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timber output
相关语句
  木材产量
     Study of Simulating Management of Timber Output of Timber Plantation
     人工用材林木材产量经营模拟研究
短句来源
     Poplar and willow forests in Yugoslavia have an area of 150,000 ha, be-ing 1.5% of the national total, but the timber output is 8% of the gross national pro-duction.
     南斯拉夫共有杨柳树林地15万公顷,仅占森林面积的1.5%,但其木材产量却占全国木材总产量的8%。
短句来源
     Forest Potential Productivity (FPP) of 8 counties in Tianshan was cal culated, and the potential timber output of these counties was analyzed with Mia mi Model and Thornthwaite Memorial Model.
     本文利用Miami模型和Thornthwaite Memorial模型分析计算了新疆天山林区范围内8个 县的森林潜在生产力,并利用Thornthwaite Memorial模型分析计算了其潜在木材产量
短句来源
     The statistic data in forestry industry shows that timber output continues to increase,bamboo output is increasing greatly,and the economic benefits of forestry enterprises is enhanced.
     森林工业统计数据显示:木材产量继续回升,竹材产量大幅度上升,林化产品平稳增长,林业企业经济效益有所提高。
短句来源
     The black locust is one of the most important stand\|forming tree species, covering approximately 20% of the forested lands and providing about 18% of the annual timber output of the country.
     刺槐是匈牙利现有林分中最重要的成林树种之一 ,它覆盖 2 0 %的林地 . 匈牙利的刺槐的木材产量占全国产量的 18% .
短句来源
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  “timber output”译为未确定词的双语例句
     By the optimum design of quadratic regression for 4 factors, the regression model between fertilization, the living bamboo density and the bamboo timber output of moso bamboo stands, was established in this paper.
     采用四因素二次回归最优设计建立氮、磷、钾施肥及留竹密度与毛竹林竹材产量间的回归模型 ,同时根据投入、产出价格建立施肥和留养立竹的经济效益方程。
短句来源
     It was reported that its timber output could reach 60 t ·hm-2 for normal managing stand.
     据报道,一般经营水平下的大木竹林分,年产秆材可达60 t. hm-2。
短句来源
     Further statistical analysis showed that the leading factors enfluencing bamboo timber output were the standing culm density and the application of introgen.
     进一步统计分析表明 :留养立竹密度和施用氮肥是影响竹林产量的主导因子 ,参试各因素对产量贡献率的排序为留竹密度 >氮肥 >钾肥 >磷肥。
短句来源
     The control mode of stand density was established. According to the mode,thinning time,thinning intensity and timber output of Larix olgensis var.changpaiensis plantation of different ages under different site conditions were figured out.
     建立长白落叶松人工林分的密度定量管理模型,根据此模型确定不同立地等级不同初植密度长白落叶松人工林分在理想状态下的间伐时间、间伐强度和木材收获量,为其营林生产和科研提供参考。
短句来源
  相似匹配句对
     A STUDY ON CRITICAL OUTPUT OF LOADERS AT TIMBER YARD
     装载机在局贮木场作业的临界产量研究
短句来源
     Study of Simulating Management of Timber Output of Timber Plantation
     人工用材林木材产量经营模拟研究
短句来源
     Cost and output;
     成本与产出的关系;
短句来源
     Unique Timber
     新颖奇特的木材
短句来源
     AutoCAD Output
     AutoCAD图形输出
短句来源
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  timber output
Using principal component analysis (PCA) followed by means cluster analysis, four distinct groups are identified: income and investment owners, non-timber output owners, agriculturalists, and multi-objective owners.
      
A model was developed to estimate the stable timber output from shade stands of Cordia alliodora in coffee farms.
      
Several treatment options are generated for each stand and timber output is calculated using a comprehensive growth model.
      
Forest Potential Productivity (FPP) of 8 counties in Tianshan was calculated, and the potential timber output of these counties was analyzed with Miami Model and Thornthwaite Memorial Model.
      
Since late 80s sawn timber output has also fallen significantly, although exports revived after decline.
      
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A comprehensive discussion throughout USSR about direction andkey points for perestroika has been continued since April 1985. The Conce-ption of development for forestry to 2005 in the Soviet Union, which sum-marizes the discussion, was officially formulated in May, 1989. It's cons-cious of vital importance of forests as state largest wealth. Forestry auth-ority acting as state representative is demanded to be the sole boss of allforests. According to the Conception, to guarantee the system of centrali-zed revenue...

A comprehensive discussion throughout USSR about direction andkey points for perestroika has been continued since April 1985. The Conce-ption of development for forestry to 2005 in the Soviet Union, which sum-marizes the discussion, was officially formulated in May, 1989. It's cons-cious of vital importance of forests as state largest wealth. Forestry auth-ority acting as state representative is demanded to be the sole boss of allforests. According to the Conception, to guarantee the system of centrali-zed revenue and distribution for proper management of forests in form ofstate budget will still keep on basically, while a series of measures needto be adopted for the sake of encouraging enterprises to work effectivelyand actively. The significance of supervision and role of forest mana-gement survey, both requiring a scientific approach to manage forests, areespecially emphasized. The Conception regards the retraining of 13000--14000гесниши-forest officers of grass roots units, as a key measure to promotereform successfully. Excessive felling and undercut are common in forestexploitation. If felling budget is followed, the existing resources may all-ows to increase annual timber output up to 150-200% without any harm toenviornment. The Conception lays stress on natural regeneration, demand-ing cash pledge from logger to insure seedlings and young trees not to bedamaged. In the middle of 21 century, 30% of wood consumption would beprovided by short-rotation plantations.

1989年5月,苏联发表《2005年林业发展纲要》,明确了林业改革方向和重点:林业财政基本上仍保持国家预算制;突出了监督和森林经理的作用;基层干部林务员的地位,职工的培训受到特别重视;遵循计算采伐量,消除过伐和采伐不足,可以提高采伐量0.5—1倍;向天然更新倾斜,同时又要求工业人工林在21世纪中期成为用材的一个主要来源。

Poplar and willow forests in Yugoslavia have an area of 150,000 ha, be-ing 1.5% of the national total, but the timber output is 8% of the gross national pro-duction. The production of poplar timber in 1950 was 100,000m~3 and reached 1.2 mil-lion m~3 in 1985. Achievement was magnificent, because the timber output was 11times that of 1950.This paper gives a detailed description of the achievements and ex-p eriences of poplar breeding (especially poplar of the Aigeiros Section) inYugoslavia.Poplars...

Poplar and willow forests in Yugoslavia have an area of 150,000 ha, be-ing 1.5% of the national total, but the timber output is 8% of the gross national pro-duction. The production of poplar timber in 1950 was 100,000m~3 and reached 1.2 mil-lion m~3 in 1985. Achievement was magnificent, because the timber output was 11times that of 1950.This paper gives a detailed description of the achievements and ex-p eriences of poplar breeding (especially poplar of the Aigeiros Section) inYugoslavia.Poplars of the Aigeiros Section developed rapidly in Yugoslavia, whereresearches had been conducted on cross breeding, mutation breeding, and diseaseresistant tree breeding. Moreover, researches were conducted on the law of varia-tion of stem form, law of variation of basic wood density, and the law of variationof isoenzymes, providing data for poplar breeding. Now there are 16 clones of theAigeiros Secton.Some of them have been extended, and some of them are being test-ed. Poplars of the Leuce Section develop slowly, because of their low heritability,difficulty in vegetative propagation and rarity of productive stands. Better resultshave been obtained in the willow (especially Salix alba) breeding. 18 willow cloneshave been registered,and are being tested. Suggestions are made in this paper that inrespect of reality in China, basic researches on poplar and willow breeding shouldbe strengthened (e.g.researches on the genetic basis of parents selected for cross com-bination should be strengthened) and personnel, materials and financial supportshould be guaranteed, so that new good tree varieties may be developed and plantedat suitable sites.

南斯拉夫共有杨柳树林地15万公顷,仅占森林面积的1.5%,但其木材产量却占全国木材总产量的8%。杨木产量由1950年的10立方米,提高到1985年的120万立方米,增加了11倍,成为当今国际杨树委员会的重要成员国之一。该国杨树发展速度之所以快,与其有一支稳定的科研队伍密切相关。本文较详细地介绍了南斯拉夫杨树育种的成就和经验,并结合我国的实际情况,提出了作者的看法和建议。

The most important thing for establishing the seed garden or seed forest is to get thegenetic gains of some favorable characteristics.According to the experiment on filial genera-tion forest at Baimahe forest farm in Yongren county. The selected good stands had the fol-lowing characteristics:the genetic force of height growth which is an index of the fast growthwas 76%,and that of stock growth which is an index of high production was 48%;thegenetic gain was 36.44%,which was much highier than the project objective-supposed...

The most important thing for establishing the seed garden or seed forest is to get thegenetic gains of some favorable characteristics.According to the experiment on filial genera-tion forest at Baimahe forest farm in Yongren county. The selected good stands had the fol-lowing characteristics:the genetic force of height growth which is an index of the fast growthwas 76%,and that of stock growth which is an index of high production was 48%;thegenetic gain was 36.44%,which was much highier than the project objective-supposed to reach 3%.And more over,the selected good stands could be reconstucted in toseed forest.By using the seeds of the selected forest for silviculture,some unfavorable charac-teristics such as bending trunk or grains in the stands of P.yunnanensis canbe modified,and timber output can be increased.

建立种子园、母树林,最重要的是获得优良性状的遗传增益。本文通过永仁县白马河林场子代测定林的试验,用“滇中云南松天然优良林分的选择标准和方法”选择出的优良林分,其速生的树高生长量的遗传力为76%,丰产的蓄积生长量遗传力为47.48%,遗传增益为36.44%,已经超出项目要求3%的水平。用该方法及标准选择出来的云南松优良林分,可以经过人工改造、建立母树林,用母树林的种子造林,可以改变云南松林分中树干弯曲及木材纹理扭曲的不良特性,还可以提高云南松林分的木材产量。

 
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