Title: Soil Ecological Stoichiometry of Conifer-Broadleaved Plantations of Different Age in Southern Subtropical Region
Abstract: The objective of this study was to clarify the soil stoichiometric characteristics of conifer-broadleaved plantations(CBP) with different age in Southern subtropical region. The soil in different CBP were selected to measure soil organic carbon(C),total nitrogen(N),total phosphorous(P),and total potassium(K) storages. The results indicated that the storage of soil organic C,total N,total P and total K were 106. 72—136. 61 t·hm- 2,9. 17—11. 19 t·hm- 2,4. 07—6. 77 t·hm- 2and 321. 85—370. 59 t·hm- 2,respectively,and storage of four kinds of elements first decreased and then increased with increasing forest age. Soil C / N,C / P,C / K,N / P,N / K,P / K ratio were relatively stable,and these were no significant difference(P 0. 05) among different CBP.The soil organic carbon storage was significantly positively correlated with total N storage,C / N,C / P,C / K,N / P and N / K(P 0. 01),and organic carbon storage of soil had an important impact on total N storage,and showed relatively consistent variation. The total nitrogen storage of soil was significantly positively correlated with C / P,C /K,N / P and N / K(P 0. 01). The total phosphorous storage of soil was significantly negatively correlated with C /P and N / P(P 0. 01),as well as positively correlated with C / N and P / K(P 0. 01). The results could provide a scientific basis for sustainable management of plantation.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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