1) thinning interval
抚育间伐间隔期
2) time for first intermediate cutting
初始抚育间伐期
3) thinning
[英][θin] [美][θɪn]
抚育间伐
1.
The thinning experiments on the natural secondary forest of Pinus massoniana;
马尾松天然次生林抚育间伐试验研究
2.
Techniques of Thinning and Pruning in Plantations of Pinus ellottii;
湿地松林抚育间伐与修枝技术
3.
Thinning Effects and Technologies of Mixed Forest of Artificial KoreanPine and Natural Regenerated Deciduous Broadleaved Trees in Liaodong Region;
辽东地区阔叶红松混交林抚育间伐效果及其技术的探讨
4) tending and thinning
抚育间伐
1.
Different tending and thinning intensity impact D.
抚育间伐是培育森林的1项重要营林措施,同时又可以早期利用其木材的主要途径。
2.
With start-up period of tending and thinning in 2004, sum up experiences, carry out the tending and thinning of the man-made plantation that performs the best with mechanical thinning intensity by Pn = 33%.
天保工程实施以来,工程区停止一切商品性采伐,2004年随着抚育间伐的启动,总结抚育间伐试验,进行人工商品林抚育间伐以Pn=33%的机械间伐强度为最好,不仅能提高林分平均直径生长量、林分的生长率、单位面积的蓄积量,还能提高生态防护效能。
3.
Through study on test of intensity effect of tending and thinning for plantation of Pinus Massoniana for 15 years, the result shows that the intensity thinning performs the best in growth effect of DBH and single volume, the volume of the intensity and thinning is the biggest; and different thinning and intensity has non clear influence to trees height and total harvest volumeof the stand.
通过对15a生的马尾松人工林进行抚育间伐强度效应试验研究,结果表明:强度间伐对胸径和单株材积生长效应最佳,强度间伐的蓄积量最大;不同间伐强度对树高生长和林分总收获量无显著影响。
5) intermediate cutting
抚育间伐
1.
Sustainable control effect of Tomicus piniperda by intermediate cutting;
抚育间伐持续控制松纵坑切梢小蠹效果研究
2.
Fixed position observation site and temporary site in Pinus yunnanensis pure forests were set to study the effects of intermediate cutting on structure features and biodiversity.
为了了解抚育间伐对云南松纯林的结构和多样性影响,在云南松纯林内设置抚育间伐和未间伐的定位观测样地和临时样地,通过对所设置的样地进行调查测定分析,并以空间代时间对同一立地条件中抚育间伐22 a后的云南松林及未间伐的云南松林物种多样性进行了对比分析。
3.
Bionomics of Tomicus piniperda was analyzed,the mathematical model of complex adaptive system of Tomicus piniperda is established by analysis sustainable control effect of Tomicus piniperda by different levels of intermediate cutting,and discusses the convergence of the model.
根据松纵坑切梢小蠹的主要生物学特征,通过分析抚育间伐持续控制松纵坑切梢小蠹虫害的机理,应用复杂适应系统(CA S)理论,建立了模拟松纵坑切梢小蠹虫害的一种动态演化数学模型,并讨论了模型的收敛性。
6) tending thinning
抚育间伐
1.
And the effects of tending thinning were discussed in several aspects: the growth of crown, the growth of diameter, the growth of height, fruiting, resistance of trees & the effects of environment conditions and management benefits.
介绍了玄武岩落叶松母树林的生态特点及林分类型,并从树冠生长、直径生长、树高生长、结实、林木抗性及环境条件影响和经营效益6个方面对抚育间伐的效果进行了讨论。
2.
The present situation of tending thinning for middle-aged and young plantation was reviewed based on the investigation carried out in Nanping,Shanming etc.
本文通过对福建省南平市、三明市等地的中幼林抚育间伐工作的调查,总结了福建中幼林抚育间伐开展基本情况,分析了存在问题,提出了推进中幼林抚育间伐的对策建议。
3.
Different tending thinning intensity has an impact on the diameter,height and volume growth of tree.
抚育间伐是培育森林的重要营林措施之一,同时又是早期利用木材的主要途径。
补充资料：平均故障间隔期（MTBF）
MTBF分析法是指可以修理的设备从故障起到下一次故障为止，若干次的时间平均值。各企业应用MTBF分析法来分析%26ldquo;设备的所有停机进行维修作业%26rdquo;是怎样发生的，把发生的各种问题记录后作成分析表，从而找出%26ldquo;减少维修作业研完%26rdquo;的重点，提高设备的可*性和维修性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条