Soil Carbon Sequestrations in Forest Soils in Relation to Parent Material and Soil Depth in South-Eastern Nigeria

• 作者: Benarden Ngozi Aririguzo Chinonso Millicent Chris-Emenyonu Chioma Mildred Ahukaemere Emmanuel Uzoma Onweremadu John Didacus Njoku
• 来源期刊: 美国气候变化期刊(英文)
• 学科: 农学
• 关键词: Carbon Sequestration FOREST SOILS Parent material Soil Depth
• 年，卷（期）: 2020,（4）
• 页码范围: 400-409
• 页数: 10页
• 分类号: S15

摘要

<span style="white-space:normal;">There has been increased interest in soil organic carbon in recent times because of its role in carbon sequestration. Different parent materials affect soil properties and hence will influence how much carbon is sequestered by soil. The study was conducted in June 2019 to investigate soil carbon stock in forest soils with respect to their parent materials in three States in South-eastern Nigeria. Sampling was aided by the location map of the area and free soil survey method was used to locate sampling points. 0ne profile was dug in each location and described using the Food and Agricultural Organization guideline. A total of twelve soil samples were collected and analyzed for selected properties. Results showed that sand content was significantly higher in soils under coastal plain sands (851.96 g<span style="white-space:nowrap;">·</span>kg</span><sup style="white-space:normal;"><span style="white-space:nowrap;">&#8722;</span>1</sup><span style="white-space:normal;">) and was lowest in soils of Imo clay shale (605.60 g<span style="white-space:nowrap;">·</span>kg</span><sup style="white-space:normal;">&#8722;1</sup><span style="white-space:normal;">). Clay content was higher in soils of Imo clay shale (277.34 g<span style="white-space:nowrap;">·</span>kg</span><sup style="white-space:normal;"><span style="white-space:nowrap;">&#8722;</span>1</sup><span style="white-space:normal;">) and was lowest in coastal plain sand (118.80 g<span style="white-space:nowrap;">·</span>kg</span><sup style="white-space:normal;"><span style="white-space:nowrap;">&#8722;</span>1</sup><span style="white-space:normal;">). Silt and clay had moderate variation in coastal plain sand (>15 ≤ 35%) and high variations in Asu River and Imo clay shale (CV > 35%). The soils studied were generally acidic with values ranging (3.52) in soils formed from coastal plain sand, followed by forest soils of Imo clay shale (3.64) and Asu river group (3.85). Soil organic carbon decreased with increase in soil depth in