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[1]LI Xuefeng,SONG Yali,WANG Keqin,et al.Effects of Contour Reverse-Slope Terrace on Carbon Storage and Incremental Distribution in Understory Layer of Pinus yunnanensis Forest in Middle Yunnan Province[J].Research of Soil and Water Conservation,2019,26(04):19-25.

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Effects of Contour Reverse-Slope Terrace on Carbon Storage and Incremental Distribution in Understory Layer of Pinus yunnanensis Forest in Middle Yunnan Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 04 Page number: 19-25 Column: Public date: 2019-06-11

Title:: Effects of Contour Reverse-Slope Terrace on Carbon Storage and Incremental Distribution in Understory Layer of Pinus yunnanensis Forest in Middle Yunnan Province

Author(s):: LI Xuefeng, SONG Yali, WANG Keqin, ZHANG Yujian, YANG Xiaoqian; College of Ecology and Soil & Water Conservation, Southwest Forestry University, Kunming 650224, China

Keywords:: contour step; biomass; carbon storage; carbon increment

CLC:: S718.5

DOI:: -

Abstract:: Through the combination of standard survey and biomass measurement, the carbon storage of the undergrowth vegetation layer and soil layer of Yunnan pine forest under contour reverse-slope terrace was estimated, and the carbon increase of each layer after 8 years was analyzed. The results showed that: (1) The contents of carbon in shrub leaves, decomposed litter and soil layer under contour reverse-slope terrace were significantly higher than that of the control; and the carbon contents of shrub layer, herb layer, litter layer and soil layer under the control and contour reverse-slope terrace were 441.2~484.4 g/kg,371.0~433.6 g/kg,70.4~458.5 g/kg,4.1~20.0 g/kg, respectively; (2) the litter layer biomass in the understory vegetation layer was the highest under different treatments, followed by the shrub layer and the herb layer; the biomass of the shrub layer, the herb layer and the litter layer under contour reverse-slope terrace were significantly 8.17%, 13.24%, 9.29% higher than the control. respectively; the biomass of each layer of undergrowth vegetation layer significantly increased; (3) the carbon storage of understory vegetation layer and soil layer decreased in the order: soil layer > litter layer > shrub layer > herb layer; and carbon increment decreased in the order: soil layer > litter layer > herb Layer > shrub layer; carbon storage of shrub layer, herb layer and soil layer) was 11.64%, 15.63%, 50.74% higher than that of the control, respectively; the soil carbon increment in the shrub layer, herb layer, litter layer and soil layer increased by 28.21%, 27.17%, 15.54% and 34.92%, respectively. The measurement of contour reverse-slope terrace can effectively promote plant growth and increase the accumulation of carbon storage in the understory vegetation layer and soil layer. Therefore, it is possible to apply appropriate contour reverse-slope terrace measures in accordance with local conditions during the afforestation to accelerate the recovery of local carbon pools and ecological environment, and increase the production capacity of the Yunnan pine ecosystem.

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