Vegetation restoration in the coarse-textured soil area is more conducive to the accumulation of Fe-associated C

IF 5 1区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION Journal of Applied Ecology Pub Date : 2024-08-02 DOI:10.1111/1365-2664.14749
Lingbo Dong, Jiajia Li, Defu Wang, Su Wang, Weifang Hu, Jianzhao Wu, Yang Liao, Zhijing Yu, Xi Wang, Jinyuan Yu, Jiwei Li, Zhouping Shangguan, Lei Deng
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粗质土壤区域的植被恢复更有利于与铁相关的碳的积累。
植被恢复对土壤碳库动态有重要影响。高度稳定的铁(Fe)相关碳是土壤碳库的重要组成部分,在土壤碳循环中起着至关重要的作用。然而,植被恢复期间铁相关碳的变化仍然是一个知识空白。本文采集了耕地、草地、灌木林地和林地三种土壤类型(壤土、黄土和砂土)的 0-60 厘米土壤样本,以探讨植被恢复对铁相关碳的响应。结果表明,研究区土壤中铁相关碳的比例在 2.2% 至 26.3% 之间。植被恢复后,表层土壤(0-20 厘米)中黄土和沙土中的铁相关碳含量增加,但壤土中的铁相关碳含量减少。植被恢复期间,土壤中铁相关碳的积累效率在较粗的土壤中更高。此外,在各种土地利用类型中,土壤有机质(SOM)库较高的林地的铁螯合碳含量和比例最高。植被恢复以两种不同的方式影响土壤中的铁-相关碳:(1)增加土壤有机质和溶解有机碳,提高碳和铁的结合效率,促进铁-相关碳的积累;(2)降低土壤中铁的总含量,将三价铁(Fe(III))还原为二价铁(Fe(II)),破坏碳和铁的结合,降低土壤中铁-相关碳的含量,这两种不同的方式在三种土壤类型中均有发现。此外,粗粒土壤的 SOM 积累效率更高,植被恢复对根系的破坏更小,因此铁相关碳的积累效率更高。综述与应用。林地可能是提供土壤固碳效益的最佳植被类型,可有效增加土壤碳库并最大限度地提高铁相关碳含量。这项研究填补了植被恢复对土壤铁相关碳影响方面的知识空白,为更好地理解土壤碳循环和制定科学的植被恢复措施提供了科学依据。
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来源期刊
Journal of Applied Ecology
Journal of Applied Ecology 环境科学-生态学
CiteScore
9.80
自引率
3.50%
发文量
229
审稿时长
4.5 months
期刊介绍: Journal of Applied Ecology publishes novel, high-impact papers on the interface between ecological science and the management of biological resources.The editors encourage contributions that use applied ecological problems to test and develop basic theory, although there must be clear potential for impact on the management of the environment.
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