Study on Biomass and Its Allocation of Different Density Loblolly Pine
Fang Hua · Fujian linxueyuan xuebao · 2003
By using allometric method,the biomass and its allocation of 9 years old different density loblolly pine plantations are studied in hilly region of southern JiangsuIt shows that a rational density is necessary to promote loblolly pine biomass,but too high density can lead to low biomass;the experiment telled us that the planted loblolly pine existing biomass at Xiashu biological positioning station is in the arrange of 4928～7879 ton per hm2,and hold a net yearly productivity of 1557～2558 ton per hm2;the distribution of biomass in trunk and branch and leaf and root is respectively 42%,21%,12% and 24%.The yearly growing and average growing quantity are both increasing with tree ages increase,and the latter is bigger;so the forest unit is still in rapid growth period.