The Structure Factors Research In Carbon Storage Of Yongchun Forest

To explore stand carbon storage structure factors, the forest ecosystem carbon storage and its circulation had great significance. This research used conversion factor continuous function method (biomass expansion factor method), series of2005-2010six years of the forestry statistical data as the foundation, then estimated YongChun forest carbon storage and carbon density changes. The main tree species were respectively from different origins, each age level, different site conditions were analyzed. The results showed that from2005to2010, YongChun forest area was in declining, the forest biomass and carbon storage, carbon density were in improving. Forest carbon reserves were from10.3098×105Mg-C rise to13.358O×105Mg-C, the growth rate was56.77%; Carbon density was from14.8099Mg-C/hm2rose to19.8274Mg-C/hm2, the growth rate was31.84%. Among them, the plantation of natural forest and forest biomass and carbon storage, carbon density had the certain extent. Plantation forest carbon reserves were from4.9229×105Mg·C rise to7.7177×105Mg-C, the growth rate was56.77%; Carbon density was from14.0675Mg·C/hm2rose to18.5467Mg·C/hm2, the growth rate was31.84%. Natural forest forest carbon reserves were from5.3869×105Mg-C rise to5.6403×105Mg·C, the growth rate was4.70%;Carbon density was from15.5603Mg-C/hm2rose to21.8961Mg·C/hm2, the growth rate was40.72%. Each age group carbon storage and not with aged group were increases, but carbon density was increased with the increased age. Each age group carbon storage of the basic conditions was:overmature forest<young growth<nearly mature forest<mature forest<middle-age forest. Each age group of the basic situation of carbon density was:young growth<middle-age forest<nearly mature forest<mature forest<overmature forest.Besides I kind of site quality carbon storage and carbon density were in decline, the rest sites quality of the carbon reserves and carbon density were on the rise. In addition to steep slope carbon storage was in the decline, the rest grades level of carbon reserves were on the rise, All levels of slope of carbon density had a certain degree increase. On this basis, analyzing every structure factors on carbon reserves impact of changes was to supply basises and references for YongChun forest sustainable development in management.