【摘要】 调查表明 ,南京栖霞山风景区现有色叶树种 2 0余种。分析了色叶树种性状退化的主要原因有水分亏缺、空气污染、病虫危害和旅游干扰等 4个方面 ,并提出了包括采取科学的林分改造技术措施及加强对抗逆性强的色叶树种和非色叶树种选育研究在内的 8项资源合理利用与保护对策更多还原

【Abstract】 The investigation on coloured leaf tree species in Qi Xia Mountain Scenic Spot reveals that more than 20 species of coloured leaf trees are distributed there.The causes leading to the character degradation of coloured leaf tree species include soil moisture shortage,air pollution,insects and diseases,and tourism disturbance.Some measures of utilizion and protection are presented,such as forest stand management and selection and breeding coloured leaf and non coloured leaf tree species of strong resistance.更多还原