Carbon Sequestration Characteristics And Potential Of Robinia Pseudoacacia Platation In Central South Plain Region Of Henan Province

In this paper,based on the Robinia pseudoacacia artificial forest in central south Henan province as the research object,through field investigations,sampling and analysis method combining the indoor experiment,the carbon storage and distribution pattern of Robinia pseudoacacia artificial forest ecosystem were researched,"he carbon sequestration rate,carbon sequestration potential and main influencing factors were discussed.The study results show that:(1)The carbon storage of the Robinia pseudoacacia tree layer is about 320.1?452.7 g·kg-1.The carbon storage of its herb layer and litter layer are 109.6?410.3 g·kg-1.122.3?340.9 g·kg-1.The carbon storage of its soil horizon is 4.0?28.0 g·kg-1.The carbon storage of the 6 years Robinia pseudoacacia tree layer in Zhumadian is the largest,which is 39.1Mg·hm-2.Between the Robinia pseudoacacia tree layers,tree trunk is the main body of carbon storage,which accounts for 45.1%?63.0%of the carbon reserves in the trees.The carbon storage of the 6 years Robinia pseudoacacia soil horizon in Zhumadian is the largest,which is 110.9 Mg·hm-2.Between the Robinia pseudoacacia soil horizons,0-50 cm soil layers contribute significantly to the increase of soil carbon reserves in 0?100 cm soil layers,accounted for 54.6%?69.0%of the 0?100 cm soil layer total carbon storage.The total carbon storage of the 6 years Robinia pseudoacacia ecosystem in Zhumadian is the largest,which is 167.5 Mg·hm-2.For the ecosystems of the Robinia pseudoacacia artificial forest ecosystem in each region,the soil horizon is the main carbon bank of artificial forest ecosystem,accounted for 66.2%?89.6%the artificial forest ecosystem total carbon storage.(2)Both the carbon sequestration rate and potential of the Robinia pseudoacacia artificial forest vegetation layer in Zhumadian are the largest,which are 1.58 Mg·hm-2·a-1 and 20.12 Mg·hm-2;The second is in Luohe,which are1.43 Mg·hm-2· a-1 and 16.92 Mg·hm-.Both the carbon sequestration rate and potential of the Robinia pseudoacacia artificial forest ecosystem in Zhumadian are still the largest,which are 2.51 Mg·hm-2·a-1 and 39.22 Mg·hm-2.It can be seen that the Robinia pseudoacacia artificial forest in Zhumadian has better carbon sequestration ability.(3)The main influencing factors of Robinia pseudoacacia artificial forest ecosystem carbon reserves in different regions are different.Among which,the main influencing factors of Robinia pseudoacacia artificial forest ecosystem carbon reserves in Zhumadian include the average phosphorus content of the soil,vegetation biomass,the current,plantation age and temperature.The main influencing factors of Robinia pseudoacacia artificial forest ecosystem carbon reserves in Luohe include the average soil nitrogen content and average density,canopy density,vegetation biomass,plantation age,rainfall and temperature.The results showed that the vegetation biomass,plantation age and temperature of vegetation are all the main factors of Robinia pseudoacacia artificial forest ecosystem carbon reserves in different regions.