Land (MDPI)·8月22日 · 周六论文阅读 0

Evidence Based on Digital Agriculture in China (Land 2026, 15(9), 1531) — 基于700个中国县的双重机器学习证据

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基于700个中国县的数字农业实证研究,数据规模大,方法新颖,但发表于8月22日,时效性较低。

摘要

Benjian Wu, Xing Huang, Bo Zhou, Jianmin Li, Lifang Hu (中国农业科学院/中国农业大学/南京大学等) 共同发表论文。基于2010—2024年中国700个县的县级面板数据,将"数字农业创新与应用基地"试点视为准自然实验,采用双重机器学习模型考察智慧农业建设对城乡土地利用效率差距的影响。研究发现:(1)智慧农业建设显著缩小了城乡土地利用效率差距,机制渠道指向农业技术进步、资本配置优化、农业产业升级;(2)政策效应在原贫困县、土地流转率高、数字基础强的县更显著;(3)分解结果显示差距缩小主要由农村追赶驱动,而非城市衰退。本研究澄清了智慧农业建设如何通过要素再配置平衡城乡土地利用。

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信源(1 个)

双重机器学习 土地利用率 城乡差距 智慧农业相关资讯

MDPI Land 2026-08-22·8月22日 · 周六77 分 论文农业AI与大模型阅读 1

数字农业试点对城乡土地利用效率差距的影响 基于700个中国县的双重机器学习证据

原文标题:Smart Agriculture Construction and the Urban-Rural Gap in Land Use Efficiency: Evidence from Digital Agriculture in China。基于2010-2024年700个中国县的面板数据,将数字农业创新与应用基地试点项目作为准自然实验,应用双重机器学习模型检验智慧农业建设对城乡土地利用效率差距的影响。结果显示智慧农业建设显著缩小城乡土地利用效率差距,渠道证据指向农业技术进步、资本配置改善、农业产业升级;政策效应仅在原贫困县、土地流转率较高县、数字基础较强县显著;分解结果显示该计划提升农村土地利用效率及农村资本与劳动边际收益而城市指标统计不变,表明所观察到的趋同主要源于农村追赶而非城市衰退。本研究从要素配置视角阐明智慧农业建设如何再平衡城乡土地利用并识别异质性与渠道证据的统计边界。

智慧农业(中英文) 2026, 8(3): 176-189·8月5日 · 周三79 分 论文农业AI与大模型3 个信源同时报道 阅读 12

数字技术能提升粮食生产韧性吗?——基于双重机器学习的因果推断——许佳彬等《智慧农业(中英文)》2026年第3期

许佳彬、秦亚茹、温浩洋、仇焕广、崔钊达在《智慧农业(中英文)》2026年第3期发表《数字技术能提升粮食生产韧性吗?——基于双重机器学习的因果推断》论文。研究聚焦数字技术对粮食生产韧性的因果效应,基于中国省级面板数据,运用双重机器学习(DML)方法有效解决高维控制变量与潜在混杂问题,准确估计数字技术对粮食生产韧性的处理效应。研究发现,数字技术显著提升粮食生产韧性,主要通过要素重组效应、数据要素与传统生产要素的协同配置等中介机制实现;数字技术的赋能效应呈现区域异质性,在粮食主产区和数字基础设施较好的地区效应更为显著。基于研究结论,建议构建数字农业社会化服务新体系,依托数字平台的规模效应,有效弥合小农户与现代农业之间的数字鸿沟,推动粮食生产韧性持续提升。

Zenodo (CERN European Organization for Nuclear Research)·10月21日 · 周三69 分 论文社会化服务与规模经营农业人工智能与决策模型阅读 0

Evaluation of Concept-Rank Collapse Audits for Computer Vision Agriculture Disease Classifiers Under Low-Label Regimes: An Interpretability Capacity Bound for Smallholder Fungicide Selectivity

提出可解释性容量上界,评估低标签下概念秩崩溃审计的可靠性。

Zenodo (CERN European Organization for Nuclear Research)·10月21日 · 周三70 分 论文社会化服务与规模经营农业人工智能与决策模型阅读 0

Evaluation of Concept-Probe Temporal-Stability Audits for Computer Vision Agriculture Disease Classifiers Under Seasonal Phenology Drift: An Interpretability Decay Bound for Smallholder Fungicide Timing

提出概念探针时间稳定性审计与可解释性衰减界,判断何时需重新审计。