Comparison of soil C and N in rubber plantation and seasonal rain forest

With the rubber plantation and seasonal rain forest in Xishuangbanna of Southwestern China as test objectives, a comparative study was conducted on their litter input, soil total C and N contents, and seasonal changes of soil active C and N from 2006 to 2007. Comparing with seasonal rain forest, rub...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 20; no. 5; p. 1013
Main Authors Zhang, Min, Zou, Xiao-Ming
Format Journal Article
LanguageChinese
Published China 01.05.2009
Subjects
Carbon - analysis
China
Ecosystem
Hevea - growth & development
Hevea - metabolism
Nitrogen - analysis
Soil - analysis
Trees - growth & development
Trees - metabolism
Tropical Climate
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Summary:With the rubber plantation and seasonal rain forest in Xishuangbanna of Southwestern China as test objectives, a comparative study was conducted on their litter input, soil total C and N contents, and seasonal changes of soil active C and N from 2006 to 2007. Comparing with seasonal rain forest, rubber plantation had lower amount of aboveground litterfall and higher amount of floor mass, reflecting the lower decomposition rate (turnover coefficient, K) of litters, and had higher C/N ratio of litters and soil, indicating that the organic matters in rubber plantation were more resistant to degradation. The surface soil total organic C, labile organic C, and microbial biomass C concentrations in rubber plantation accounted for 60%-70% of those in seasonal rain forest, and the soil NO3(-)-N concentration and pH value in rubber plantation were lower than those in seasonal rain forest, indicating that the conversion from seasonal rain forest to rubber plantation decreased the C and N inputs from aboveground litterf
ISSN:1001-9332