Carbon content

biomass

carbon storage and distribution pattern in tree layer of Pinus yunnanensis forest with contour reverse-slope terrace arrangement were estimated in central Yunnan through standard plot survey and biomass measurement

and characteristics of carbon increment and distribution in each organ were analyzed in 8 years. The results showed that the variation of carbon content in different organs was 41.01%~47.35% under the treatment of contour reverse-slope terrace

the average carbon content was ranked as sti > leaf > branch > bark > thick root > median root > fine root. Aboveground biomass of the 10~15-year-old plantation was 32.75% higher under the treatment of contour reverse-slope terrace than that of control. Belowground biomass of the 10~15-year-old and 15~30-year-old plantation (30.73% and 35.71%) were increased significantly under contour reverse-slope terrace

and the total biomass raised significantly with the increasing of age group. Carbon storage of aboveground in 10~15-year-old (32.79%) and carbon storage of belowground in the 15~30-year-old (35.60%) were significantly increased under contour reverse-slope terrace. After 8 years of arranging contour reverse-slope terrace

carbon increment of aboveground (53.33% and 20.45%) and carbon increment of belowground (53.70% and 73.43%) increased significantly in 10~15-year-old and 15~30-year-old plantation. In conclusion

contour reverse-slope terrace should be pay close attention in the process of afforestation. Artificial afforestation should be carried out in accordance with local conditions on the basis of contour reverse-slope terrace to increase the afforestation area and vegetation carbon storage in slope areas so as to protect the local ecological environment.