selection cutting ; [林] management selection cutting
定期择伐作业 periodic selection system
择伐式间伐 Selection felling
During measure time,the select cutting with less density made less mean respiration of roots,moderate and large density made large mean respiration of roots.
在观测期内,较小的择伐强度产生较小的枯枝落叶层呼吸速率均值,小强度、中等强度和较大强度的择伐,产生较大的根系呼吸速率均值。
参考来源 - 择伐对林地土壤呼吸影响若干问题的研究Selection cutting with some strength is a better forest cutting method to decrease N_2O emissions.
从减少N_2O排放的角度看,一定强度的择伐是比较好的森林采伐方式。
参考来源 - 采伐对东北温带森林土壤N·2,447,543篇论文数据,部分数据来源于NoteExpress
如果他预期政策不会维持很长时间,他可能选择伐树而不是种树。
If he expected that the policy would not remain for long, he might choose to fell trees instead of planting trees.
成熟的用材林应当根据不同情况,分别采取择伐、皆伐和渐伐方式。
For mature timber stands, the approaches of selection cutting, clear cutting and shelterwood cutting.
迈克尔成为了他父亲事业上的合作伙伴,那是一份他越来越喜欢的危险工作:林木择伐。
Michael became a partner in his dad's business, a dangerous occupation that he grew to love: select cutting of timber.
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