东北红豆杉雌雄植株径向生长对邻体竞争和气候因子的响应

doi:10.3773/j.issn.1005-264x.2009.06.018

摘要/Abstract

摘要：

通过树木年轮学方法, 研究了树木性别、大小、邻体竞争和气候因子(温度和降水)对东北红豆杉(Taxus cuspidata)径向生长的影响。研究表明, 性别和树木大小对东北红豆杉径向生长影响显著, 雄株的径向生长速率显著大于雌株(p=0.023)。东北红豆杉雌、雄植株径向生长速率均与邻体竞争强度显著负相关(p<0.05), 并且邻体竞争对雌株径向生长的负效应更大。树木气候学分析表明, 东北红豆杉雌、雄植株径向生长对气候因子的响应不同。雌株径向生长量与前一年8月、前一年10月平均温度显著负相关, 雄株径向生长量与月平均温度不显著相关。雌株径向生长量与当年1月的降水量显著负相关, 而雄株径向生长量与当年8月的降水显著负相关。

关键词: 径向生长, 雌雄异株, 邻体竞争, 树木气候学

Abstract:

Aims Our objective was to address the impacts of sex, tree size, neighboring competition and climate factors on radial growth in Taxus cuspidata.

Methods An integrative dendroclimatic approach was used to quantify radial growth and relate its response to climate factors.

Important findings Sex and tree size exhibited significant effects on radial growth in Taxus cuspidata. Radial growth rate was significantly larger in males than in females (p=0.023) and was negatively related to neighboring competition in both sexes. Female trees were affected more negatively by neighboring competition than males (p<0.05). Dendroclimatic analysis indicated different responses to climate factors for males and females. Radial growth in females was negatively related to mean temperature in August and October of the previous year, but no significant associations to mean temperature were found in males. Radial growth in females was associated negatively with precipitation in the current January, and that of males was associated negatively with precipitation in the current August.

Key words: radial growth, dioecy, neighboring competition, dendroclimatology

张春雨, 高露双, 赵亚洲, 贾玉珍, 李金鑫, 赵秀海. 东北红豆杉雌雄植株径向生长对邻体竞争和气候因子的响应. 植物生态学报, 2009, 33(6): 1177-1183. DOI: 10.3773/j.issn.1005-264x.2009.06.018

ZHANG Chun-Yu, GAO Lu-Shuang, ZHAO Ya-Zhou, JIA Yu-Zhen, LI Jin-Xin, ZHAO Xiu-Hai. RESPONSE OF RADIAL GROWTH TO NEIGHBORING COMPETITION AND CLIMATE FACTORS IN TAXUS CUSPIDATA. Chinese Journal of Plant Ecology, 2009, 33(6): 1177-1183. DOI: 10.3773/j.issn.1005-264x.2009.06.018

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链接本文: https://www.plant-ecology.com/CN/10.3773/j.issn.1005-264x.2009.06.018

https://www.plant-ecology.com/CN/Y2009/V33/I6/1177

图/表 8

图1 长白山森林生态系统定位研究站气象站1982~2007年平均月温度和月降水量柱状图表示降水量 Bars indicate precipitation 点线图表示温度 Lines with dots indicate temperature 误差棒表示标准偏差 Error bars indicate SD

Fig. 1 Average monthly temperature and monthly precipitation for 1982-2007 at Meteorological Station in Research Station of Changbaishan Forest Ecosystems

表1 性别和个体大小对径向生长速率影响的双因素方差分析

Table 1 Effects of sex and individual size on the radial growth rates evaluated by two-way ANOVA

变差来源 Variance source	自由度 df	平方和 Sum Sq	均方 Mean Sq	F	p
个体大小 Individual size	1	0.306	0.306	11.233	0.001
性别 Sex	1	0.147	0.147	5.371	0.023
交互作用 Interactions	1	0.002	0.002	0.065	0.799
残差 Residuals	94	2.564	0.027

图2 不同径级东北红豆杉雌雄植株径向生长速率对比 F: 雌株 Female trees M: 雄株 Male trees

Fig. 2 Comparisons of growth rate of diameter at breast height (DBH) between sexes among individual sizes in Taxus cuspidata

图3 东北红豆杉径向生长速率与邻体竞争强度的关系

Fig. 3 Relationships between absolute growth rate of diameter at breast height (DBH) and neighboring competition intensity in Taxus cuspidata

表2 树轮年表描述统计特征

Table 2 Descriptive statistics for tree-ring chronologies

年表统计量 Chronology statistics	雄性 Male		雌性 Female
年表统计量 Chronology statistics	标准年表 Standardized	差值年表 Residual	标准年表 Standardized	差值年表 Residual
样芯数 No. of cores	31	31	30	30
平均敏感度 Mean sensitivity	0.156 5	0.138 8	0.144 0	0.136 6
标准差 Standard deviation	0.146 1	0.108 9	0.147 4	0.108 9
斜度 Skewness	-1.159 5	-0.220 6	1.281 5	-0.063 5
峰度 Kurtosis	5.866 8	0.371 8	9.553 9	0.203 8
一阶自相关系数 First order autocorrelation	0.400 2	0.029 9	0.263 5	0.059 5

表3 树轮年表公共区间分析

Table 3 Common interval analysis of tree-ring chronologies

公共区间统计量 Common interval statistics	雄性 Male (1865~2007)	雌性 Female (1859~2007)
样芯间平均相关性 Mean correlations among all cores	0.158	0.203
信噪比 Signal-to-noise ratio (SNR)	5.500	5.103
样本总体代表性 Expected population signal (EPS)	0.858	0.876
第一主成分解释方差量 Variance in first eigenvector (%)	20.24	27.64
年表公共区间均值 Chronology common interval mean	0.989	0.986
年表公共区间标准差值 Chronology common interval SD	0.093	0.117

图4 东北红豆杉雌、雄植株年表比较

Fig. 4 Comparisons of residual chronologies between male and female trees in Taxus cuspidata

图5 东北红豆杉标准年表年轮序列与月平均温度及降水量相关性分析

Fig. 5 Correlation analysis between annual tree-ring standard chronology and monthly mean temperature and precipitation in Taxus cuspidata * p<0.05

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