| 1. | Tree thinning was employed in later years .
在以后几年进行间伐。 |
| 2. | Thinning had no significant effects on total yield in 12 years after thinning
但间伐没有显著地增加12年间的总收获量。 |
| 3. | Effects of thinning intensity on the development of undergrowth in pinus tabulaeformis plantations
间伐强度对油松人工林植被发育的影响 |
| 4. | Effects of different intermediate cutting intensities on growth of man - made broad - leaved and korean pine mixed forests
不同间伐强度对人工阔叶红松林生长的影响 |
| 5. | Also , the feasibility of manufacturing ul - mdf using china fir - thinning as raw material was discussed
研究探讨了利用杉木间伐小径材为木材原料生产超轻质中密度纤维板的可行性。 |
| 6. | Results showed that thinning had a significant effect on residual stand growth , but there was no significant difference between medium and heavy thinning treatments
结果表明：间伐促进了保留木生长的显著增加，但不同间伐强度间无显著差异。 |
| 7. | Our mode is to cut trees every year and the same time we plant the trees in order to improve the economic benefit and be propitious to beautify the environment
我们采用逐年间伐逐年补栽循环用材的模式,既有利于提高经济效益,又有利于绿化美化环境属生态型经济 |
| 8. | Evergreen broad - leavedforest is classified into three types as follows : nurture type of early sapling forest , intemediate cutting type of medium sapling forest , density management type of mid - maturation forest
将阔叶林划分为3个经营类型,分别为:初期幼龄林组成抚育类型、中期幼龄林抚育间伐类型、中龄林密度管理类型。 |
| 9. | Thinning stands with the thinning intensity of about 20 % and 30 % had no significant effects on species diversity , biomass of shrub and herb , and physical properties of soil
各林分的树种组成在12年间基本没有发生变化，即间伐没有显著地改变林分的树种组成，目前的树种组成即落叶松、其他针叶树（云杉、冷杉和红松）和阔叶树组成比约为6 : 3 : 1可能是相对稳定的群落。 |
| 10. | The strategy and measures to prevent the soil degradation of pinus sylvestris var . mongolica were put forward , including application of thinning rationally for existing dense plantations and establishment of mixture forest for new plantations
解决当前人工林退化的主要措施是因地制宜进行间伐或轮伐，改善林地微生态条件，尽量避免营造人工纯林，建议营造混交林。 |
