Abstract:
In this paper, researches were conducted on the biomass and carbon storage of
Pleioblastus amarus on the defarming-and-reafforestation land in Yuping District of Hongya County by adopting the multiple linear regression and curves models of shape factors, organs' biomass and total biomass. The results showed that (1) The
Pleioblastus amarus' average height was 7.50 m, the average DBH (diameter at breast height) was 3.48 cm, the average biomass of modular unit was 2.09kg and the stand crop was 90.02 t·hm
-2; (2) By the standard of R and adjusted R square, the best model was chosen on the basis of the correlation analysis. The best model of organs' biomass-shape factors was Y=-1.245 + 0.135D + 0.147H + 0.236 d; The best model of total biomass-shape factors was Y=e
(2.200-5.085/D); The best model of total biomass-organs' biomass was Y=0.109 + 1.069x
1 + 2.526x
2 + 1.059x
3; (3) The carbon content of different organs of
Pleioblastus amarus ranged from 0.421 7 g·g
-1 to 0.551 1 g·g
-1, and its order was as follows:rhizome > culm > underground trunk > root > branch > leaf. (4) The carbon stock was 44.55 t·hm
-2 according to the measured value of carbon constant. When 0.45 g·g
-1 or 0.5 g·g
-1, were used for calculation, some error would appear, its maximum error could reach 16.63%.