用该表能指导幼、中龄林的调查、设计和抚育间伐。
It can be used to guid the invetory design and thinning in the young and middle-aged forests.
不同季节，土壤的理化性质和酶活性对间伐的响应不同。
Soil physicochemical properties and soil enzymes were affected differently in different season.
(K + w)值对选择造林树种和抚育间伐具有一定的指导意义。
K + W value is specified for selecting tree species in forestation and tending thinning.
结果表明，以小径木为间伐对象的间伐作业对林分胸径分布有正面影响；
The results indicated that thinning based on small DBH had positive effect on stand distribution.
指出了抚育间伐对森林生长影响研究方面存在的问题及今后的发展趋势。
The problems existed and developing trends for the future in studies of the effects on forest growth were presented.
试验结果表明：不同的抚育间伐强度对林木的胸径生长有着极显著的影响。
Trial result showed that different intensity of tending and thinning possesses remarkable influence to woody D. B. h.
研制出了杉木间伐材炭化物吸油材料，同时对其吸油能力的影响作了研究。
Oil-absorptive material from Chinese fir thinnings are developed and its absorptive effects are also studied.
对黄平县中幼林抚育间伐存在的问题进行了分析，并提出了相应的对策建议。
The problems in the young forest tending and thinning in Huangping County were analyzed, and the countermeasures were presented.
基于以上分析，用动态规划方法建立了可变间伐间隔期的林分经营密度模型。
This study on management density model of the mobile thinning interval overcomes the shortcoming of stationary interval which the former similar researches have, and it is convenient to practice.
在生产中该密度指标可以用来检验间伐设计所确定的经营密度是否合理和可行。
The density criterions suggested could be used to testify the management density in improvement cutting designed.
断面积生长间伐效应模型的研究是林分生长和收获预估模型体系研究摘要的核心内容。
Models on thinning effects on basal growth prediction are the kernel of the model system of stand growth and yield prediction.
结果表明：(1)在1%的显著水平下，不同间伐强度对林分平均胸径的生长影响显著。
The results showed: (1) Under the 1% significant level, there was significant impact on the stand average diameter about different thinning intensities.
并就不同冠层对光吸收的贡献与树冠结构动态分析及抚育间伐修枝方面的关系进行了讨论。
Furthermore, the relationships among contribution of different layers of tree crown to light absorption, dynamic analysis of tree crown structure and thinning as well as pruning were discussed.
合理施肥能促进树脂分泌，提高对初期幼虫的胶死率，抚育间伐能显著提高杉木愈伤修复能力。
Reasonable fertilization could improve the secretion of resin so that more immature larvae were adhered to death, and intermidiation could increase greatly the recovery capacity of the trees.
对近40年生以柞树为主的天然次生林采取不同抚育间伐措施后，定位研究林分凋落物的性质。
After different thinning measures were taken in the 40-year-old nature secondary forest mainly made of oaks, fixed samples were collected to study characteristics of litters.
林分标准郁闭度达0.85以上时，胸径连年生长量已下降，株数间伐强度以不超过30%为宜。
While standard degree of closing of the plantation reached 0.85, current annual increment of DBH started to decline, and the intensity of thinning should not exceed 30%.
然而，经过一段时间后，间伐处理能够促进林分生长，从而提高了林分的稳定性和对强风的抵抗力。
However, thinning strategies could improve the stability by long-term effects on growth and development of trees against extreme wind.
对国内外学者在这些方面的研究进行了综述，简单介绍了抚育间伐对森林生长影响的模型研究进展情况。
Studies of those aspects all over the world were summarized and the model studies actuality of effects on forest growth by thinning were introduced briefly.
抚育间伐对森林生长的影响体现在很多方面，包括对林分生产力及其林分因子、林下植被及灌木、林下土壤和天然更新影响等方面。
The effects of thinning on forest growth embodied some aspects which mostly include the effects on stand productivity, stand factors, stand biomass, vegetation and shrubs under-forest, soil and so on.
贝基在一家商店里记账，约翰找到了开卡车的工作，同时为美国国家森林管理局干一份在森林里砍掉易燃矮树丛的工作(让树木变稀疏，也称抚育或间伐)。
Becky worked in a store doing bookkeeping, while John found work driving a truck and also cutting the flammable undergrowth in the forests (" thinning "them) for the US National forest Service.
贝基在一家商店里记账，约翰找到了开卡车的工作，同时为美国国家森林管理局干一份在森林里砍掉易燃矮树丛的工作(让树木变稀疏，也称抚育或间伐)。
Becky worked in a store doing bookkeeping, while John found work driving a truck and also cutting the flammable undergrowth in the forests (" thinning "them) for the US National forest Service.
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