CAJ | 학술논문

采用模拟酸雨喷淋方法,研究了重度酸雨(pH 2.5)、中度酸雨(pH 4.0)和对照(pH 5.6)处理下,不同季节石栎(Lithocarpus glabra Thunb.)植株生长、叶片相对叶绿素含量与叶绿素荧光特性的差异.结果表明,模拟酸雨胁迫下石栎植株的叶绿素含量(SPAD)、PSⅡ最大光化学效率(Fv/Fm)、PSⅡ潜在活性(Fv/Fo)、株高和地径的变化趋势均为:对照(CK)>中度酸雨>重度酸雨,而对石栎植株的光化学淬灭系数(qP)和非光化学淬灭系数(qN)影响差异不显著.说明石栎在无酸或微酸条件下具有良好的适应性,并能促进其生长;而在强酸的条件下石栎植株的适应性较差.
채용모의산우분림방법,연구료중도산우(pH 2.5)、중도산우(pH 4.0)화대조(pH 5.6)처리하,불동계절석력(Lithocarpus glabra Thunb.)식주생장、협편상대협록소함량여협록소형광특성적차이.결과표명,모의산우협박하석력식주적협록소함량(SPAD)、PSⅡ최대광화학효솔(Fv/Fm)、PSⅡ잠재활성(Fv/Fo)、주고화지경적변화추세균위:대조(CK)>중도산우>중도산우,이대석력식주적광화학쉬멸계수(qP)화비광화학쉬멸계수(qN)영향차이불현저.설명석력재무산혹미산조건하구유량호적괄응성,병능촉진기생장;이재강산적조건하석력식주적괄응성교차.
A pot experiment was conducted to study the growth and leaf chlorophyll fluorescence characteristics of Lithocarpus glabra in different seasons under simulated acid rain stress (heavy stress, pH 2.5;moderate stress, pH 4.0;and control pH 5.6). The results showed that trends of the leaf relative chlorophyll content (SPAD), maximum PSⅡphotochemical efficiency (Fv/Fm), PSⅡpotential activity (Fv/Fo), plant height and stem diameter in different acid rain stress were pH 5.6(CK)>pH4.0>pH 2.5, but lesser effects on qP and qN. The results indicated that Lithocarpus glabra had better adaptability under the lower acidic forcing which promoted its growth and had poor adaptability under higher acidic forcing conditions.