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   幼苗动态 在 林业 分类中 的翻译结果: 查询用时:0.081秒
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幼苗动态
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  “幼苗动态”译为未确定词的双语例句
    MATHEMATICAL MODEL FOR DYNAMICS OF SEEDS, SQUIRRELS AND SEEDLINGS IN THE KOREAN PINE FOREST
    红松林种子、鼠类和幼苗动态数学模型
短句来源
    Regenerative Seedlings Dynamics of Natural Sabina vulgaris Community in Mu Us Sandland
    毛乌素沙地天然臭柏居群有性更新幼苗动态研究
短句来源
    1.Studying on the community dynamics during ecological restoration of the wind-damage slash in Jinyun mountain. The seeding dynamic, community structure andspecies diversities of the wind-damaged slash after 11-year restoration were studied.
    1.本文对缙云山风灾迹地森林群落在11年恢复过程中的幼苗动态、群落结构、植物物种组成以及物种多样性的变化进行了研究。
短句来源
    Applying ordination of DCA to classify Picea schrenkiana seedlings microsite into three types:herb-moss habitat type,non-ground layer habitat types,litter habitat type.
    在天山云杉更新幼苗动态方面,运用了DCA排序方法分析表明,幼苗更新生境可分为草本苔藓、无地被物和枯落物三种微生境类型。
短句来源
    For the purpose of understanding dynamics of sexual regeneration seedlings of Sabina vulgaris communities in Mu Us sandland,we had investigated continuously for six years.
    采用定位监测的方法,对毛乌素沙地天然臭柏居群有性更新幼苗动态进行6年的连续调查。
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  seedling dynamics
Pollenflow, seedling dynamics, and the genetic structure of Heloniopsis orientalis (Thunb.) C.
      
Studies of seedling dynamics suggested restricted recruitment by means of seed.
      
To understand the effects of pocket gopher disturbances on alpine seedling dynamics, we examined the gopher disturbances' effects on seedling emergence and survival on gopher disturbances 0 to 5 years old.
      
Comparative studies on acorn and seedling dynamics of fourQuercus species in an evergreen broad-leaved forest
      
The impact of 'available area' onArtemisia tridentata seedling dynamics
      
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  seedling dynamics
Pollenflow, seedling dynamics, and the genetic structure of Heloniopsis orientalis (Thunb.) C.
      
Studies of seedling dynamics suggested restricted recruitment by means of seed.
      
To understand the effects of pocket gopher disturbances on alpine seedling dynamics, we examined the gopher disturbances' effects on seedling emergence and survival on gopher disturbances 0 to 5 years old.
      
Comparative studies on acorn and seedling dynamics of fourQuercus species in an evergreen broad-leaved forest
      
The impact of 'available area' onArtemisia tridentata seedling dynamics
      
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In this paper, the dynamic behavior of a kind of red pine woods ecological system is studied by using systematic analysis method and main factors that affect the evolution of red pine voods ecological system: red pine nut, rats, seedling and their change process are discussed. The conditions for the existence of spatial periodic solution and dynamic equilibrium of the system are obtained.

本文利用系统分析的方法 ,研究一类红松林生态系统的动力学行为。讨论影响红松林生态系统变化的主要因素 :红松种子、鼠类和幼苗的动态关系的变化性态 ,从而得到该系统达到动态平衡的条件

In this paper, systematic analysis method is used to study the dynamic behavior of a kind of red pine woods ecological system. The main factors that affect the evolution of red pine woods ecological system:red pine nut, rats, seeding and change character of their dynamic relation are discussed. The dynamic equilibrium condition of the system is obtained.

利用系统分析的方法 ,研究一类红松林生态系统的动力学行为。讨论影响红松林生态系统变化的主要因素 :红松种子、鼠类和幼苗的动态关系的变化性态 ,从而得到该系统达到动态平衡的条件

For the purpose of understanding dynamics of sexual regeneration seedlings of Sabina vulgaris communities in Mu Us sandland,we had investigated continuously for six years. Results indicated that:The annual average increment rate of seedlings height and crown width was about 24.69% and 44.48% respectively. The trendline of seedlings height and crown width was ascendling. The dynamic variation rate of tolal numbers of seedling was 31%, death rate of marked seedlings was 8^88%, indicating that the increased rate...

For the purpose of understanding dynamics of sexual regeneration seedlings of Sabina vulgaris communities in Mu Us sandland,we had investigated continuously for six years. Results indicated that:The annual average increment rate of seedlings height and crown width was about 24.69% and 44.48% respectively. The trendline of seedlings height and crown width was ascendling. The dynamic variation rate of tolal numbers of seedling was 31%, death rate of marked seedlings was 8^88%, indicating that the increased rate was higher than death rate, showing regenerative condition was well. Three seedlings that height over 20 cm were dead within five year, about 7.89% of total tead seedlings. The death rate of seedlings declined gradually with increasing of seedlings height. The growth speed of seedlings that height over 20 cm reached 9.43 cm5a~{-1}, which was the most quick compared with that of other height levels. Direct ratio was revealed between growth speed and seedlings height. At the same time, linear correlative analysis was conducted on selecting meteorologic elements that might influence natural regeneration. The result showed there was the positive correlation between the average height of seedlings and winter (Nov._Mar.) rainfall, and the negative correlation between the average height of seedlings and the summer (June_Aug.) temperature. The crown width of seedlings was negatively correlated with the summer temperature. There were the positive correlations between the dynamic variation rate of total seedlings and the precipitation in winter and in spring (Apr._May). Whereas the death rate of marked seedlings was related with the annual mean temperature negatively.

采用定位监测的方法,对毛乌素沙地天然臭柏居群有性更新幼苗动态进行6年的连续调查。结果表明:臭柏幼苗苗高的年均生长率为24·69%,冠幅的年均生长率达到44·48%,均呈逐年上升趋势。样方内幼苗总株数动态变化率均值31%,编号幼苗的平均死亡率8·88%,幼苗株数的增长大于幼苗的死亡,更新状况良好。幼苗高度大于20cm的死亡株数占总死亡株数的7·89%,幼苗的死亡率呈现出随着幼苗的高度级的增加逐渐下降的趋势。臭柏幼苗生长速度以高度大于20cm的植株最快,达到9·43cm·a-1,幼苗的生长速度与幼苗的高度级成正比。对影响臭柏天然更新的气候因子进行线性相关分析表明:幼苗平均高度与冬季(11—3月)的降水量呈正相关关系;与夏季(6—8月)的气温呈负相关关系;幼苗冠幅与夏季气温呈负相关关系;幼苗的总株数动态变化率与冬季降水量和春季(4—5月)降水量均呈正相关关系,而编号幼苗的死亡率与年平均气温呈负相关关系。

 
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