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- Title
Effects of broadleaf plantation and Chinese fir (Cunninghamia lanceolata) plantation on soil carbon and nitrogen pools.
- Authors
WAN Xiao-hua; HUANG Zhi-qun; HE Zong-ming; HU Zhen-hong; YANG Jing-yu; YU Zai-peng; WANG Min-huang
- Abstract
A comparative study was conducted on the soil C and N pools in a 19-year-old broadleaf plantation and a Chinese fir (Cunninghamia lanceolata) plantation in subtropical China, aimed to understand the effects of tree species on the soil C and N pools. In the broadleaf plantation, the C and N stocks in 0-40 cm soil layer were 99. 41 Mg ⋅ hm-2 and 6.18 Mg ⋅ -2, being 33. 1 % and 22. 6 % larger than those in Chinese fir plantation, respectively. The standing biomass and the C and N stocks of forest floor in the broadleaf plantation were 1. 60, 1. 49, and 1. 52 times of those in Chinese fir plantation, respectively, and the differences were statistically significant. There was a significant negative relationship between the forest floor C/N ratio and the soil C and N stocks. In the broadleaf plantation, the fine root biomass in 0-80 cm soil layer was 1. 28 times of that in the Chinese fir plantation, and the fine root biomass in 0-10 cm soil layer accounted for 48. 2 % of the total fine root biomass. The C and N stocks in the fine roots in the broadleaf plantation were also higher than those in the Chinese fir plantation. In 0-10 cm soil layer, its C stock had a significant positive relationship with the fine root C stock. It was suggested that as compared with Chinese fir plantation, the soil in broadleaf plantation had a greater potential to accumulate organic carbon.
- Subjects
CHINA; CARBON in soils; NITROGEN in soils; CHINA fir; PLANTATIONS; FOREST biomass
- Publication
Yingyong Shengtai Xuebao, 2013, Vol 24, Issue 2, p345
- ISSN
1001-9332
- Publication type
Article