植物生态学报 ›› 2020, Vol. 44 ›› Issue (12): 1195-1202.DOI: 10.17521/cjpe.2020.0224
• 研究论文 • 下一篇
康剑1,2,3, 梁寒雪1,3, 蒋少伟1,2,3, 朱火星1,3, 周鹏1,2,3, 黄建国1,2,3,*()
收稿日期:
2020-07-06
接受日期:
2020-09-16
出版日期:
2020-12-20
发布日期:
2021-04-01
通讯作者:
黄建国
作者简介:
*(huangjg@scbg.ac.cn)基金资助:
KANG Jian1,2,3, LIANG Han-Xue1,3, JIANG Shao-Wei1,2,3, ZHU Huo-Xing1,3, ZHOU Peng1,2,3, HUANG Jian-Guo1,2,3,*()
Received:
2020-07-06
Accepted:
2020-09-16
Online:
2020-12-20
Published:
2021-04-01
Contact:
HUANG Jian-Guo
Supported by:
摘要:
阿尔泰山的北方森林是中亚以及全球的生态系统的重要组成部分, 其生长动态可以影响到全球范围的热辐射、碳平衡等。因此, 探究影响阿尔泰山树木径向生长的主要因素至关重要。该研究以新疆喀纳斯国家级自然保护区的西伯利亚五针松(Pinus sibirica)为研究对象, 建立西伯利亚五针松年表, 通过分析不同时间间隔累年生长量、竞争指数以及气候因子之间的关系, 运用线性混合效应模型、相关分析等方法, 探究竞争和气候对新疆阿尔泰山西伯利亚五针松树木径向生长的影响。结果表明: (1)线性混合效应模型结果显示竞争树胸径和与西伯利亚五针松过去30年的累年生长量之间的拟合效果最好; (2)标准年表与3月的平均气温、平均最高气温、平均最低气温之间有显著正相关关系; (3)累年生长量最高值出现在气温0-5 ℃, 竞争指数低于100的时候。累年生长量最低时, 气温达到-10 ℃, 竞争指数也超过了300。目标树的树木径向生长受到竞争树胸径和及生长季前期气温的影响, 两者共同作用。但相较于气候因子而言, 竞争对西伯利亚五针松的树木径向生长有更大的影响作用。
康剑, 梁寒雪, 蒋少伟, 朱火星, 周鹏, 黄建国. 竞争和气候对新疆阿尔泰山西伯利亚五针松树木径向生长的影响. 植物生态学报, 2020, 44(12): 1195-1202. DOI: 10.17521/cjpe.2020.0224
KANG Jian, LIANG Han-Xue, JIANG Shao-Wei, ZHU Huo-Xing, ZHOU Peng, HUANG Jian-Guo. Effects of competition and climate on tree radial growth of Pinus sibirica in Altai Mountains, Xinjiang, China. Chinese Journal of Plant Ecology, 2020, 44(12): 1195-1202. DOI: 10.17521/cjpe.2020.0224
图1 新疆阿尔泰山研究区1958-2017年月平均气温、月平均最低气温、月平均最高气温和月降水量的变化趋势。
Fig. 1 Variation trend of monthly mean air temperature (T), monthly mean minimum air temperature (Tmin), monthly mean maximum temperature (Tmax) and monthly precipitation (P) in the research area of Altai Mountains, Xinjiang from 1958 to 2017.
年表长度 Chronology length | 平均敏感度 Mean sensitivity | 标准偏差 Standard deviation | 样本相关系数 Correlation coefficient for all series | 信噪比 Signal-to-noise ratio | 样本总体解释量 Expressed population signal |
---|---|---|---|---|---|
1808-2017 | 0.19 | 0.30 | 0.24 | 13.30 | 0.93 |
表1 新疆阿尔泰山西伯利亚五针松的标准年表主要特征参数
Table 1 Main characteristic parameters of the standard chronology of Pinus sibirica in Altai Mountains, Xinjiang
年表长度 Chronology length | 平均敏感度 Mean sensitivity | 标准偏差 Standard deviation | 样本相关系数 Correlation coefficient for all series | 信噪比 Signal-to-noise ratio | 样本总体解释量 Expressed population signal |
---|---|---|---|---|---|
1808-2017 | 0.19 | 0.30 | 0.24 | 13.30 | 0.93 |
竞争树密度(株·hm-2) N (individual·hm-2) | 竞争树胸径和 SDBH (m·hm-2) | 竞争树胸高断面积和 SBA (m2·hm-2) | ||||||
---|---|---|---|---|---|---|---|---|
最大值 Max | 平均值 Mean | 最小值 Min | 最大值 Max | 平均值 Mean | 最小值 Min | 最大值 Max | 平均值 Mean | 最小值 Min |
1 800 | 1 153 | 800 | 369.4 | 206.7 | 69.8 | 97.5 | 41.3 | 10.8 |
表2 新疆阿尔泰山西伯利亚五针松竞争指数特征参数
Table 2 Characteristic parameters of competitive indices of Pinus sibirica in Altai Mountains, Xinjiang
竞争树密度(株·hm-2) N (individual·hm-2) | 竞争树胸径和 SDBH (m·hm-2) | 竞争树胸高断面积和 SBA (m2·hm-2) | ||||||
---|---|---|---|---|---|---|---|---|
最大值 Max | 平均值 Mean | 最小值 Min | 最大值 Max | 平均值 Mean | 最小值 Min | 最大值 Max | 平均值 Mean | 最小值 Min |
1 800 | 1 153 | 800 | 369.4 | 206.7 | 69.8 | 97.5 | 41.3 | 10.8 |
时间间隔 Time interval (a) | 竞争指数 Competition indices | a | b | 临界R2 Marginal R2 | 条件R2 Conditional R2 |
---|---|---|---|---|---|
5 | N | 0.098 3 | 0.000 0 | 0.09 | 0.59 |
SDBH | 0.082 9 | -0.000 1 | 0.12 | 0.6 | |
SBA | 0.072 0 | -0.000 4 | 0.08 | 0.52 | |
10 | N | 0.204 5 | -0.000 1 | 0.12 | 0.57 |
SDBH | 0.169 1 | -0.000 3 | 0.16 | 0.59 | |
SBA | 0.145 0 | -0.000 9 | 0.11 | 0.49 | |
15 | N | 0.328 1 | -0.000 1 | 0.15 | 0.58 |
SDBH | 0.265 7 | -0.000 5 | 0.20 | 0.60 | |
SBA | 0.226 7 | -0.001 4 | 0.14 | 0.49 | |
20 | N | 0.409 0 | -0.000 2 | 0.13 | 0.52 |
SDBH | 0.338 6 | -0.000 6 | 0.18 | 0.55 | |
SBA | 0.290 6 | -0.001 9 | 0.13 | 0.46 | |
25 | N | 0.486 2 | -0.000 2 | 0.13 | 0.51 |
SDBH | 0.404 9 | -0.000 7 | 0.18 | 0.54 | |
SBA | 0.349 4 | -0.002 2 | 0.14 | 0.45 | |
30 | N | 0.578 1 | -0.000 2 | 0.15 | 0.47 |
SDBH | 0.484 7 | -0.000 9 | 0.22 | 0.62 | |
SBA | 0.416 5 | -0.002 8 | 0.17 | 0.41 |
表3 新疆阿尔泰山西伯利亚五针松竞争指数与累积断面积生长量的线性混合效应模型结果
Table 3 Results of the linear mixed-effects models of competitive indices and cumulated basal area increments of Pinus sibirica in Altai Mountains, Xinjiang
时间间隔 Time interval (a) | 竞争指数 Competition indices | a | b | 临界R2 Marginal R2 | 条件R2 Conditional R2 |
---|---|---|---|---|---|
5 | N | 0.098 3 | 0.000 0 | 0.09 | 0.59 |
SDBH | 0.082 9 | -0.000 1 | 0.12 | 0.6 | |
SBA | 0.072 0 | -0.000 4 | 0.08 | 0.52 | |
10 | N | 0.204 5 | -0.000 1 | 0.12 | 0.57 |
SDBH | 0.169 1 | -0.000 3 | 0.16 | 0.59 | |
SBA | 0.145 0 | -0.000 9 | 0.11 | 0.49 | |
15 | N | 0.328 1 | -0.000 1 | 0.15 | 0.58 |
SDBH | 0.265 7 | -0.000 5 | 0.20 | 0.60 | |
SBA | 0.226 7 | -0.001 4 | 0.14 | 0.49 | |
20 | N | 0.409 0 | -0.000 2 | 0.13 | 0.52 |
SDBH | 0.338 6 | -0.000 6 | 0.18 | 0.55 | |
SBA | 0.290 6 | -0.001 9 | 0.13 | 0.46 | |
25 | N | 0.486 2 | -0.000 2 | 0.13 | 0.51 |
SDBH | 0.404 9 | -0.000 7 | 0.18 | 0.54 | |
SBA | 0.349 4 | -0.002 2 | 0.14 | 0.45 | |
30 | N | 0.578 1 | -0.000 2 | 0.15 | 0.47 |
SDBH | 0.484 7 | -0.000 9 | 0.22 | 0.62 | |
SBA | 0.416 5 | -0.002 8 | 0.17 | 0.41 |
图2 西伯利亚五针松树轮宽度年表与月气候因子的相关性。p8-p12表示上一年8-12月份。P, 月降水量; T, 月平均气温; Tmax, 月平均最高气温; Tmin, 月平均最低气温。*, p < 0.05。
Fig. 2 Correlation between ring width chronology of Pinus sibirica and monthly climate factors. p8-p12 represents August to December of the previous year. P, monthly precipitation; T, monthly mean air temperature; Tmax, monthly mean maximum air temperature; Tmin, monthly mean minimum air temperature. * p < 0.05.
图3 新疆阿尔泰山西伯利亚五针松累年生长量与气温、竞争指数的关系。
Fig. 3 Relationship between cumulated basal area increments (BAI) of Pinus sibirica in Altai Mountains, Xinjiang and air temperature (T) and competition index (CI).
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