By measurement of underground biomass and observation and rating of turf density and disease resistance of cool season turf mixture (tall fescue+Kentucky bluegrass), the distribution and seasonal change of turfgrass underground biomass was studied.

Succession of shrubby grassland of rocky mountain and its improvement and utilization in Karst areas;

To understand the growth strategies of clonal ramets from Rhus typhina,an exotic tree species,in the shrub-grassland of the hilly area of the Taihang Mountains in north China,a relevant analysis was conducted on the heterogeneous growth characteristics of R.