福建长汀县不同母岩的马尾松人工林土壤碳储量特征
首发时间:2021-11-16
摘要:本文以福建省长汀县两种不同母岩土壤的恢复马尾松林为研究对象,对不同母岩马尾松林的不同土层土壤性质和土壤有机碳储量进行分析。研究结果表明:两种母岩马尾松林中,花岗岩发育的土壤具有更高的砾石比以及土壤pH值,并且在表层土壤容重较大,而碎屑岩发育的土壤表现为更高的粉粒和黏粒含量;对比不同土层有机碳储量,碎屑岩土壤有机碳储量显著高于花岗岩;从各土层有机碳储量占比上看,花岗岩土壤有机碳储量主要集中于0-10 cm,而碎屑岩土壤有机碳储量在0-40 cm分布比较均匀,而深层土壤有机碳储量占比在不同母岩没有显著差异;不同母岩中土壤有机碳储量分布的差异可能与土壤pH、砾石比以及黏粒和粉粒的含量有关。结果表明,母岩对长汀县马尾松人工林土壤有机碳的积累具有深刻的影响。
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Characteristics of soil carbon storage in Pinus massoniana plantations of different parent rocks in Changting, Fujian
Abstract:Degradation of soil carbon is an effective method for increasing soil carbon sequestration function, in order to further understand the red soil erosion area in the process of vegetation restoration in different parent rock soil carbon accumulation characteristics, this paper takes fujian changting county soil recovery in two different rocks as the research object, the different rock and soil soil properties and soil organic carbon is analyzed. The results showed that the granitic soil had higher gravel ratio and soil pH value, and the soil bulk density was higher in the topsoil, while the clastic soil had higher silt and clay content. Compared with different soil layers, clastic soil organic carbon storage is significantly higher than granite. In terms of the ratio of organic carbon storage in each soil layer, the organic carbon storage in granite soil is mainly concentrated in 0-10 cm, while the organic carbon storage in clastic soil is evenly distributed in 0-40 cm, while the ratio of organic carbon storage in deep soil has no significant difference in different parent rocks. The difference of soil organic carbon storage distribution in different parent rocks may be related to soil pH, gravel ratio, clay and silt content. The results showed that parent lithology was of great significance to the accumulation of soil organic carbon during the restoration of Pinus massoniana forests in red soil erosion area.
Keywords: Parent rock Pinus massoniana Soil organic carbon storage
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福建长汀县不同母岩的马尾松人工林土壤碳储量特征
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