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Three typical substropical evergreen broad-leaved forests ( Castanopsis eyrei ,  Schima superba  and  Cyclobalanopsis glauca ) in Wuyi Mountain National Nature Reserve of Jiangxi Province were selected to investigate its carbon sequestration capacity. The biomass and soil bulk density of sample investigation were get by setting sample investigation, field quadrat sampling, indoor sample making, experimental analysis testing, data statistics and analysis. The organic carbon content of vegetation layer (arbor layer, shrub layer and herbaceous layer, litter layer) and soil layer (0-10cm, 10-20cm, 20-30cm, 30-50cm and 50-100cm) were also get. The carbon density and carbon storage of subtropical evergreen broad-leaved forests vegetation and soil were estimated which including  Castanopsis eyrei ,  Schima superba  and  Cyclobalanopsis glauca . The investigation results had shown that:  The average organic carbon content of each vegetation layer in the investigation plot (400 m 2 ) of Wuyi Mountain National Nature Reserve was arbor layer (54.07%)&gt; shrub layer (52.8%)&gt; herbaceous layer (47.5%), in which the average organic carbon content of the three subtropical evergreen broad-leaved forests in the arbor layer was close 52.97% to 54.87% and the total average content was 54.07%. The average carbon density of the forest vegetation layer was 178.3587t/hm 2 , the average carbon density of the vegetation layer was arbor layer (176.0273t/hm 2 )&gt; shrub layer (1.3043t/hm 2 )&gt; litter layer (0.8144t/hm 2 )&gt; herbaceous layer (0.2127t/hm 2 ); the average carbon density of each forest species was  Castanopsis eyrei  (213.5141t/hm 2 )&gt;  Schima superba  (168.9069t/hm 2 )&gt;  Cyclobalanopsis glauca  (152.6551t/hm 2 ).  Investigation sample of subtropical evergreen broad-leaved forest (400 m) in Wuyi Mountain National Nature Reserve, Jiangxi Province 2  The average soil bulk density of each soil layer cm 0-100 g/cm was 0.868-1.816 g/cm 3  both soil organic carbon content and soil carbon density decreased with the increase of soil depth. The average organic carbon content of each soil layer was between 3.75% and 12.48%, and the average soil carbon density was between 62.85t/hm 2  and 146.14t/hm 2 . The average total carbon density of the soil in the investigated sample plots was 754.77t/hm 2 , of which the average soil carbon density in investigation sample plots in  Castanopsis eyrei ,  Schima superba  and  Cyclobalanopsis glauca  was 911.49t/hm 2 , 762.56t/hm 2  and 543.22t/hm 2  respectively.  The average carbon storage of the investigation sample plot (400m 2 ) in Jiangxi Wuyi Mountain National Nature Reserve were  Castanopsis eyrei  forest (45.0002t) &gt; Cyclobalanopsis glauca  forest (36.6087t) &gt;  Schima superba  forest (28.4850t), the average soil carbon storage(30.1908t) was 4.23 times the average carbon storage(7.1314t).

Investigation on carbon sequestration capacity of typical subtropical evergreen broad-leaved forest in Wuyi Mountain National Nature Reserve