Study On Carbon Storage Dynamic Characteristics Of The Second Generation Of Chinese Fir Plantation At Different Ages

Based on located observations biomass and carbon content carbon of plants from a national key field scientific experimental station in Huitong, carbon storage, exist in the tree layer, underground layer, falling layer, soil layer and die root layer were researched in a controlled plantation ecosystem at Huitong Ecological Station, and the carbon storage and its spatial distribution in the macrophanerophytes layer, underground layer, nutrient layer, soil layer and die root layer were also researched in different Chinese fir plantation forest ages. The results will provide basic data and scientific basis for plantation ecosystem carbon fixation function and carbon storage function assessment. The results go as follows:1.The carbon content of the Stand components increased with the age, which in the order as follows:needle> bark> root> trunk> twig at the same age. Forest carbon storage of22.93～86.98t.hm-2, the carbon storage is greater in tree layer than the understory vegetation layer, and the understory vegetation layer is greater than the layer of dead matter. Tree layer of carbon on the relative distribution of organs trunk> root> leaf> bark> branch.2.Trunk carbon allocation to increase with age, branches, leaves decrease with age, although the roots and bark fluctuations, but the change is relatively stable.Tree layer fixed carbon capacity-year average curve is an inverted "V" type, trunk, bark, roots carbon accumulation, the average annual change showed a single peak-shaped curve, but the crest of a different time, branches and leaves carbon accumulation of the same trends as the forest age growth rate of carbon accumulation continued to decline when the canopy closure.3.The fixed carbon dynamic characteristics can be divided into five stages of the fir forest, i.e. the establishment of the function of the fixed carbon, carbon fixation ability to rapidly increase, the ability to achieve maximum fixed carbon, the ability of the fixed carbon is relatively stable, decreased ability of the fixed carbon.Fir forest of fixed carbon,not only by the constraints of the biological characteristics of the different growth stages of growth and development rhythm of the fir,but also by the the stand canopy structure and soil fertility conditions it.