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Microbial-mediated shifts regulate the trade-off between soil organic carbon content and stability after cropland afforestation in Eastern China

文献类型：期刊论文

作者Liu, Jie4; Yang, Lin4; Wang, Jie4; Zhang, Lei3; Qian, Yongqi2; Wei, Ren4; Cui, Wenkai4; Zhou, Chenghu1,4
刊名APPLIED SOIL ECOLOGY
出版日期2026-03-01
卷号219页码:106808
关键词Soil organic carbon Particulate organic carbon Mineral-associated organic carbon Microbial-derived carbon Croplands Planted forests
ISSN号0929-1393
DOI10.1016/j.apsoil.2026.106808
产权排序2
文献子类Article
英文摘要Cropland soil organic carbon (SOC) is a vital component of the global carbon cycle. At the same time, the expansion of adjacent planted forests, driven by their ecological benefits, further shapes regional carbon dynamics. This offers a pivotal research opportunity to investigate divergences in SOC and its fractions, as well as carbon formation and stabilization mechanisms in croplands and planted forests converted from croplands. Elucidating divergent influencing mechanisms of SOC and its fractions between croplands and planted forests is critical to deciphering different land-use impacts on carbon storage and optimizing land-use-specific carbon sequestration management under global warming. We collected 39 paired cropland-planted forest soil samples in a major grain-producing region of Eastern China, and used piecewise structural equation modeling and random forest modeling to quantify and compare the effects of physical carbon parameters, microbial-derived carbon (MDC), and biotic-abiotic drivers on SOC and its fractions between croplands and adjacent planted forests. Croplands exhibited significantly higher SOC, particulate organic carbon (POC), and mineral-associated organic carbon (MAOC) contents than planted forests, exceeding forest levels by 34%, 68%, and 25%, respectively. Compared to planted forests, croplands had a higher POC proportion but a lower MAOC proportion. Furthermore, the dominant drivers of SOC, POC, and MAOC shifted from biotic factors in croplands to abiotic factors in planted forests. Dissolved organic carbon (DOC) exhibited a stronger positive contribution to SOC accumulation in croplands than in planted forests. Fungal necromass carbon (FNC) contributed more to SOC, POC, and MAOC than bacterial necromass carbon (BNC) in croplands, but the opposite was true in planted forests. Collectively, planted forests exhibited lower but more stable SOC compared to croplands, demonstrating greater sensitivity to abiotic drivers and stronger MAOC dominance (constituting 78.85% of total SOC). Conversely, cropland SOC was primarily regulated by biotic drivers and MDC inputs. Therefore, land-use-specific management is essential to maximize the complementary carbon sequestration potentials of croplands and planted forests, thereby enhancing global SOC accumulation and stabilization.
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WOS关键词MATTER ; NITROGEN ; STABILIZATION ; LITTER
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001672632500001
出版者ELSEVIER
源URL[http://ir.igsnrr.ac.cn/handle/311030/220897]  
专题资源与环境信息系统国家重点实验室_外文论文
通讯作者Yang, Lin
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China;
2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arable Land China, Beijing 100081, Peoples R China
3.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA 94720 USA;
4.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210023, Peoples R China;
推荐引用方式
GB/T 7714		 Liu, Jie,Yang, Lin,Wang, Jie,et al. Microbial-mediated shifts regulate the trade-off between soil organic carbon content and stability after cropland afforestation in Eastern China[J]. APPLIED SOIL ECOLOGY,2026,219:106808.
APA Liu, Jie.,Yang, Lin.,Wang, Jie.,Zhang, Lei.,Qian, Yongqi.,...&Zhou, Chenghu.(2026).Microbial-mediated shifts regulate the trade-off between soil organic carbon content and stability after cropland afforestation in Eastern China.APPLIED SOIL ECOLOGY,219,106808.
MLA Liu, Jie,et al."Microbial-mediated shifts regulate the trade-off between soil organic carbon content and stability after cropland afforestation in Eastern China".APPLIED SOIL ECOLOGY 219(2026):106808.

入库方式： OAI收割

来源：地理科学与资源研究所

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