Biomasses of Eucommia ulmoides plantations with different age structures at small watershed of Wuling Mountain Region
In order to offer a scientific basis for operating and management of Eucommia ulmoides forest, biomasses of the E. ulmoides plantations with different age structures at small watershed of Wuling Mountain Region were studied by using harvest method. The results showed that in the basically same site conditions, biomasses of E. ulmoides plantations were increased with age. Biomass of single 27-year-old plant in E. ulmoides plantations was significantly higher than that of single 5-year-old plant. The order of different organs based on single plant biomass from high to low was stem, root, branch, peel, leaf. In the case of stand biomass composition, tree layer accounted for the largest proportion, and litter layer was the second. Biomass of tree layer in E. ulmoides plantations at 27 years old was 510 741.82 kg/hm2, which was obviously higher than that in E. ulmoides plantations at 5 years old. Annual average net production of E. ulmoides plantations at 27 years old was 26 782.13 kg/(hm2·a), which was higher than the plantations at the other age stages. Net production of stem was the highest, and that of bark was the lowest.
Eucommia ulmoidesbiomassdifferent age structuresWuling Mountain Regionsmall watershed
NETL
NSTL
万方数据
维普
