The Variation of Biomass of Eucalyptus urophylla ×E. grandis Plantations on the Leizhou Peninsula under Three Land Preparation Methods and Relationships with Soil Moisture
Growth and soil moisture were examined for Eucalyptus urophylla × E. grandis plantations established using three land preparation methods. Traits evaluated included average biomass per tree, soil moisture content, and then the relationship between these two traits in order to evaluate effect of site preparation method on stand growth and water use efficiency. Research results showed: although eucalypt forest plant total biomass of three species of soil preparation and biomass of different organs increased as age increased, the proportion of total biomass accounted for by branches and leaves gradually decreased whilst that accounted for by stems and roots increased. The growth amount of full cultivation was the largest in the young (to age 16 months) eucalypt plantation, and furrowing was the largest 18 months later. Seasonal variation in of soil moisture under the Eucalyptus urophylla × E. grandis plantations established under the three land preparation methods proved similar. To three land preparation methods, digging hole generally had the highest soil water content and was significantly higher than full cultivation (P<0.05) but not significantly higher than furrowing. There was a positive correlation among the three land preparation methods in average biomass per plant and water consumption, and the fitted equation between individual tree growth and water consumption of stand was built.
NETL
NSTL
万方数据
维普
