文献类型： 外文期刊

作者： Zhang, Jinrui ¹ ; Wang, Kai ¹ ; Hao, Tianxiang ³ ; Zhang, Jinbo ⁴ ; Mueller, Christoph ⁵ ; Florent, Perrine ² ; Yan, Hong ² ; Ren, Siyang ² ; Qu, Kaijing ¹ ; Ren, Kaige ¹ ; Li, Jingjing ¹ ; Su, Yiting ² ; Ding, Fan ⁹ ; Wang, Jingkuan ⁹ ; Wang, Xihe ¹⁰ ; Chen, Yanling ¹² ; Lv, Shihua ¹ ; Chadwick, David R. ² ; Jones, Davey L. ² ; Liu, Xuejun ¹ ;

作者机构： 1.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci,State Key Lab Nutrie, Beijing Key Lab Farmland Soil Pollut Prevent & Rem, Beijing 100193, Peoples R China

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

3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

4.Nanjing Normal Univ, Sch Geog, Nanjing 210023, Peoples R China

5.Univ Coll Dublin, Sch Biol & Environm Sci, Earth Inst, Dublin D04 V1W8, Ireland

6.Justus Liebig Univ, Inst Plant Ecol, Liebig Ctr Agroecol & Climate Impact Res, D-35392 Giessen, Germany

7.Hong Kong Baptist Univ, Dept Chem, State Key Lab Environm & Biol Anal, Hong Kong, Peoples R China

8.China Univ Min & Technol Beijing, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China

9.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Peoples R China

10.Xinjiang Acad Agr Sci, Inst Soil & Fertilizer & Agr Sparing Water, Urumqi 830091, Peoples R China

11.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Changping Soil Qual Natl Observat & Res Stn, Beijing 100081, Peoples R China

12.Qingdao Agr Univ, Coll Resources & Environm Sci, Qingdao 266109, Peoples R China

13.Sichuan Acad Agr Sci, Inst Agr Resources & Environm, Chengdu 610066, Peoples R China

关键词： Long-term plastic film mulching; Microplastics residue; Soil gross N transformations

期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：5.0； 五年影响因子：5.4 ）

ISSN： 0929-1393

年卷期： 2025 年 208 卷

页码：

收录情况： SCI

摘要： While long-term plastic film mulching (LFM) of farmland can improve the yield and quality of crops, it also poses ecological risks through the accumulation of microplastics (MPs) in soil and alterations in soil nitrogen (N) cycling. However, no systematic studies (based on long-term experiments) have studied the effects of LFM on both soil MPs accumulation and gross N transformations. In this study, topsoils (0-20 cm) were collected from four LFM farmlands in Xinjiang, Liaoning, Sichuan, and Shandong provinces of China. The 15N isotope pool dilution method and Ntracebasic model were applied to quantify the impact of LFM on soil gross N transformation rates. Our results showed that LFM significantly increased the accumulation of MPs, particularly in the 0-10 cm layer. The gross N transformation rates varied among sites, reflecting regional differences in soil type. Mineralization rates increased in Xinjiang, Liaoning, and Sichuan under LFM, while microbial assimilation and autotrophic nitrification decreased in Xinjiang. In Sichuan, reduced soil nitrification potential led to low levels of mineral N (NH4+-N and NO3--N) retention. Furthermore, in Shandong, LFM decreased the mineralization potential of recalcitrant organic N but significantly enhanced heterotrophic nitrification. To improve predictions of agroecosystem N cycling, we show with this study that it is important to consider soil differences which drive gross N transformation rates associated with LFM.