数字农科院2.0

Machine Learning Integrated with a Causal Pathway Framework Unravels Differential Mechanisms of Biochar-Driven Soil Organic Carbon Dynamics under Cadmium Stress

文献类型： 外文期刊

作者： Sun, Xuan;Du, Zhaolin;Ding, Jian;Zheng, Shunan;Yao, Yanpo;Wu, Lina;Chen, Hongan;An, Yi;Luo, Yongming

作者机构：

关键词： machine learning;partial least-squares pathmodeling;cadmium;biochar;soil organiccarbon

期刊名称： ENVIRONMENTAL SCIENCE & TECHNOLOGY

ISSN： 0013-936X

年卷期： 2026 年

页码：

收录情况： SCIE（2025版） ; ; EI（2025版） ; ; Nature Index（2023版）

摘要： Biochar-mediated soil organic carbon (SOC) dynamics in cadmium (Cd)-contaminated soils are governed by complex interactions among biochar properties, soil characteristics, and environmental factors. However, the key drivers and causal mechanisms remain unclear, hindering the design of biochar strategies for carbon sequestration. This study integrated machine learning (ML) and partial least-squares path modeling (PLS-PM) to establish an interpretable causal framework. Using a global data set, a high-precision random forest model quantified the primary drivers. Soil properties dominated the predictions (60.27%), with phosphorus (P) (optimal level: <0.7 g/kg) and pH emerging as the most critical factors. Nonlinear thresholds showed that the Cd role shifted from positive to insignificant beyond 5.8 mg/kg. PLS-PM quantified the causal pathways: (i) physicochemical interactions (e.g., P competitive adsorption reduced SOC by beta = -0.62, p < 0.001); (ii) climate-mediated cascades; and (iii) biochar aging feedback. Validation of the model using independent data sets beyond the training scope demonstrated a reasonable relative Delta SOC prediction error range (+/- 6%-20%). SOC accumulation increased with higher pH, Cd content, and biochar dosage. Site-specific design should prioritize (i) inherent soil properties (pH and P), (ii) Cd gradients, and (iii) tailored biochar parameters. The framework enhances biochar design to optimize SOC sequestration and synergistic Cd management.

分类号：

  • 相关文献

[1]Optimal biochar selection for cadmium pollution remediation in Chinese agricultural soils via optimized machine learning. Zhaolin Du,Xuan Sun,Shunan Zheng,Shunyang Wang,Lina Wu,Yi An,Yongming Luo. 2024

[2]COMPARATION AMONG SORPTIVE REDUCTIONS IN AGRICULTURAL CADMIUM DIFFUSE LOSS BY FOUR DIFFERENT MATERIALS DERIVED BIOCHAR AMENDED SOIL. Yang, Hao,Jing, Ming,Bai, Yongquan,Yang, Bo,Zheng, Dan,Jiao, Wei. 2021

[3]Soil ridging combined with biochar or calcium-magnesium-phosphorus fertilizer application: Enhanced interaction with Ca, Fe and Mn in new soil habitat reduces uptake of As and Cd in rice. Ting Zhang,Md Abu Sayem Jiku,Lingyi Li,Yanxin Ren,Lijuan Li,Xibai Zeng,Gilles Colinet,Yuanyuan Sun,Lijuan Huo,Shiming Su. 2023

[4]Comparation among sorptive characteristics of cadmium by solid wastes-derived biochar from aqueous solution. Hao Yang,Chengchun Sun,Can Zhang,Wei Jiao,Dan Zheng. 2021

[5]The immobilization of cadmium by rape straw derived biochar in alkaline conditions: Sorption isotherm, molecular binding mechanism, and in-situ remediation of Cd-contaminated soil. Yihao Wang,Yubo Yan,Chao He,Ya Feng,Aminu Darma,Jianjun Yang. 2024

[6]Iron-modified biochar effectively mitigates arsenic-cadmium pollution in paddy fields: A meta-analysis. Beilei Wei,Dongliang Zhang,Paramsothy Jeyakumar,Lukáš Trakal,Hailong Wang,Keke Sun,Ying Wei,Xiaoqi Zhang,Huarong Ling,Shijie He,Hanqian Wu,Zhigang Huang,Chong Li,Ziting Wang. 2024

[7]Preparation, characteristics and mechanisms of Cd(II) adsorption from aqueous solution by mango kernel-derived biochar. Zhang, Yuzhe,Zhang, Liming,Han, Chuan,Ren, Yanfang,Ji, Yu,Ge, Yunjie,Li, Zhaojun,He, Junyu. 2022

[8]Enhanced remediation of cadmium-contaminated farmland by smooth vetch (Vicia villosa var.) coupled with phosphorus/sulfur co-doped biochar: Synergetic performance and mechanism. Fuxuan Bi,Zhao Jiang,Mengning Wang,Qiutong Lin,Xiaoyang Liu,Libo Fu,Hongli Fan,Weidong Cao,Jianhua Qu,Ying Zhang. 2025

[9]Dual role of functional bacterial agent based on Bacillus subtilis coupled with smooth vetch (Vicia villosa var.) on cadmium-contaminated soil: Synergistic passivation and nutrient supply. Qiwen An,Jie Liu,Yitong Liu,Fuxuan Bi,Zonghao Dong,Xu Liu,Zhao Jiang,Libo Fu,Hongli Fan,Jianhua Qu,Ying Zhang. 2025

[10]Machine learning phenotyping and GWAS reveal genetic basis of Cd tolerance and absorption in jute. Zemao Yang,Alei Li,Jiquan Chen,Zhigang Dai,Jianguang Su,Canhui Deng,Gaoao Ye,Chaohua Cheng,Qing Tang,Xiaoyu Zhang,Ying Xu,Xiaojun Chen,Bibao Wu,Zhihai Zhang,Xuying Zheng,Lu Yang,Liang Xiao. 2024

[11]Biomass microwave pyrolysis characterization by machine learning for sustainable rural biorefineries. Yadong Yang,Hossein Shahbeik,Alireza Shafizadeh,Nima Masoudnia,Shahin Rafiee,Yijia Zhang,Junting Pan,Meisam Tabatabaei,Mortaza Aghbashlo. 2022

[12]Tree-based machine learning model for visualizing complex relationships between biochar properties and anaerobic digestion. Yi Zhang,Yijing Feng,Zhonghao Ren,Runguo Zuo,Tianhui Zhang,Yeqing Li,Yajing Wang,Zhiyang Liu,Ziyan Sun,Yongming Han,Lu Feng,Mortaza Aghbashlo,Meisam Tabatabaei,Junting Pan. 2023

[13]Machine learning in clarifying complex relationships: Biochar preparation procedures and capacitance characteristics. Yuxuan Sun,Peihao Sun,Jixiu Jia,Ziyun Liu,Lili Huo,Lixin Zhao,Yanan Zhao,Wenjuan Niu,Zonglu Yao. 2024

[14]Machine learning unveils the role of biochar application in enhancing tea yield by mitigating soil acidification in tea plantations. Rongxiu Yin,Xin Li,Yating Ning,Qiang Hu,Yihu Mao,Xiaoqin Zhang,Xinzhong Zhang. 2025

[15]Building a knowledge-based machine learning loop framework to optimize biochar for anaerobic digestion performance. Yi Zhang,Yu Fu,Zhonghao Ren,Yeqing Li,Yijing Feng,Zheng Hao Leong,Junting Pan. 2025

[16]Unleashing redox activity of biochar via a green thermal air oxidation process: Insights from machine learning. Zhixu Du,Zhuozhuo Sun,Xiangrong Li,Haiqin Zhou,Feng Shen,Jianhua Hou,Lichun Dai. 2025

[17]Chelators Induced Uptake Of Cadmium A.nd Modulation Of Water R elation, Antioxidants, And Photosynthetic Traits Of Maize. Anwar, Sumera,Anwar, Sumera,Anwar, Sumera,Anwar, Sumera,Khan, Shahbaz,Bashir, Rohina,Fahad, Shah,Hussain, Iqbal. 2019

[18]Enhanced Cadmium Immobilization In Saturated M.edia By Gradual Stabilization O f Goethite In The Presence Of Humic Acid With Increasing Ph. Chen, Yali,Li, Yongtao,Ma, Jie,Ma, Jie,Weng, Liping,Li, Yongtao. 2019

[19]Cadmium Remobilization From Shoot To G.rain Is Related To P h Of Vascular Bundle In Rice. Zhang, Bing-Lin,Zhang, Bing-Lin,Ouyang, You-Nan,Xu, Jun-Ying,Zhang, Bing-Lin,Xu, Jun-Ying,Liu, Ke,Liu, Ke,Zhang, Bing-Lin. 2018

[20]Induction Of S-Nitrosoglutathione Reductase Reduces R.oot Cadmium Uptake By I nhibiting Iron-Regulated Transporter 1. Guan, Mei Yan,Liu, Xing Xing,Jin, Chong Wei,Guan, Mei Yan,Zhu, Ya Xin. 2019

作者其他论文 更多>>