Journal of Food, Agriculture and Environment

Characteristics of organic carbon and its relationship with nutrients in soils derived  from different parent rocks in a Pinus tabulaeformis forest ecosystem

Author(s):

Lihui Gou¹, Lishui Nie ¹*, Zhaodi Sun ¹, Wu Jigui ²

Recieved Date: 2013-06-19, Accepted Date: 2013-10-10

Abstract:

The objective of this study is to investigate the characteristics of soil organic carbon (SOC) and its relationship with two soils derived from differemt different parent  rocks (granite vs. limestone) under natural Pinus tabulaeformis forest in the Song Mountain Nature Reserve of Beijing, China. The effects of different soil parent rocks on content and vertical distribution patterns of SOC were discussed. Results showed that vertical distribution of the two soils both showed an exponential decrease in SOC content with the increase of soil depth. The SOC content in the soil derived from limestone was significantly higher than that of granite, especially at the 20-40 cm soil depth. These results indicated that there were significant SOC differences not only in different parent  rocks but also at different soil depths across the sites, as well as, across sampling plots within a site. In addition, in this study, it was demonstrated that SOC, total nitrogen, available phosphorus, and available potassium were significantly positively correlated in the two soil types. Furthermore, SOC regression equations in these two soil types showed that soil total nitrogen was the main factor of variations.

Keywords:

Soil organic carbon (SOC), soil nutrient, parent rocks, natural Pinus tabulaeformis forest, Song Mountain Nature Reserve

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 2094-2099

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