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作 者 ：王连峰1;潘根兴1;石盛莉1;黄明星2;张乐华2

期 刊 ：植物营养与肥料学报 2002年 8卷 1期 页码：29-34

关键词：土壤溶液；溶解有机碳；森林生态系统；庐山；酸沉降；

Keywords:soil solution, DOC, forest ecosystem, Mt. Lushan, acid deposition,

摘 要 ：采用土壤溶液提取法及TOC仪测定法分析了庐山森林生态系统土壤中溶解有机碳 (DOC)的含量及其与植被因素和季节动态的关系。结果表明 ,供试土壤中DOC的含量为 289.85± 111.0 4mg·kg^-1,其剖面分布相对平缓 ,除表层外 ,底部土壤含量也较高 ;针叶林和根圈土中表层土壤DOC含量分别高于阔叶林和非根圈土 ;土壤溶液DOC浓度的季节分异明显 ,冬、秋季偏高 ,夏、春季偏低 ;土壤溶液DOC与溶解铝间呈极显著正相关关系

Abstract:Soil samples were collected in forest ecosystem of Mt. Lushan, China. Soil solutions were obtained by extraction method and dissolved organic carbon was determined by Total Organic Carbon Aanalizer-5000 (Shimadzu). DOC contents and the relation to the vegetation activity and to seasonal dynamics were studied. The data of DOC lay in range of 289.85±111.04 mg·kg^-1. High concentrations could be found in bottom soil besides the peak concentration in surface soil. Surface soil DOC concentration is higher under needle-leaf forest than under broad-leaf one, and higher in rooted zone soil than in un-rooted zone soil. Seasonal change of DOC concentration occurred with bigger contents in winter and spring. There was very significant positive correlation between the concentrations of DOC and of dissolved aluminum or of the ratio of monometric aluminum to polymetric aluminum.

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