Dynamic Changes of Soil Organic Carbon Storage of Pinus sylvestris var. mongolica Plantations at Different Ages in Saihanba Area

文献类型： 外文期刊

第一作者： Zeng, Guangjuan

作者： Zeng, Guangjuan;Wu, Shu;Li, Jing;Zhao, Zhongbao;Wan, Han

作者机构：

关键词： Soil organic carbons stocks (SOC-stocks); Pinus sylvestris var. mongolica plantations; stand ages; influence factors

期刊名称：JOURNAL OF SUSTAINABLE FORESTRY （ 影响因子：1.8； 五年影响因子：1.7 ）

ISSN： 1054-9811

年卷期： 2025 年

页码：

收录情况： SCI

摘要： In order to understand the dynamic changes of soil organic carbons stocks (SOC-stocks) in Pinus sylvestris var. mongolica plantation of different stand ages, four different ages (young forest, middle-aged forest, mature forest, overmature forest) plantation in Saihanba Machinery Forest Farm were selected as the research object to explore the distribution characteristics of SOC-stocks and discuss its influencing factors. The results reflected that with the increase of forest age, soil organic carbon (SOC) content, and SOC-stocks in different layers generally showed an upward trend, and the same layer in different ages showed a significant difference (p < .05). The SOC content in the 0-60 cm layer showed that overmature forest (27.44 g/kg) > young forest (16.42 g/kg) > mature forest (15.21 g/kg) > middle-aged forest (8.75 g/kg). The SOC-stocks in the 0-60 cm layer showed that overmature forest (223.94 Mg/ha) > mature forest (134.10 Mg/ha) > young forest (126.81 Mg/ha) > middle-aged forest (80.98 Mg/ha). Pearson correlation analysis indicated that stand age, SOC content, above-ground biomass, litter amount, root biomass, soil moisture, catalase activity, invertase activity, and soil bulk density were the key factors affecting SOC-stocks. Results showed that during the growth process from young forest to overmature forest, there was an overall carbon sink effect.

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