Divergent effects of straw and biochar on soil carbon priming are depth-dependent in subtropical Moso bamboo forests
文献类型: 外文期刊
作者: Jiang, Zhenhui;Zhang, Shaobo;Tang, Caixian;Xiao, Mouliang;Zhou, Jiashu;Luo, Yu;Ge, Tida;Yu, Bing;White, Jason C.;Li, Yongfu
作者机构:
关键词: Quality;Priming effect;Microbial diversity;Microbial biomass;Enzyme activities;Subsoil
期刊名称: BIOLOGY AND FERTILITY OF SOILS
ISSN: 0178-2762
年卷期: 2025 年
页码:
收录情况: SCIE(2025版)
摘要: Intensive management practices are recognized for reducing soil organic carbon (SOC) in Moso bamboo (Phyllostachys edulis) forests. Straw and biochar are commonly utilized to enhance SOC in these forests, yet their application may influence SOC mineralization in the subsoil. To investigate the effects of straw and biochar amendments on the priming of SOC mineralization in the subsoil, a 40-day incubation experiment was conducted using soils collected from three depths (0-20 cm, 20-40 cm, and 40-60 cm) in a subtropical Moso bamboo forest. Straw and biochar were applied as organic amendments, and the priming effects were quantified using 13C natural abundance methods. The straw consistently enhanced the SOC mineralization by 41-84%, inducing a positive priming effect that was most pronounced at the 20-40 cm depth. Conversely, biochar exhibited a depth- and time-dependent influence, initially suppressing the SOC mineralization (Day 8), resulting in a negative priming effect with a lower value in subsoils (20-40 cm), but then transitioning to a positive priming effect over time. The factors influencing these priming effects varied with soil depth. In surface soils, the SOC composition, particularly aromatic and O-alkyl carbon, emerged as the primary determinant, explaining 30% of the variation. In contrast, at depths of 20-40 cm and 40-60 cm, soil properties such as ammonium nitrogen, available phosphorus, and water-extractable organic carbon played a more significant role, accounting for 40-47% of the variation. These findings highlight the complex roles of straw and biochar in shaping the priming effect across soil profiles.
分类号:
- 相关文献
作者其他论文 更多>>
-
Preliminary Study on Optimizing Rice Production in Cold Regions: Yield and Nutritional Trade-Offs Between Transplanting and Mechanical Hill-Drop Seeding
作者:Ding, Huaguo;Zhou, Songjin;Han, Jiabao;Liu, Yingying;Cao, Ziliang;Lei, Lei;Bai, Mingliang;Luo, Yu;Yang, Guang;Chen, Lei;Liu, Kai;Sun, Wu-Rina;Sun, Pinglian;Sun, Chenshi
关键词:cold-region rice;planting method;yield components;nutrient elements;cultivar
-
Nano-Stimulated Immunity: Synthesis and Functionalization of CuS Induce Multilevel Defense Responses against Fusarium in Tomato (Solanum lycopersicum)
作者:Qin, Luyao;Deng, Chaoyi;Boyjoo, Yash;Sharma, Sudhir;Ashraf, Hina;Wang, Meng;Zhao, Lijuan;Sabliov, Cristina M.;Bhaw-Luximon, Archana;Dimkpa, Christian O.;Wang, Yi;Chen, Shibao;White, Jason C.
关键词:CuS nanoparticles;nanobio interaction;plantdisease;gene expression
-
Photoinduced radical germyloximation of activated alkenes
作者:Wang, Wenshan;Qiu, Gonghong;Ma, Wenjing;Chen, Guiyun;Qu, Lingbo;Shang, Tianyi;Liu, Yan;Yu, Bing
关键词:
-
Tetracycline effects on arsenate reduction in agricultural soils under different soil water contents
作者:Zeng, Saiqi;Chen, Yanxi;Zhang, Nan;Tang, Caixian;Li, Hongna;Wang, Jiawen;Xu, Jianming
关键词:Tetracycline;Arsenate reduction;Soil water content;Soil redox potential;Arsenate-reducing bacteria
-
Effects of TGFBR1 on Proliferation of Dermal Papilla Cells in Fine-Wool Sheep
作者:Xiao, Tong;Luo, Yu;Yuan, Chao;Song, Yufang;Tang, Jianxiang;Lu, Zengkui;Liu, Jianbin;Guo, Tingting
关键词:fine-wool sheep;dermal papilla cells;TGFBR1;hair follicle;single-cell transcriptomics
-
Faster soil organic carbon turnover in MAOM versus POM: straw input causes larger microbial driven soil organic carbon decomposition but higher straw accumulation in MAOM
作者:Yu, Xiongsheng;Wang, Lili;Wang, Qiang;Zhou, Guoyan;Sun, Han;Guggenberger, Georg;Li, Yongfu;Yakov, Kuzyakov;Luo, Yu;Fu, Yingyi
关键词:Straw turnover;Sonication;Particulate organic matter;Mineral-associated organic matter;Bacterial community;Microbial metabolisms
-
Positive Microbial-Enzyme Feedbacks on Soil Organic Carbon Enhance Understory Cultivation of Paris polyphylla Across Forest Types
作者:Zhang, Hongbin;Liu, Shouzan;Zhang, Shaobo;Bai, Yan
关键词:cbhI-functional genes;forest ecosystems;microbial community;mimics wild cultivation;Paris polyphylla