摘要
用成对样本T检验法对相邻生长的杉木林和阔叶林以及若干不同世代的杉木林土壤酚含量进行了比较研究。结果表明 :1 杉木林和阔叶林土壤挥发性酚含量都很低 ,远低于可使植物产生中毒的浓度 ;2 挥发性酚含量随季节的变化而变化且会自行消解 ,在常温下经过一个月后 ,其平均含量下降了 6 2 10 % ,含酚量越高的土壤降低的程度越大 ;3 阔叶林土壤水溶性酚和复合态酚的平均含量高于杉木林土壤 ,但未达显著水平 ,而两种林分的挥发性酚含量近乎相等 ;4 没有发现不同世代杉木林土壤水溶性酚和复合态酚含量有显著差异。上述结果表明 。
Phenolic contents in soils of Chinese fir and its adjacent broad leaved stands and in different rotation generations of Chinese fir were compared by paired sample T test method. The results indicated that: 1 The concentration of volatile phenol in soils of both Chinese fir and broad leaved stands were much lower than concentrations that cause damage to plants. 2. The content of volatile phenols varied with seasons and automatically reduced so quickly that one month later the average content of the phenols reduced up to 62.1%。The higher of the content of the soil was, the more it reduced. 3. The average content of water soluble and complex phenols in the soil of the broad leaved stand was higher than that of the Chinese fir, however, no significant differences between them were found. The amount of volatile phenol in soils of Chinese fir and broad leaved stands were about the same. 4. No significant differences of water and complex phenols in soils between different rotation generations of Chinese fir were observed. The results indicated that the possibility which the phenols accumulate in soil then become a toxic factor was low.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2002年第2期9-14,共6页
Scientia Silvae Sinicae
基金
国家自然科学基金资助项目批准号 :3 95 70 5 84
关键词
杉木林
阔叶林
土壤酚含量
连栽
Cunninghamia lanceolata , Soil phenol, Successive planting
