查询词典 tree ring

Presently research mainly concentrates on the tree ring in the annual ring width, the annual ring density, etc.

在以往的研究中，对树木年轮的研究主要集中在对年轮宽度、年轮密度等几个指标的量测与分析上。

From the change of the arboreal growth annual ring, we may understand trees all previous years the growth, the cultivation situation, and with the research on tree ring, we get the situation of climatic change and environmental pollution.

从树木生长年轮的变化中，我们可以了解树木历年的生长、培育情况，并且通过对树木年轮的研究，有助于我们了解当时当地气候变化、环境污染等情况。

Tree ring width and basic density of trees selected from healthy and acid rain damaged forests were analysed to evaluate the possible impacts on tree growth and wood properties.

通过对受害材与健康材的年轮宽度和基本密度的对比研究，可以看出酸雨对杨树生长产生了显著的影响。

To address the issue, we analyze the correlation and similarity of the different radii sequence and the different combination sequence with the full- ring-sample sequences, based on 642 δ13C data of cellulose fixed in tree-ring at 8 different radii of two Cryptomeria fortunei tree disks from Mt. Tianmu, a subtropical mountain of China. It suggests that 2 to 4 radii mixture sample is the better and more efficient choice for the tree-ring δ13C analysis. It had better to take samples at obtuse angle with each other when to take samples at two or three radii.

研究利用来自天目山的两个柳杉树盘的多方位的和整轮的碳同位素测试数据（共计642个），通过不同方位和不同方位组合的平均碳同位素序列与整轮碳同位素序列的关系的多角度的考查、分析发现，并不是采样的方位数越多越好，选择2~4个方位采样合并分析树轮稳定碳同位素，既经济方便又能比较好的反映一棵树的δ13C变化过程与趋势。

The study of tree ring data indicates that the width and the content of trace elements of tree ring variated obviously in the city.

通过运用树木年轮资料对环境要素进行的研究表明，在城市污染条件下，树木年轮宽度和微量元素含量均发生了明显的变异；植物叶片、树皮中某些元素或化合物的含量水平可指示大气污染程度。

Trees growing close to their thermal limit of distribution, such as at high-latitude or high-altitude upper tree-line, react to variations in temperature through its influence on cambial activity. Tree growth was mainly influenced by temperature at the upper tree-line, so there was more temperature information in tree-ring width chronology in middle Qilianshan Mountains.

祁连山中部地区森林上限的树木生长主要受温度变化的影响，年轮宽指数序列中主要包含温度变化信息，对树轮生长影响最大的气候因子为前一年12月～当年4月平均温度。

Using the tree - ring width chronologies in Kuitun River, this study investigated the relationships between tree growth and September runoff of Kuitun River.

：利用奎屯河流域树轮年表资料，分析树木生长与河流流量变化的关系，重建了奎屯河379a9月的径流量，并分析其变化特征。

High correlation between tree ring-width dependable chronologies at different elevations of these sampling sites shows that the high-frequency changes among tree ring chronologies are consistent, but there is some diversity in the low-frequency changes of tree ring chronology.

不同海拔树轮宽度可靠年表间高频变化一致， 10 a滑动的高生长和低生长的不一致则反映了低频变化的差异。

It was also found that both the content of heavy metal and its increment speed in tree rings in major urban road system were much higher than these in campus and the content of some heavy metals in tree ring in campus had been not increased with the time-lasting.

对比还发现，校园组树木年轮重金属元素含量明显低于行道树组，且上升速度大大低于行道树组，甚至校园组某些元素含量随时间无明显的上升趋势。

The tree α-cellulose δ^13C time series from 1835 to 1997 was obtained based on cross-dating tree rings age from the Tianmu Mountain, Zhejiang Province. After removing the long-term decrease trend, which is related to atmospheric CO2 concentration of the δ^13C series, we analyzed the correlation between the δ^13C and the flood/drought index of different periods. The results suggest that both the same year and the next year tree ring δ^13C are distinctly related with the spring and summer drought indices, showing that the δ^13C better responsed to the spring and summer flood/drought.

对采自天目山的柳杉树轮进行交叉定年后，测得树轮的δ^13C年序列，将δ^13C去除大气CO2趋势影响后的高频变化与不同时段的旱涝指数进行相关分析，结果显示：春夏季的旱涝指数与当年和滞后一年的δ^13C序列有着比较显著的相关性，表明树轮δ^13C对春夏季旱涝的发生有着比较好的响应。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。