CHEN Long,GUO Haiquan,SHANG Xiaoyu,et al.Change Trend and Determinants of Organic Carbon Storage in Ground Substrate of Xinle City[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(03):34-40.[doi:10.11942/j.issn1002-2767.2023.03.0034]
新乐市地表基质有机碳储量变化趋势及影响因素
- Title:
- Change Trend and Determinants of Organic Carbon Storage in Ground Substrate of Xinle City
- 文章编号:
- 7
- 文献标志码:
- A
- 摘要:
- 为探究有机碳储量在地表基质中的变化趋势及影响因素,利用新乐市2005年和2021年两期数据,按地表基质类型划分方式计算新乐市地表基质有机碳储量,分析新乐市地表基质有机碳储量的变化趋势及决定因素。结果表明,2005-2021年,新乐市地表基质有机碳总储量呈增长趋势;表层平均有机碳含量和单位基质碳含量均与基质粒径大小呈负相关;表层(0~0.2 m)平均有机碳含量增长率与基质粒径大小呈负相关;深层(2.0 m)平均有机碳含量增长率与基质粒径大小呈正相关。新乐市地表基质有机碳总储量处于增长趋势,其中粗骨土中有机碳储量减少的主要因素是河道采砂造成地表基质破坏,有机碳流失;砂土和壤土中有机碳储量呈增长的主要因素是植树造林和合理的农业活动。
- Abstract:
- In order to explore the change trend and influencing factors of organic carbon reserves in the ground substrate, ground substrate organic carbon reserves of Xinle City were calculated according to the classification method of ground substrate types using the data of Xinle City in 2005 and 2021, and the change trend and determining factors of Xinle City′s ground substrate organic carbon reserves were analyzed. The results showed that, from 2005 to 2021, the total storage of organic carbon in the ground substrate of Xinle City showed an increasing trend; The average organic carbon content and unit substrate carbon content in the surface layer were negatively correlated with the substrate particle size; The growth rate of the average organic carbon content in the surface layer (0-0.2 m) was negatively correlated with the size of the substrate particle size; The growth rate of the average organic carbon content in the deep layer (2.0 m) was positively correlated with the size of the substrate particle size. The total storage of organic carbon in ground substrate in Xinle City was on the increase trend, and the main factor for the decrease of organic carbon storage in coarse soil was the destruction of ground substrate and the loss of organic carbon caused by sand mining in river channels.The main factors for the increase of organic carbon storage in sandy soil and loam were afforestation and reasonable agricultural activities.
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备注/Memo
收稿日期:2022-12-06