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介绍了植物水分利用效率与稳定碳同位素的相关性,以及影响植物碳同位素丰度值δ13C的主要因子,重点分析几种重要环境因子对林木δ13C的影响,表明降雨量、土壤水分状况、温度、光照和CO2浓度等因素都会在不同程度上影响植物叶片气孔导度和CO2的固定,导致植物δ13C发生变化;并从森林抚育间伐措施对δ13C的影响,水分胁迫条件下δ13C的变化,以及δ13C的替代测定方法等方面提出了研究展望。
The relationship between plant WUE and stable carbon isotope and the main factors influencing plant δ13C abundance were introduced. The effects of several important environmental factors on forest δ13C were analyzed emphatically. The results showed that rainfall, soil moisture, temperature, Light and CO2 concentrations and other factors will affect plant leaf stomatal conductance and CO2 fixation to varying degrees, leading to plant δ13C change; and from the impact of tending on thinning on δ13C, δ13C under water stress, and δ13C Alternative measurement methods and other aspects of the research prospects.