羊草生态化学计量特征研究进展

Advances in Ecological Stoichiometry of Leymus Chinensis

羊草不仅是中国北方草原地区重要的牧草之一,同时也是重要的水土保持植物。生态化学计量学以生态学和化学计量学为基础,研究生态系统能量和多种元素的平衡,主要研究生态过程中C、N、P的平衡。近年来,由于各种因素的干扰,特别是刈割、放牧等因素影响,羊草草原退化达到前所未有的严重程度。通过对羊草生态化学计量特征的研究可以反映草原优势种对养分的吸收和利用能力,进而反映人为干扰和自然环境变化大环境下草原生态的变化。该文综述近年来羊草生态化学计量特征的研究进展,旨在为羊草草原的合理利用和草原生态的保护提供理论基础和科学依据。

Leymus chinensis is not only one of the important forage grasses in the grasslands of northern China,but also an important soil and water conservation plant.Based on ecology and chemometrics,ecological chemometrics studies the balance of ecosystem energy and many elements,and mainly studies the balance of C,N and P in the ecological process.In recent years,due to the interference of various factors,especially cutting,grazing and other factors,the degradation of Leymus chinensis grassland has reached an unprecedented degree.The study on the ecological stoichiometric characteristics of Leymus chinensis can reflect the ability of nutrient absorption and utilization of dominant species in grassland,and then reflect the changes of grassland ecology under man-made disturbance and natural environment changes.This paper summarizes the research progress on the ecological stoichiometric characteristics of Leymus chinensis in recent years,in order to provide theoretical and scientific basis for the rational utilization of Leymus chinensis grassland and the protection of grassland ecology.