暖温带地区几种木本植物碳稳定同位素的特点

应用生态学报 ›› 2000, Vol. ›› Issue (4): 497-500.

暖温带地区几种木本植物碳稳定同位素的特点

韩兴国¹, 严昌荣¹, 陈灵芝¹, 梅旭荣²

1. 中国科学院植物研究所, 北京100093;
2. 中国农业科学院农业气象研究所, 北京100081

收稿日期:1998-10-20 修回日期:1999-08-27 出版日期:2000-07-25
通讯作者: 韩兴国,男1959年6月生,博士,研究员,博士导师,主要从事保护生物学、生态系统生态学、生物地球化学和全球变化生物学研究,发表论文30多篇.
基金资助:
国家自然科学基金资助项目(39570126)

Stable carbon isotope characteristics of some woody plants in warm temperate zone

HAN Xingguo¹, YAN Changrong¹, CHEN Lingzhi¹, MEI Xurong²

1. Institute of Botany, Chinese Academy of Sciences, Beijing 100093;
2. Institute of Agrometeorology, Chinese Academy of Agricultural Sciences, Beijing 100081

Received:1998-10-20 Revised:1999-08-27 Online:2000-07-25

摘要/Abstract

摘要： 通过对暖温带落叶阔叶林生态系统主要乔、灌木植物叶片、树干、花、果实碳稳定性同位素比率(δ¹³C值)测定和比较,发现这些植物叶片的δ¹³C值受多种因子的影响,具有较大的种间差异及时空异质性.主要表现在不同植物δ¹³C值不同;种内δ¹³C值变化也很大,以荆条的差异最大,为6.549‰(-22.226‰～-28.775‰);其次是大叶白蜡5.706‰(-23.687‰～-29.393‰);核桃楸5.229‰(-26.146‰～-31.375‰);辽东栎3.333‰(-24.324‰～-27.657‰);北京丁香2.414‰(-25.655‰～-28.070‰),山杏δ¹³C值的种内差异最小,为2.296‰(-23.436‰～-26.432‰).同种植物的不同器官的δ¹³C值也存在差异,皮的δ¹³C值低,木质部的δ¹³C值高.通过对山杏树干木质部δ¹³C值与环境因子的分析发现,年平均温度和山生杏木质部δ¹³C值的大小最为密切,其次分别是年降水量、生长季平均温度和生长季降水量.

Abstract: It was found that the δ¹³C values of the foliar,trunk,flower,and fruit of some woody plants in broad leaved forest in warm temperate zone were affected by many factors,and showed a great interspecific difference and temporal and spatial heterogeneity.The intraspecific variation of δ¹³C values was also great,with the order of Vitex negundo var. heterophylla 6.549‰(-22.226‰～-28.775‰), Fraxinus rhynchophylla 5.706‰(-23.687‰～-29.393‰), Jugans mandshurica 5.229‰(-26.146‰～31.375‰), Quercus liaotungensis 3.333‰(-24.324‰～ -27.657 ‰), Syringa pekinensis 2.414‰(-25.655‰～-28.070‰),and Prunus armeniaca var. ansu 2.296‰(-23.436‰～-26.432‰).Different organs of the same species had different δ¹³C values:trunk and root barks had the low, while xylem had the highest δ¹³C value.According to the relationship analysis between δ¹³C value of Prunus armeniaca var. ansu xylem and environment factors,it was found that δ¹³C value was strongly affected by annual mean temperature and followed by annual precipitation,mean temperature and precipitation in growth season.

韩兴国, 严昌荣, 陈灵芝, 梅旭荣. 暖温带地区几种木本植物碳稳定同位素的特点[J]. 应用生态学报, 2000, (4): 497-500.

HAN Xingguo, YAN Changrong, CHEN Lingzhi, MEI Xurong. Stable carbon isotope characteristics of some woody plants in warm temperate zone[J]. Chinese Journal of Applied Ecology, 2000, (4): 497-500.

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