| Based on the investigation of oak vegetation in Henan Province in 2011 and in the year of 2015,this study estimated the biomass and carbon storage of individual tree,tree layer,shrub layer,herb layer and litter layer in different age groups in the year of 2015;The carbon sequestration rate of different vegetation types and stand density in 2011~2015 was calculated,and the change law was discussed;The method of estimating carbon sequestration potential of vegetation was evaluated by maximum value method and productivity regression model.The main results are as follows:1.The biomass per plant increased with the increase of forest age,and the young forest was 38.683 kg per strain,mature forest was 218.122 kg per strain,the average value was 136.547 kg per strain;In terms of biomass allocation of individual trees,Trunk>Root>Branch>Bark>Leaf;The biomass of trunk is the absolute advantage,the average value was 53.742%;The biomass of tree layer increased with the increase of age,the biomass of young forest,immature timber,near mature forest and mature forest was 47.06 t.hm-2,105.25 t.hm-2,149.07 t.hm-2,202.26 t.hm-2;The biomass of shrub layer four age group was 6.517 t?hm-2,12.910 t?hm-2,21.544 t?hm-2,14.640t?hm-2,near mature forest > mature forest > immature timber > young forest;The biomass of each age group of herb layer was3.778 t?hm-2,3.523 t?hm-2,3.476 t?hm-2 and 3.392 t?hm-2;The biomass of each layer in different age groups showed: aboveground biomass >underground biomass;The biomass of litter layer in each age group was 2.458 t?hm-2,6.203t?hm-2,6.476 t?hm-2,4.072 t?hm-2.2.The carbon storage of tree layer increased with the increase of age,the carbon storage of young forest,immature timber,near mature forest and mature forest were 21.025 t?hm-2,47.651 t?hm-2,66.594 t?hm-2 and 91.401t?hm-2;The proportion of carbon storage in tree trunks was between 49.087-61.575%,the shrub layer four age groups of carbon reserves were 6.517 t?hm-2,12.910 t?hm-2,21.544 t?hm-2 and 14.640 t?hm-2,near mature forest > mature forest > immature timber > young forest;The carbon storage in the upper part of the grass was greater than that of the herb;The carbon storage of litter increased with the increase of forest age,the carbon storage of the four age groups were 1.081t?hm-2,2.527 t?hm-2,2.860 t?hm-2,4.258 t?hm-2;In terms of total carbon storage,the carbon storage in each age group was 26.443 t·hm-2,57.495t·hm-2,80.388t·hm-2,103.499t·hm-2,the average carbon storage was 66.956 t·hm-2,the proportion of carbon storage in tree layer was 79.513%-90.468%.3.The carbon sequestration rate of each age group was 2.52 t.hm-2.a-1,4.71 t.hm-2.a-1,2.26 t.hm-2.a-1,1.73 t.hm-2.a-1,immature timber > young forest > near mature forest > mature forest;The rate of carbon sequestration of Quercus pure forest was less than that of natural secondary oak dominated,the carbon sequestration rate of different stand density showed that the carbon fixation rate increased with the increase of stand density.4.In this study,the carbon sequestration potential of Quercus vegetation in the Funiu Mountain area was estimated by using the maximum method,the carbon sequestration potential of each age group was1.09 t.hm-2.a-1,1.03 t.hm-2.a-1,1.78 t.hm-2.a-1,1.77 t.hm-2.a-1.5.Carbon sequestration value of Quercus vegetation using carbon unit price of 1200 yuan /t(C),the carbon sequestration value of each age group was 31 thousand and 730 yuan,68 thousand and 990 yuan,$96 thousand and 470,$124 thousand and 200;Among them,the tree layer carbon sink was the largest,with an average value of 68 thousand yuan per hectare,and the lowest value of carbon sequestration in herb layer,with an average of $1 thousand and 600 per hectare. |
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