[Soil catalase activity of main plant communities in Leymus chinensis grassland in northeast China].
The seasonal dynamics of soil catalase activity of three different plants communities in Leymus chinensis grassland in northeast China were in a parabolas shape. The seasonal variation of Chloris virgata community was greater than those of Leymus chinensis community and Puccinellia tenuiflora community, and "seed effect" might be the main reason. The correlation between the activity of soil catalase in different soil layers and environmental factors were analyzed. The results showed that the activity of soil catalase was decreased gradually with depth of soil layer. The activity of soil catalase was closely correlated with rainfall and air temperature, and it was affected by soil temperature, soil moisture, and their interactions. The correlation between the activity and aboveground vegetation was very significant, and the growing condition of plant communities could be reflected by the activity of soil catalase.
Lu
Ping
P
Institute of Grassland Science, Northeast Normal University, Changchun 130024. lping1977@sohu.com
Guo
Jixun
J
Zhu
Li
L
D002374:Catalase / Q000378:metabolism*; D004777:Environment; D063245:Plant Development; D012621:Seasons; D012987:Soil / Q000032:analysis*
D012987:Soil; D002374:Catalase