年轮

用年轮资料的EOF迭代方案重建中国西部近600年的气温序列

The recent 600 year temperature sequence in Western China rebuild using the EOF iterative formulae of tree annual ring data

落叶松木材细胞年轮内生长模型的研究

The growing model of the larch cell in a annual ring

年轮代表着每年生成的木材量。

The annual-rings represent the amount of wood formed each year .

当我们把橡木砍倒在地的时候就能看见从树干中心向树皮扩散的许多年轮。

When the tree is cut down , you can see a series of rings in the wood extending from the centre of the trunk to the bark .

科学家们通过查阅包括树木年轮、冰芯和湖泊沉积物在内的约700项记录，重现了过去2000年的主要气候事件。

Scientists reconstructed the major climate events of the past 2000 years by looking at around 700 records , including tree rings , ice cores and lake sediments2 .

树木年轮δ~（13）C含量幼龄效应的定量化探讨

A quantitative explanation of the juvenile effects of tree-ring δ ~ ( 13 ) C

树木年轮X射线检测底片的自动计数装置

Auto-numerating device for X-ray photographic plate of annual rings in wood

用X射线密度计测定木材年轮的含水率分布

The distribution of the moisture content of each growth ring in wood using X-ray densitometry

树木年轮~（13）C/~（12）C比率记录的树木生长与生态环境关系的研究

Analysis on the Relationship Between Tree-Growth and Ecology Environment by ~ ( 13 ) C / ~ ( 12 ) C Ratios of Tree Ring Cellulose

ESR方法初探树木年轮记载的气候效应

Preliminary study on the records of climatic effect in tree ring using ESR method

ICP-MS法测定松树年轮中重金属元素含量

Determination of heavy metals in tree-rings of pine trees by ICP-MS

用X射线扫描密度计测量气干材含水率及其每一年轮的水分分布。

In this paper , the moisture content and its distribution of each growth ring in air dried wood specimens have been tested by using X-ray scanning densitometer .

年轮的Ng明显地受太阳黑子活动周的影响，随着太阳周而变化，只是峰谷和峰值年要前移或后推1&2年。

The Ng of wood was prominently influenced by the period of sunspot activity and it varies with the solar period , but the values of peak and valley have been preacted 2-3 years or postponed .

研究结果表明，尽管木材的含水率和干燥工艺参数不同，板材都能在1～4h内干燥到终含水率为6%左右。年轮角度影响干燥期间的蜂窝裂；

The experimental results showed that material 25 mm thick can be dried to 6 percent moisture content in 1-4 hours .

南郑县和鸡公山地区年轮宽度与NDVI年值之间关系均不显著（P>0.05）。

In northern subtropical region , the relationship between masson pine tree-ring width and forest NDVI was not significant ( P > 0.05 ) .

南京市几种行道树年轮重金属元素含量的变化ICP-AES法测定广西黄柏中多种金属元素含量

The historical dynamics of concentrations of heavy metal in street tree rings in Nanjing , China Determination of Contents of Many Kinds of Metal Elements in Phellodendron by ICP-AES

这一结论对于定量地研究和应用树木年轮δ13C进行环境CO2和δa重建具有重要意义。

This conclusion is of great importance to the application of tree ring δ 13 C in the reconstruction of the historical variation of environmental CO 2 and δ a.

概述了环境污染、大气CO2浓度增加与树木年轮关系的研究现状，以及异常气候环境变化对树木年轮影响的最新研究进展。

The present studying situation on the correlation between radial growth and environment pollution together with atmospheric CO 2 concentration were summarized . The progress on abnormal climate environment variable influencing tree rings was discussed .

结果表明：冷杉和云杉年轮δ13C序列记录了大气CO2浓度升高引起大气CO2的δ13C下降的全球性趋势，但两者的响应程度不同。

The two δ 13 C series recorded the declining trend of δ 13 C due to the increasing concentration of CO 2 in the atmosphere , but with different response .

同一地点不同径级油松年轮宽度年表均达到极显著相关（P0.01）。2）取样地点油松径向生长与降水呈正相关而与夏季温度呈负相关。

Chronologies of different diameter classes in the same site were significantly correlated ( P0.01 ) . 2 ) Growth of P. tabulaeformis in all sites were positively correlated to precipitation and negatively correlated to temperature in summer .

用树木年轮重建天山中部近350a来的降水量

Reconstruction of Precipitation in the Recent 350 a from Tree-Rings in the Middle Tianshan Mountains

首先本文利用Matlab软件读入树木年轮图像，然后进行预处理转化为灰度图像，并进行灰度均衡化的处理，消除了图像上的部分噪声，以便更好的得到年轮线。

We first use Matlab software to read tree-ring image and convert the image to a gray-scale image . Then , we process the gray-scale image with image enhancement to eliminate the image noise . Finally , the ring lines can be extracted from the image .

树木年轮宽度的增加与温度、降水、太阳辐射、CO2浓度等气候因子有着复杂的相关关系。

Tree_ring widths are significantly correlated with some climatic factors , such as temperature , precipitation , solar radiation and increasing atmospheric CO 2 . Temperature is found to be an important climatic factor for the growth of trees in arid and semiarid regions .

建立简单的聚合物细流年轮模型，从传质基本方程出发推导扩散过程中组分的浓度变化方程，并对Fick第二扩散定律进行求解；

Based on the simple growth rings model and the Fick diffusion law , the component concentration functions were evolved . And another method was tried through the solution of the second Fick diffusion law .

采用小波分析与毛毛虫-谱分析法相结合的方法，以树木年轮为代用资料，对关中地区未来20a的5~6月份降水趋势进行预测。

The tree growth-ring proxy data are employed to analyze the precipitation trend by Wavelet analysis and singular spectrum analysis method in the central Shaanxi area from May to June in next 20 years .

纵向上，相同年轮的管胞长度和长宽比随着树干的增高先变大，在3.3m或5.3m处达最大值后又逐渐变小。

At the same ring tracheid length and length-width ratio increase progressively from the base upward , maximize at 3.3m and 5.3m , and then decrease to the top of the tree .

邻近江西分宜种源试验林，选择一片完整的鹅掌楸（Liriodendronchinense）近成熟人工林（1981年栽植），抽取33棵样本株，分年轮测定了木材基本密度和纤维长度。

Thirty three trees from a seventeen years old plantation of Chinese tulip tree ( Liriodendron chinense ) in Fenyi county , Jiangxi Province were randomly selected , and their basic density , and fiber length of each growth ring for the increment core samples at breast height were measured .

树皮年轮的研究及其意义

A Study of Annual Rings in Tree Bark and Their Significance

冰芯、树木年轮和历史文献方法；

Methods of ice core tree - ring and historical writing ;

我不知道生命的年轮还能有多久？

I do not know life , how long can ring ?