摘要
对秦岭林区几种主要林型根际土壤微生物的测定分析表明：根际微生物数量表现为油松—华山松混交林＞落叶松林＞锐齿栎—油松混交林，且以细菌数量为主。同一林型微生物状况为根际＞非根际，干基根区＞干基非根区，且不同林分差异显著。微生物的数量分布与土壤酶活性、有机质含量、土壤养分状况等强弱呈正相关关系。
The microbial quantities of rhizosphere at Huoditang forest region of the Qinling mountains are analysied. The result showed that the rhizosphere quantities of Chinese pine-Armand pine mixed forest>larch forest>Pine-oak mixed forest, and the quantities of bacterium were dominant. The microbial quantities order of soil under alike forest types was rhizosphere>non rhizosphere; soil on the bottom of tree stem (within a range of 0～5 cm)>the soil body beyond 30 cm of tree stems and used as control, and there had significant differences in the different forest types. The quantities distribution of rhizosphere microorganisms were positively correlated with the soil enzymic activities, contents of organic matter and soil nutrients.
出处
《水土保持通报》
CSCD
北大核心
1999年第2期19-22,共4页
Bulletin of Soil and Water Conservation
关键词
森林土壤
根际微生物
生化特性
秦岭
forest soil
rhizosphere microoganisms
bio chemical properties
the Qinling mountains
