A global overview of studies about land management, land-use change, and climate change effects on soil organic carbon
A global overview of studies about land management, land-use change, and climate change effects on soil organic carbon
复制标题
关于土地管理、土地利用变化以及气候变化对土壤有机碳影响的研究综述（从全球视角）
DOI：
10.1111/gcb.15998
复制
发表时间：
2021-12-07
影响因子：
11.6
通讯作者：
Demenois, Julien
中科院分区：
文献类型：
--
作者：
Beillouin, Damien;Cardinael, Remi;Demenois, Julien
土壤有机碳（SOC）增加或减少的主要驱动因素包括土地管理、土地利用变化和气候变化。成千上万的原始研究都集中在SOC变化的这些驱动因素上，现在越来越多的荟萃分析中汇编了这些研究。为了严格评估这一领域的研究工作，我们检索并描述了192项SOC库存或浓度的荟萃分析。这些荟萃分析包括1910年至2020年在150个国家进行的13，200多项原始研究。首先，我们表明，尽管随着时间的推移越来越多的研究，研究的地理覆盖范围是有限的。例如，土地管理、土地利用变化和气候变化对SOC的影响仅在北非和中非、中东和中亚偶尔进行研究。其次，荟萃分析调查了有限数量的土地管理做法，主要是矿物施肥，有机添加剂和耕作。第三，荟萃分析的质量和透明度相对较低。最后，我们讨论了越来越多的研究和需要更多的本地，可重复使用的，多样化的知识，如何保持高SOC股票或恢复耗尽SOC股票之间的不匹配。
Major drivers of gains or losses in soil organic carbon (SOC) include land management, land-use change, and climate change. Thousands of original studies have focused on these drivers of SOC change and are now compiled in a growing number of meta-analyses. To critically assess the research efforts in this domain, we retrieved and characterized 192 meta-analyses of SOC stocks or concentrations. These meta-analyses comprise more than 13,200 original studies conducted from 1910 to 2020 in 150 countries. First, we show that, despite a growing number of studies over time, the geographical coverage of studies is limited. For example, the effect of land management, land-use change, and climate change on SOC has been only occasionally studied in North and Central Africa, and in the Middle East and Central Asia. Second, the meta-analyses investigated a limited number of land management practices, mostly mineral fertilization, organic amendments, and tillage. Third, the meta-analyses demonstrated relatively low quality and transparency. Lastly, we discuss the mismatch between the increasing number of studies and the need for more local, reusable, and diversified knowledge on how to preserve high SOC stocks or restore depleted SOC stocks.