土壤酸化对油松生长的影响  

EFFECT OF SOIL ACIDIFICATION ON CHINESE PINE GROWTH

作　　者：唐鸿寿[1] 

机构地区：[1]中国科学院生态环境研究中心系统生态开放研究室,北京100085

出　　处：《应用与环境生物学报》2001年第1期20-23,共4页Chinese Journal of Applied and Environmental Biology

基　　金：日本东京农工大学大气环境学研究室Tsumugu Totsuka教授提供资助

摘　　要：褐色森林土酸化后 ,pH值下降 ,同时淋溶出大量Al离子和Mn离子 .播种在酸化土壤中的油松种子萌发率稍有提高 .生长在酸化土壤的油松苗的叶绿素含量 ,蒸腾强度 ,光合速率 ,相对生长率和干重均下降 ,原因是Al离子和Mn离子对油松有毒害作用 ,并且阻止油松对钙离子和镁离子的吸收 .表 3参After soil acidification, the pH of brown forest soil decreased, numerous Al and Mn ions were leached. The germination rate of Chinese pine (Pinus tabulaeformis Carr.) seeds increased a little sowed in brown forest soil, which was treated with H 2SO 4. The chlorophyll content, water transpiration, photosynthetic rate, dry weight and relative growth rate of Chinese pine seedlings all decreased growing in such soil. The reason is that Al and Mn ions are poisonous to Chinese pine, and prevent Chinese pine from absorbing Ca and Mg in soil. Tab 3, Ref 12

关 键 词：油松 土壤酸化 酸沉降污染 铝 锰 

分 类 号：S714[农业科学—林学]