| Through the combination of standard survey and biomass measurement,the carbon content,biomass and carbon storage of the arbor layer,understory vegetation layer,soil layer and ecosystem of Yunnan pine forest in the middle of the slope are set.The distribution characteristics were estimated,and the carbon increment and distribution pattern characteristics of each component after 8 years were analyzed.The results showed that the carbon content of various organs of Pinus yunnanensis was 41.01%~47.35%,and the average carbon content was as follows: dry>leaf>branches>skin>rough root>middle root>fine root.The 10~15-year-old Yunnan pine forest had a total biomass of 32.75% higher than that of the control after the contour was reversed.The contour of the slope increased significantly the biomass of the underground part of 10-15 years old and 15-30 years old(30.73%).And 35.71%),the total biomass increased significantly with the increase of the age group.The contour step height significantly increased the aboveground carbon storage(32.79%)and the underground carbon storage(35.60%)of the 15 to 30-year-old Yunnan pine forests from 10 to 15 years old.The layout of the contours increased significantly by 10 to 8 after the 8th grade.The carbon increase of the aboveground part of the 15 th and 15 th to 30 th instars(53.33% and 20.45%)and the carbon increase of the underground part(53.70% and 73.43%);the shrub leaves of the understory vegetation layer after the elevation of the reverse slope The carbon content in litter and soil layer was significantly higher than that in the control.The variation of carbon content in shrub layer,herb layer,litter layer and soil layer under the control and layout heights was 44.12%~48.44%,37.10%~43.36,respectively.%,7.04% to 45.85% and 0.41% to 2.00%.The biomass of litter layer in the understory vegetation layer was the highest under different treatments,followed by shrub layer and herb layer.The biomass of shrub layer,herb layer and litter layer were significantly higher than the control by 8.17%.13.24% and 9.29%.The carbon storage of understory vegetation layer and soil layer showed soil layer > litter layer > shrub layer > herb layer,and carbon increment showed soil layer > litter layer > herb layer > shrub layer,under the same level of anti-slope treatment The shrub layer(11.64% higher),the herb layer(15.63% higher)and the soil layer(50.74% higher)had higher carbon storage than the control.The shrub layer,herb layer,litter and soil layer carbon increments were compared with the control.Increased by 28.21%,27.17%,15.54% and 34.92%.The biomass of the arbor layer,litter layer,shrub layer and herb layer of Yunnan pine forest was 9.07%,9.29%,8.17% and 13.24% higher than that of the control,and the biomass of each layer was as follows: Layer(75.65 t·hm-2)> litter layer(23.69 t·hm-2)> shrub layer(4.68 t·hm-2)> herb layer(1.80 t·hm-2).The carbon storage of the pine forest ecosystem in Yunnan was 27.10% higher than that of the control,and the carbon storage in each layer from high to low was: soil layer(132.09 t·hm-2)> arbor layer(35.32 them-2)> litter layer(5.94 t·hm-2)> shrub layer(2.11 t·hm-2)> herb layer(0.74 t·hm-2),accounting for 72.12%,22.26%,3.86 of total carbon storage,respectively.%,1.31% and 0.45%.The carbon increase of the pine forest ecosystem in Yunnan was significantly higher than that of the control(29.68%),and the tree layer,shrub layer,herb layer,litter and soil layer were 31.76%,28.21%,27.17% higher,respectively.15.54% and 34.92%.In summary,the description of the contour slope can effectively promote plant growth and increase the accumulation of carbon storage in the vegetation layer and soil layer.Therefore,when artificial forestation can be applied to the local conditions,a certain level of anti-stepping measures can be applied to accelerate the local carbon pool and The recovery rate of the ecological environment increases the productivity of forest ecosystems. |
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