Seasonal dynamics characteristics of soil enzyme activities of poplar plantation with different stand ages and rotations
Seasonal dynamics characteristics of soil enzyme activities of poplar plantation with different stand ages and rotations were investigated.The results showed that there exited the differences of enzyme activities of different experiment plots among spring,summer,autumn and winter.Seasonal dynamics of sucrase,urease,phosphatase and catalase were as follows:Sucrase activities of soil was higher in spring,summer and autumn than that in winter.While,urease activity of soil was higher in spring than that in summer,autumn and winter.Phosphatase activity of soil change was as autumn＞summer＞spring＞winter.However,catalase activity of soil was no obvious difference in the four seasons.The results also showed that,in exception of catalase,the activities of sucrase,urease,phosphatase of all soil investigated at 0 -15 cm were higher than those at 15-30 cm.There also exited difference of enzyme activities of soil in poplar plantation with different stand ages and rotations.The activities of soil phosphatase,urease andsucrase in the 10-year-old stands of the first-rotation poplar plantation were higher than those in the 10-year-old stands of thesecond-rotation poplar plantation in correspond with season.The activities of soil phosphatase,urease,sucrase and catalase in the 10-year-old stands of the first-rotation poplar plantation were all higher those in the 15-year-old stands of the first-rotation poplar plantation.
poplar plantationstand ages and rotationssoil enzyme seasonal dynamics
国家科技期刊平台
NSTL
万方数据
维普
