Biomass and carbon storage of Haloxylon ammodendron community in Junggar Basin

Haloxylon ammodendron was the edificators and dominant species in Junggar Basin, it is important to research biomass and carbon pool of Haloxylon ammodendron community. The study was conducted on the basis of 10 permanent plots in study area, and each tree in the plots was measured. We estmiate biomass and carbon storage of Haloxylon ammodendron community with the measured value of carbon content. Through measurement data and model analysis, basic conclusions are as follows: (1)The biomass which increases with the increasing of tree-age grew from 1.9948 kg in tree-age 0-5 to 61.6480 kg in 21-25, and branches started partly dead after 26. and the partition ratio of thick branch biomass was main (mean 63.53); (2) Carbon content moves between 49.08 and 53.57, the weighted average is 51.60. Between the various components of the same age class was different, least in 0-5 (coefficient of variation 1.72%) and largest in 21-25 (coefficient of variation 6.78%); (3) The carbon content of shrub, herb and litter is 43. 84%, 39.13%, 31.47%, respectively. The mean carbon content of soil which reduces gradually with the depth is 0.0310% sub(o) (4) The carbon storage of Haloxylon ammodendron community in the Junggar Basin was revealed, which was 1919x10 super(4)t in total, with a density of 5815.7183kg/hm super(2), and 1.53% higher using actual carbon content than the default value(0.5). Owing to the fact, Haloxylon ammodendron community has showed obvious carbon pool functions, by emphasising quality of intensive management, forest ecosystem of Junggar Basin will have greater influences on carbon sequestration of the Northern Xinjiang area.