Preprint Article Version 1 This version is not peer-reviewed

Distribution of Carbon and Nitrogen and Ecological Stoichiometry of the Plant-Litter-Soil Continuum in an Evergreen Broad-Leaved Forest

Version 1 : Received: 23 October 2018 / Approved: 24 October 2018 / Online: 24 October 2018 (11:12:48 CEST)

How to cite: Wang, H.; Wang, B.; Niu, X.; Song, Q.; Bai, H.; Li, Y.; Luo, J.; Chen, H.; Nie, L.; Luo, Z. Distribution of Carbon and Nitrogen and Ecological Stoichiometry of the Plant-Litter-Soil Continuum in an Evergreen Broad-Leaved Forest. Preprints 2018, 2018100568 (doi: 10.20944/preprints201810.0568.v1). Wang, H.; Wang, B.; Niu, X.; Song, Q.; Bai, H.; Li, Y.; Luo, J.; Chen, H.; Nie, L.; Luo, Z. Distribution of Carbon and Nitrogen and Ecological Stoichiometry of the Plant-Litter-Soil Continuum in an Evergreen Broad-Leaved Forest. Preprints 2018, 2018100568 (doi: 10.20944/preprints201810.0568.v1).

Abstract

We analyzed the plant-litter-soil continuum to investigate the carbon and nitrogen distribution and ecological stoichiometry of an evergreen broad-leaved forest at Dagangshan Mountain, Jiangxi. The results showed that the average C and N contents and C:N ratios in the leaves and fine roots among 6 different tree species were 401.87g/kg, 21.41g/kg, 19.27 and 348.64g/kg, 15.73g/kg, 23.97, respectively; the average C and N contents and C:N ratios were 323.06 g/kg, 12.76 g/kg, 25.58 respectively in leaf litter, and 16.40 g/kg, 1.09 g/kg, 16.27 respectively for soil. In contrast with the C content, the total N content of the fine roots and litter had a high coefficient of variation and a high spatial heterogeneity. We ranked the six different representative tree species according to total C and N content in leaves and fine roots. The results for each species were generally consistent with each other, showing a positive correlation relationship between total C and N content in the leaves and roots. Among them, S. discolor (Champ. ex Benth.) Muell. plants displayed high carbon and nitrogen storage capacities, and on the other hand, C. fargesii Franch., C. myrsinifolia (Blume) Oersted, A. fortunei (Hemsl.) Makino, and V. fordii (Hemsl.) Airy Shaw showed a high nitrogen transfer rate. Total soil N and C decreased with depth. Soil organic carbon (SOC), soil resistant organic carbon (ROC), total N, alkali nitrogen, NH4+-N and NO3--N contents were all also negative correlated with soil depth, but the contents of the NH4+-N and NO3--N did not change significantly; The spatial distribution of soil NO3--N was significantly heterogeneous. At 0-10 cm soil depth, SOC was positively correlated with alkaline nitrogen, and at 10-20 cm soil depth, SOC was significantly positively correlated with total N. In general, when soil carbon was abundant, nitrogen supply capacity was also high.

Subject Areas

ecological chemometrics; carbon cycle; nitrogen cycle; carbon and nitrogen distribution; plant leaf-litter-soil continuum

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.