The Universality of Azimuth Distribution and Inter-annual Variation of δ13C in Tree Rings —A Case Study in Eastern Subtropics Areas of China
Received date: 2011-04-01
Request revised date: 2011-07-08
Online published: 2012-02-20
Copyright
After measuring respectively the δ13C annual series in different azimuths based on cross-dated tree ring age for ten years, twenty years and three years of Pseudolarix kaempferi (PK)tree discs collected from Tiamu Mountain, Zhejiang Province, Abiesfab ricraib(AF) tree discs collected from Lusan Mountain, Jiangxi Province, and Pinus massoniana(PM) tree discs collected from Purple Mountain, Jiangsu Province, the universality of the tree ring δ13C azimuth change and inter-annual variability in different species were discussed. The research result shows that the azimuth change and inter-annual variability of the δ13C in tree ring exists universally. The δ13C is different in different areas and in different species, there are differences in different species in the same region and in different individuals in the same species, the δ13C of the same individual has azimuth change in the same year and inter-annual variability in the same azimuth, etc.
Key words: tree ring δ13C; azimuth change; inter-annual variability; universality
ZHAO Xing-yun , WANG Jian , SHANG Zhi-yuan , QIAN Jun-long . The Universality of Azimuth Distribution and Inter-annual Variation of δ13C in Tree Rings —A Case Study in Eastern Subtropics Areas of China[J]. SCIENTIA GEOGRAPHICA SINICA, 2012 , 32(2) : 193 -198 . DOI: 10.13249/j.cnki.sgs.2012.02.193
Table 1 The basic information of the selected sections表1 采集样品基本信息 |
采样区 | 树种 | 样品编号 | 采样点 (区)位置 | 海拔高 度(m) | 坡向/坡度(°) | 样品雕取 年数(a) | 雕取方位 数(个) |
---|---|---|---|---|---|---|---|
天目山大树 王附近 | 金钱松 | PK-01 | 30°20′28″N 119°25′55″E | 1095 | 南坡 / 15° | 10 (未定年,以 1~10表示顺序) | 7(缺WN 方向) |
庐山植物研究所前 | 冷杉 | AF-01 | 29°35′N 115°59′E | 1400 | 南坡 / 0° | 20 (1977~1996年) | 8 |
南京紫金山 | 马尾松 | PM-01~PM-04 PM-07~PM-10 | 32°01′ ~ 32°06′N, 118°25′ ~ 118° 53′E | 400 | 东南坡-西南 坡/ 10~25° | 3 (2000~2002年) | 8 |
Fig. 1 The δ13C annual series in tree ring of Pseudolarix kaempferi at Tianmu Mountain图1 天目山金钱松树轮δ13C年序列变化 |
Fig. 2 The extreme difference annual change of the δ13C in different azimuths tree ring of Pseudolarix kaempferi at Tianmu Mountain图2 天目山金钱松树轮各方位δ13C值极差年变化 |
Fig. 3 The azimuth distribution of the tree ring δ13C extreme value of Pseudolarix kaempferi at Tianmu Mountain图3 天目山金钱松树轮δ13C极值出现的方位分布 |
Fig. 4 The δ13C annual series at eight azimuths of Abiesfab ricraib at Lushan Mountain图4 庐山冷杉8方位δ13C年序列 |
Fig. 5 The inter-annual maximum difference of the tree ring δ13C at eight azimuths of Abiesfab ricraib at Lushan Mountain图5 庐山冷杉8方位δ13C值年际间的最大差异 |
Fig. 6 The extreme difference annual change of the tree ring δ13C at eight azimuths of Abiesfab ricraib at Lushan Mountain图6 庐山冷杉8方位间δ13C值极差年变化 |
Fig. 7 The frequencies of the δ13C extremum values appearing at azimuths of Abiesfab ricraib at Lushan Mountain图7 庐山冷杉δ13C极值方位分布频率统计 |
Fig. 8 The average values of δ13C annual series among azimuths of Abiesfab ricraib at Lushan Mountain图8 庐山冷杉δ13C值的方位平均值 |
Table 2 The characteristics of azimuth distribution of δ13C in PK-01 and AF-01 tree rings by variance analysis表2 金钱松(PK-01)与冷杉(AF-01)树轮δ13C方位分布的方差分析特征 |
变 异 来 源 | 自由度 DF | 方差 SS | 均方 MS | 检验值F | 显著值 F0.01 | |
---|---|---|---|---|---|---|
PK-01 | 方位间变异 方位内变异 总变异 | 6 63 69 | 5.73 5.649 11.382 | 0.955 0.09 0.165 | 10.66 13.43 | 3.12 2.72 |
AF-01 | 方位间变异 方位内变异 总变异 | 7 152 159 | 2.499 66.701 69.2 | 0.357 0.439 0.435 | 0.94 7.69 | 2.76 2.0 |
Fig. 9 The azimuth changes of the tree ring δ13C from 2000 to 2002 of eight Pinus massoniana at Nanjing Purple Mountain图9 南京紫金山8棵马尾松树轮2000~2002年δ13C值方位变化 |
The authors have declared that no competing interests exist.
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
/
〈 |
|
〉 |