Biomass Characteristics in the Arbor Layer of Aleurites Montana Plantation
The biomass characteristics and distribution in the arbor layer were focused on in the study of Aleurites Montana as a bio-energy species. The arbor layer biomass of Aleurites Montana plantations of 2a, 3a, 5a, 7a and 9 a were determined by the method of field study and standard tree yield. Meanwhile, in the regression equation of arbor layer biomass as W = a(D2H)b, the correlative coefficient of total stem was 0. 980 1 and those of other organs were above 0. 909 3, showing positive correlation. The results showed that the arbor layer biomass of 2 a, 3 a, 5 a, 7 a and 9 a Aleurites Montana were determined respectively as 41. 162 t/hm , 51. 15 t/hm , 58. 656 t/ hm2, 114.005 t/hm2 and 134.894 t/hm2. The arbor layer biomass of 9 a Aleurites Montana was respectively 1. J83, 2. 300, 2. 637 and 3. 277 times more than that of 7 a, 5 a, 3 a and 2 a. In arbar layer biomass distribution, the stems of 9 a occupied the highest proportion as 41.09% while those of 2 a occupied the lowest as 38. 54% ; the branches of 7a occupied the highest as 26. 1% while those of 5 a occupied the lowest as 22. 8% ; the leaves of 5 a occupied the highest as 13. 72% while those of 7 a occupied the lowest as 10. 38% ; the roots of 7 a occupied the highest as 23. 68% while those of 9 a occupied the lowest as 21. 52%. Stem biomass contributed the most in arbor layer biomass and the biomass of stems, branches, leaves and roots obviously presented the increasing tendency with the aging of the stand.
NETL
NSTL
万方数据
维普
