一种预测河流溶解N2O浓度的机器学习方法

By combining river information, water and sediment physicochemical parameters, and microbial composition and function data into a machine learning model, the problem of accuracy in predicting river N2O concentration was solved, achieving high-precision N2O concentration prediction and optimization of emission reduction strategies.

CN120688657BActive Publication Date: 2026-07-17HUNAN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN UNIV
Filing Date
2025-04-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to accurately predict river N2O concentrations at different scales, and traditional methods fail to reflect spatiotemporal variability in local environments. Machine learning models lack sediment parameters and cannot fully capture the complex processes of N2O generation and emission.

Method used

Using machine learning methods, combined with river information, physicochemical parameters of water and sediment, and microbial composition and function data, classification and regression models were constructed to predict N2O concentration using the optimal dataset. The correlation between microorganisms and environmental factors was analyzed to reveal the N2O generation mechanism.

Benefits of technology

It enables high-precision prediction of N2O concentration at different scales, identifies key driving factors, optimizes management strategies, and provides a more comprehensive emission reduction strategy.

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Abstract

本发明公开了一种预测河流溶解N2O浓度的机器学习方法,包括以下步骤:计算目标流域各区域的N2O溶存浓度,根据N2O溶存浓度进行各区域N2O浓度分组;分别获取目标流域的宏观特征、环境物理化学指标与微观特征并作为解释变量,将各区域的N2O浓度分组结果作为响应变量,构建数据集分别训练对应的分类模型,选取分类效果最好的分类模型对应的解释变量,将N2O溶存浓度作为响应变量,构建新的数据集训练回归模型;从解释变量中筛选最优参数,使用最优参数训练最优回归模型,根据最优回归模型预测的N2O溶存浓度计算N2O排放通量预测值。本发明在提升N2O浓度预测精度的同时,揭示微生物对N2O生成的关键调控机制。
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