[1]YANG Guoguo,KONG Yuhua,ZHAO Jiabao,et al.Differences of Dissolved Organic Carbon and Nitrogen in Soils of Four Mixed Pine-Oak Plantations[J].Research of Soil and Water Conservation,2017,24(06):79-83.
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Differences of Dissolved Organic Carbon and Nitrogen in Soils of Four Mixed Pine-Oak Plantations
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 06
Page number:
79-83
Column:
Public date:
2017-11-24
- Title:
- Differences of Dissolved Organic Carbon and Nitrogen in Soils of Four Mixed Pine-Oak Plantations
- CLC:
- S714.2
- DOI:
- -
- Abstract:
- In order to reveal the distribution characteristics of soil active carbon and nitrogen in different forest types in the north subtropics, four typical representative mixed plantations of Pine and Quercus acutissima in the southern mountainous area of Zhumadian were selected, and the components of 0-20 cm soil layer such as dissolved organic carbon (DOC), dissolved organic nitrogen (DON), and so on were studied. The experimental results showed that the detail contents of soil DOC in four forest sites decreased in the order:pure Quercus acutissima > mixed Quercus acutissima and mongolica > mixed Pinus taeda and Quercus acutissima > mixed Pinus massoniana and Quercus acutissima, the contents of soil DOC decreased in the order:mixed Pinus massoniana and Quercus acutissima > pure Quercus acutissima > mixed Quercus acutissima and mongolica > mixed Pinus taeda and Quercus acutissima, and the statistics differences between different forest types are significantly(p<0.05). In the vertical profile, the contents of soil DOC and DON for the four forest types decreased significantly with increase of soil depth (p<0.05). The max proportion of DOC/SOC, DON/TN, DOC/DON was found in pure Quercus acutissima, mixed Pinus massoniana and Quercus acutissima, pure Quercus acutissima, respectively. There were no significant differences in the vertical spatial distribution, soil DOC and DON are significantly (p<0.05) or extremely significantly (p<0.01) related with soil water content, soil hardness, available potassium and total nitrogen.
- References:
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1900-01-01