There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline.
对于为什么树线以上的树木会突然停止生长，至今还没有一个公认的解释。
By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.
通过吮吸铁杉幼嫩枝的汁液，树木的生长被毛茸茸的叶蝉阻碍，导致针叶从深绿色变为灰绿色，并提早掉落。
Without the right growing conditions, trees cannot get really big, and there is some evidence to suggest tree growth could slow in a warmer world, particularly in environments that are already warm.
没有合适的生长条件，树木就不能长得很高大。还有一些证据表明，在世界气候温暖的时候，尤其是在原本已经很温暖的环境里，树木的生长可能会放缓。
Critical value of salinity tolerance should be determined during tree growth period.
树种耐盐临界值，应以林木生长期测定为准。
This implies that the computation on stable cut-points may not be considered during the tree growth.
这一结论表明在连续值属性决策树的产生过程中，平衡割点处的分割一般广义熵不需要计算。
At around time 100, tree growth is more visible, but at time 120, more fires begin and the process cycles.
在大约time 100，树木生长更为明显，但在time 120时，起火更多，过程循环。
In the soil of marriage, let two character of tree growth, free nature can harvest the fruits of happiness.
在婚姻的土壤中，让两棵个性之树自由成长，自然可以收获幸福的果实。
Also, the tree growth and the soil enzyme activity of mixed stand were all better than that of the pure stands.
在树木生长表现和土壤酶活性发挥方面，混交林优于纯林。
First, cleaning up a forest after a fire or storm does not necessarily create the right conditions for tree growth.
首先，在大火或者暴风雨之后的清理并不一定会给树的生长提供合适的生长环境。
This paper forms competition index by means of principle elements analysis and sets up individual tree growth model.
本文用主成分分析的方法构造竞争指标并建立单木生长模型。
The dreadful placement of the cart path has led to tree growth and a ridiculously narrow fairway for such a grand hole.
在购物车的道路可怕的安置，导致林木生长在右侧的蒸汽，并为这样一个大洞，球道窄可笑。
Monoecy was significantly associated with the tree growth form and was relatively common in seasonal forest vegetation.
雌雄同株异花与乔木生活型显著相关并在季节性雨林植被中相对普遍。
At the typical environment, the tree growth may basically follow the regulation of progressive decrease with the increased age .
在典型的取样环境中，树木生长多遵循缓慢递减的规律，作生长量订正时，可采用传统的树木年轮学订正方法。
The research results provide methods for the control of fruit tree profile spray and collecting information on fruit tree growth.
研究结果为果树仿行喷雾控制和果园果树生长信息采集提供了技术方法。
A similar project in South America challenged that assumption when it recorded surprise levels of tree growth a decade ago, Lewis said.
在南美洲的一个类似项目挑战了这个假定，它记录了去过十年间树木惊人的成长水平，路易斯说。
There is still no universally agreed-on explanation fir why there should be such a dramatic cessation of tree growth at the upper timberline.
目前还没有一个普遍认同的解释来说明为什么会在树带界线上出现树木停止生长这种戏剧化的现象。
By canonical correlation analysis, sampling time was selected, and foliar mutriment elements closely related to forest tree growth were determined.
用典型相关分析方法选择采样时间、确定与林木生长有密切关系的叶片养分元素。
Based on the site classification and site evaluation, the matrix models (size class model) and individual tree growth model was developed in this paper.
本文在对落叶松人工林进行立地分类和立地质量评价的基础上，建立了落叶松人工林的矩阵模型和单木生长模型。
The dreadful placement of the cart path has led to tree growth on the right side of the steam and to a ridiculously narrow fairway for such a grand hole.
在购物车的道路可怕的安置，导致林木生长在右侧的蒸汽，并为这样一个大洞，球道窄可笑。
Study the effects of branch drawing on the tree growth, light environment, fruit quality and yield of jujube in direct seeding close planting jujube field.
拉枝对直播密植枣园树体生长、光环境以及枣果产量和品质的影响。
And time behind us, as old as the fireworks. about tree growth we can not Omega watches, can not know the length of his life. but we can not let the mind barren.
和时间，在我们的身后，如烟花爆竹的旧。树的生长，我们不能欧米茄手表，不知道他的生命的长度。但我们不能让心灵的荒芜。
The results showed that potassium application could raise the SPAD-502 chlorophyll test value, promote citrus tree growth, increase fruit yield and improve quality.
结果表明，施钾能有效地提高叶绿素值、促进树体生长、提高果实产量和改善品质。
Additional tree growth on the horizon near the highway gives testimony to the ease with which, woody plants grow in this moist mild climate and these fertile soils.
公路旁的另一棵树也几乎轻易地印证了那些成长在潮湿温润的气候下，根植于肥沃富饶的泥土中的树木常常郁郁葱葱，绿树成荫。
From tree growth response to climate factors in the two regions, we can be informed that tree growth is mainly controlled by both the pre - and the early time of growing season.
从两个区域年表对各自气象站气候因子的响应可以看出，树木的生长都主要受到生长季前期和生长季早期降水量的支配。
The acid deposits have not only directly affected on tree growth but also indirectly through the acidification of forest soil which is probably one of the facts that cause forest decline.
酸性沉降不仅对林木生长产生直接影响，而且通过土壤还对林木产生间接影响。
With the way of runoff plots, effects of the different ways of sod in the eroded slope orchard on soil erosion, soil fertility, fruit tree growth, the output and quality of fruit were studied.
采用径流小区法研究果园不同生草方式对土壤侵蚀、土壤肥力、果树生长、果实产量和品质的影响。
The results showed that the integrated cultural practices not only raised the tree growth and the nut yield, but also increased the content of organic matter and improved the fertility of soil.
结果表明：组装配套栽培措施不仅可以促进树体生长和大幅度提高产量，同时也能提高土壤有机质含量和改善土壤肥力状况。
The young trees of open-center shaped Housui pear were used as the material to study the effect of different pruning rate(light, heavy and no) on the pear tree growth, fruiting and root growth.
以开心形丰水梨幼树为试材，通过轻剪、重剪和不修剪处理对其树体生长指标、产量、根系分布度进行比较分析。
The young trees of open-center shaped Housui pear were used as the material to study the effect of different pruning rate(light, heavy and no) on the pear tree growth, fruiting and root growth.
以开心形丰水梨幼树为试材，通过轻剪、重剪和不修剪处理对其树体生长指标、产量、根系分布度进行比较分析。
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