您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Plant litter decomposition is regulated by its phosphorus content in the short term and soil enzymes in the long term

文献类型： 外文期刊

作者： Liu, Xiu 1 ; Tou, Congyue 1 ; Zhou, Jingjie 3 ; Chen, Ji 4 ; Wanek, Wolfgang 5 ; Chadwick, David R. 6 ; Jones, Davey L. 6 ; Wu, Lianghuan 1 ; Ma, Qingxu 1 ;

作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Key Lab Environm Remediat & Ecosyst Hlth, Minist Educ, Hangzhou 310058, Peoples R China

2.Zhejiang Univ, Coll Environm & Resource Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China

3.China Natl Rice Res Inst, Innovat Ctr Saline Alkali Land Comprehens Utilizat, Hangzhou 310006, Peoples R China

4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China

5.Univ Vienna, Ctr Microbiol & Environm Syst Sci, Dept Microbiol & Ecosyst Sci, Div Terr Ecosyst Res, Djerassipl 1, A-1030 Vienna, Austria

6.Bangor Univ, Sch Environm & Nat Sci, Bangor LL57 2UW, Gwynedd, Wales

关键词： Initial litter C:N:P ratio; C-13 -labeled plant litter; C:N:P stoichiometry; Microbial P limitation; Plant litter decomposition

期刊名称：GEODERMA （ 影响因子：6.6； 五年影响因子：7.3 ）

ISSN： 0016-7061

年卷期： 2025 年 457 卷

页码：

收录情况： SCI

摘要： Plant litter decomposition plays a vital role in soil carbon (C) cycling and nutrient release, significantly influencing agricultural resource utilization and soil fertility management. Litter quality-defined by its C, nitrogen (N), and phosphorus (P) contents, as well as C:N:P stoichiometry-is a key factor regulating its decomposition. However, the influence of litter C:P ratios on plant litter decomposition, particularly in relation to changes in soil C:N:P stoichiometry, microbial biomass, and extracellular enzyme activities, remains unclear, especially in agroecosystems. In this study, the effects of litter C:P ratios on its decomposition were investigated using C-13-labeled plant litter with naturally occurring gradients of C:P ratios (ranging from 377 to 1,288) in an 84-day incubation experiment. After 84 days, cumulative (CO2)-C-13 emissions derived from litter accounted for approximately 50 % of total CO2 emissions. Litter with higher P content increased (CO2)-C-13 emissions, whereas higher litter C:P ratios suppressed emissions, indicating that litter with lower C:P ratios decomposed more rapidly in the short-term (14 days). In contrast, elevated soil exoenzymatic C:P and N:P ratios stimulated (CO2)-C-13 emissions during long-term decomposition (84 days). These findings suggest that litter P content primarily regulates short-term decomposition, while soil enzyme activity plays a key role in long-term decomposition. Overall, this study highlights the pivotal role of P limitation in litter decomposition, particularly in the early stages, and underscores the potential benefits of P fertilization in enhancing decomposition rates, thereby improving resource efficiency and soil fertility in agroecosystems.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台