摘要
为了解杉木林地和根际土壤酚类物质的含量与动态变化，同时也为了和阔叶林地及连栽林地进行比较，作者采样分析了杉木１代、２代以及檫树林地林间和根际土壤的酚类物质。结果显示：①杉木檫树两林木根际土壤总酚含量均显著高于其林间土壤，Ｒ／Ｓ值平均是１．６１和１．６７，但两种林木之间无论是根际土壤还是林间土壤总酚含量无明显不同；②杉木根际土壤游离酚含量显著高于檫树根际土，平均是檫树根际土的１１．９倍；③从１年的动态变化来看，两种林木的根际和林间土壤总酚，游离酚含量均从１月到７月呈上升趋势，７月以后又重新回落；④杉木连栽造成了林间土壤游离酚含量明显增加，２代杉木林地土壤游离酚含量是１代林地的１．３７倍，但连栽并未改变杉木林间和根际土壤总酚含量，根际土壤游离酚含量也没有发生明显的变化。
To understand the differences in content and dynamic changes of soil phenol between Chinese fir and Chinese sassafras and between first-planting and second-planting Chinese fir forest, rhizosphere and nonrhizosphere soil under two forests was collected and analyzed. The results were as follows:①Total phenol in rhizosphere soil was higher than that in non-rhizosphere soil under two forests (average R/S, Chinese fir l.61, Chinese sassafras 1.67),but there was insignificant difference in total phenol between two forests. ② Average free phenol content in rhizosphere soil under Chinese fir is 1. 19 times as much as that under Chinese sassafras. ③Total phenol and free phenol of soil increased from January to July,then decreased from July to January. ④ Chinese fir succession result in accumulation of free phenol in non-rhizosphere soil. Free phenol content in soil under secondplanting Chinese fir forest was 1.37 times as much as that in soil under first-planting forest, however,the total phenol in both rhizosphere and non-rhizosphere soil appeared no accumulation,neither does free phenol in rhizosphere soil.
出处
《浙江林业科技》
北大核心
2000年第5期1-4,共4页
Journal of Zhejiang Forestry Science and Technology
基金
国家自然科学基金
关键词
杉木
檫树
连栽
酚类物质
Chinese fir
Chinese sassafras,successive plantation
phenol
