沙棘属植物叶片碳稳定同位素含量与气候的关系

doi:10.13287/j.1001-9332.202103.007

应用生态学报 ›› 2021, Vol. 32 ›› Issue (3): 819-824.doi: 10.13287/j.1001-9332.202103.007

沙棘属植物叶片碳稳定同位素含量与气候的关系

贺玲威, 杨君珑, 李小伟^*

宁夏大学农学院, 银川 750021

收稿日期:2020-09-21 接受日期:2020-12-31 出版日期:2021-03-15 发布日期:2021-09-15
通讯作者: * E-mail: lxwbq@126.com
作者简介:贺玲威, 女, 1996年生, 硕士研究生。主要从事林业、森林生态研究。E-mail: helwnxu@163.com
基金资助:
国家自然科学基金项目(31860122,31560154)、宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01)和宁夏技术创新引导专项资助

Relationship between climate and leaf carbon stable isotope of Hippophae

HE Ling-wei, YANG Jun-long, LI Xiao-wei^*

School of Agriculture, Ningxia University, Yinchuan 750021, China

Received:2020-09-21 Accepted:2020-12-31 Online:2021-03-15 Published:2021-09-15
Contact: * E-mail: lxwbq@126.com
Supported by:
National Natural Science Foundation of China (31860122, 31560154), the Ningxia Higher Education Institutions First-class Discipline Construction Project (NXYLXK2017A01) and Ningxia Special Project of Technical Innovation Gui-dance

摘要/Abstract

摘要： 本试验以131个沙棘属植物种群为研究对象,通过测定其叶片碳稳定同位素(δ¹³C)值,分析了碳稳定同位素特征与环境因子之间的关系。结果表明: 沙棘属植物叶片的δ¹³C值介于-24.65‰～-29.11‰,平均值为-26.97‰,属于C3植物,叶片δ¹³C值变异系数为种内大于种间,表明环境因子是影响沙棘属植物叶片δ¹³C含量变化的主导因素。沙棘属植物叶片的δ¹³C值与经纬度的变化无显著相关,与海拔呈显著负相关。通过建立回归方程: δ¹³C(‰)=0.118VAP-0.007GST-0.000028RDA-20.721(R²=0.212,P<0.0001),说明影响沙棘属叶片δ¹³C值最主要的因素是水蒸气压(VAP)、生长季温度(GST)和太阳辐射(RDA)。研究结果可为沙棘属植物对全球气候变化的响应提供理论依据。

关键词: 沙棘属植物, δ¹³C值, 碳稳定同位素, 环境因子

Abstract: We analyzed the relationship between carbon stable isotope characteristics of 131 Hippophae populations and environmental factors by measuring the foliar δ¹³C value in Hippophae. The results showed that the foliar δ¹³C values of Hippophae ranged from -24.65‰ to -29.11‰, with an average of -26.97‰. Hippophae species were C3 plants. For the foliar δ¹³C values, the coefficient variation at intraspecific level was higher than that at interspecific level, indicating that environmental factors should be main factors driving the variations of leaf δ¹³C. The δ¹³C values had no significant correlation with latitude and longitude, but were negatively correlated with altitude. The regression equation was δ¹³C(‰)=0.118VAP-0.007GST-0.000028RDA-20.721 (R²=0.212,P<0.0001). Water vapor pressure (VAP), growing season temperature (GST), and radiation (RDA) were the major factors affecting foliar δ¹³C values. Our results could provide a theoretical basis to understand the responses of Hippophae species to global climate change.

Key words: Hippophae, δ¹³C value, carbon stable isotope, environmental factor

贺玲威, 杨君珑, 李小伟. 沙棘属植物叶片碳稳定同位素含量与气候的关系[J]. 应用生态学报, 2021, 32(3): 819-824.

HE Ling-wei, YANG Jun-long, LI Xiao-wei. Relationship between climate and leaf carbon stable isotope of Hippophae[J]. Chinese Journal of Applied Ecology, 2021, 32(3): 819-824.

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沙棘属植物叶片碳稳定同位素含量与气候的关系

Relationship between climate and leaf carbon stable isotope of Hippophae

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