【摘要】 对以灌木为主的沙地植物水分生理特征及其研究内容、方法进行了简述。沙地植物耐旱性评价指标由植物形态解剖学特征向生理生化特征发展。研究表明,不论是形态解剖学表现,还是水势、蒸腾等其他水分生理表现,沙地灌木都有着适应干旱条件的特点,并通过多种途径达到避旱的目的。传统理论和方法仍有许多应用。SPAC理论为人们系统地定量研究水分的运输及能量转换奠定了理论基础。根据这一理论提出的各种尺度上的动态研究和模拟方法在干旱区得到了应用。更多还原

【Abstract】 The water physiological characters of shrub grown on sandy land and research on them were reviewed.The research on drought-tolerance evaluation index of psammophytes has developed toward physiological and physiological and biochemica1 character from morphological and anatomical characters. The results of research showed that whatever in the morphology and anatomy or in the water physiology and biochemistry such as water potential and transpiration, the shrubs grown on sandy land possessed the characters adapted to drought areas and could reach the destination of avoiding dry conditions by many approaches. The traditional theories and methodology are still being used widely. SPAC theory was the foundation of quantitative study in water transportation and energy transition. The dynamic study and simulation methods on various scales based on the theory have been applied in arid zone.更多还原