Biodiversity and Carbon Sequestration of Typical Forest Types in Qingyuan County

Background investigations were conducted on 137 permanent sub compartments in typical forest communities like pine forest, Cunninghamia lanceolata forest, broad-leaf forest, mixed forest of coniferous and broad-leaf, Phyllostachys edulis stand in Qingyuan county, southwest Zhejiang province. Soil was sampled out of subcompartments, and thickness of soil, of humus and litter was recorded. The results showed that the species richness, Shannon-Wiener diversity index and Pielou evenness index of the five forest communities were significantly different ( P<0.05). Species richness was ordered by broad-leaf forest>mixed forest of coniferous and broad-leaf>mixed forest>C. lanceolata forest>pine forest> bamboo stand. Broad-leaf forest and coniferous and broad-leaf mixed forest had the average carbon storage of 384.94 and 359.99 t/ha. The community structure and species diversity of C. lanceolata forest were relatively lower, but the average carbon storage was 363.20 t/ha. The community structure of pine forest was relatively lower in species diversity with mean carbon storage of 343.26 t/ha. Bamboo forest with high human disturbance had the simplest structure, the lowest species diversity with mean carbon storage of 235.17 t/ha.