成土母质和土地利用方式对典型红壤抗蚀性的影响
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S157.1

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中国地质调查局项目“湘江下游自然资源综合调查” (DD20220874)


Effects of parent materials and land-use types on anti-erodibility of typical red soils
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    摘要:

    [目的] 探究成土母质和土地利用方式对典型红壤抗蚀性的影响,为红壤区水土流失防治和红壤资源合理开发利用提供重要基础数据和参考依据。[方法] 以湖南省沩水流域的典型红壤为研究对象,选取了第四纪红黏土、砂岩、板页岩和花岗岩风化物等4种典型成土母质发育的旱地、稻田、园地和林地共16个类型组合的红壤,研究了不同成土母质和土地利用方式下的红壤抗蚀性差异特征。[结果] ①土地利用方式显著(p<0.05)影响红壤抗蚀性,稻田、园地和林地土壤的抗蚀性和水稳性指数均显著(p<0.05)高于旱地。②不同成土母质发育的红壤抗蚀性无显著(p>0.05)差异,且其与土地利用方式的交互作用对抗蚀性的影响不明显。③土地利用方式显著(p<0.05)改变了>0.25 mm水稳性团聚体(WSA0.25)和有机质含量,林地土壤WSA0.25含量显著(p<0.05)高于旱地,稻田土壤有机质含量显著(p<0.05)高于旱地、园地和林地。④成土母质对WSA0.25含量的影响不显著(p>0.05),但显著(p<0.05)改变了红壤有机质和黏粒含量,花岗岩风化物发育的红壤有机质和黏粒含量均显著(p<0.05)低于其他成土母质发育的红壤。⑤相关性分析显示红壤抗蚀性和水稳性指数均与WSA0.25和有机质含量呈显著(p<0.05)正相关关系,而与黏粒含量无显著(p>0.05)相关性。[结论] 土地利用方式和成土母质可通过改变WSA0.25和有机质含量影响红壤抗蚀性能,但土地利用方式对红壤抗蚀性的影响强于成土母质。在红壤水土流失防治过程中应以土地利用方式调整和布局优化为主,兼顾成土母质类型。

    Abstract:

    [Objective] The effects of parent material and land use patterns on the erosion resistance of typical red soils were explored, in order to provide fundamental data and references for soil erosion control and rational utilization of red soil resources in red soil regions. [Methods] The typical red soil of the Weishui River basin in Hunan Province was taken as the research object. A total of 16 types of red soil-including dry land, paddy fields, gardens, and forests, which were derived from four typical soil parent materials (Quaternary red clay, sandstone, plate shale, and granite)-were selected to study the differences in the anti-erodibility of red soils with different parent materials and land-use types. [Results] ① Land-use types significantly (p<0.05) affected red soil anti-erodibility. The anti-erodibility and water stability indexes of paddy fields, gardens, and forests were significantly higher (p<0.05) than those of dry land. ② There was no significant (p>0.05) difference in the anti-erodibility of red soil derived from different parent materials, and the interaction between them and land-use type on anti-erodibility was not significant. ③ Land-use types significantly (p<0.05) changed the content of water-stable aggregate (WSA0.25) and soil organic matter. The WSA0.25 of forests was significantly (p<0.05) higher than that of dry land, and the content of the soil’s organic matter in paddy soil was significantly (p<0.05) higher than that of dry land, gardens, and forests. ④ The effect of soil-forming parent materials on WSA0.25 was not significant (p>0.05), but they significantly (p<0.05) changed the content of organic matter and clay in red soil, which were significantly (p<0.05) lower in soil derived from granite than that derived from the other three parent materials. ⑤ Correlation analysis showed that the anti-erodibility and water-stable indexes were significantly (p<0.05) correlated with WSA0.25 and the soil's organic matter. [Conclusion] Both land-use types and parent materials can affect the anti-erodibility of red soil by changing WSA0.25 and the soil's organic matter, but the impact of land-use type on anti-erodibility is significantly stronger than that of the parent material. Hence, the prevention and control of soil and water loss in red soil should be based on the optimization of the adjustment and layout of land-use types, taking soil parent materials into account.

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施招,刘婷,饶宸,张文钊,刘锋,侯海军,陈生勇,何静.成土母质和土地利用方式对典型红壤抗蚀性的影响[J].水土保持通报,2025,45(2):81-90,101

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  • 收稿日期:2024-10-25
  • 最后修改日期:2025-01-04
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  • 在线发布日期: 2025-05-16
  • 出版日期: 2025-04-15