School of Agriculture, Ningxia University, Yinchuan 750021, China.
Ying Yong Sheng Tai Xue Bao. 2021 Mar;32(3):819-824. doi: 10.13287/j.1001-9332.202103.007.
We analyzed the relationship between carbon stable isotope characteristics of 131 populations and environmental factors by measuring the foliar δC value in . The results showed that the foliar δC values of ranged from -24.65‰ to -29.11‰, with an average of -26.97‰. species were C3 plants. For the foliar δC 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 δC. The δC values had no significant correlation with latitude and longitude, but were negatively correlated with altitude. The regression equation was δC(‰)=0.118-0.007-0.000028-20.721 (=0.212,<0.0001). Water vapor pressure (VAP), growing season temperature (GST), and radiation (RDA) were the major factors affecting foliar δC values. Our results could provide a theoretical basis to understand the responses of species to global climate change.
我们通过测量叶片 δC 值分析了 131 个种群的碳稳定同位素特征与环境因素之间的关系。结果表明， 的叶片 δC 值范围为-24.65‰至-29.11‰，平均值为-26.97‰。 物种为 C3 植物。对于叶片 δC 值，种内变异系数高于种间变异系数，表明环境因素可能是驱动叶片 δC 变化的主要因素。 δC 值与纬度和经度无显著相关性，但与海拔呈负相关。回归方程为 δC(‰)=0.118-0.007-0.000028-20.721(=0.212，<0.0001)。水汽压（VAP）、生长季温度（GST）和辐射（RDA）是影响叶片 δC 值的主要因素。我们的研究结果可为了解 物种对全球气候变化的响应提供理论依据。
