Data for: Biological mitigation of soil nitrous oxide emissions by plant metabolites

Plant metabolites significantly affect soil nitrogen (N) cycling, but their influence on nitrous oxide (N2O) emissions has not been quantitatively analyzed on a global scale. We conduct a comprehensive meta-analysis of 173 observations from 42 articles to evaluate global patterns of, and principal factors controlling, N2O emissions in the presence of root exudates and extracts. Overall, plant metabolites promoted soil N2O emissions by about 10%. However, the effects of plant metabolites on N2O emissions from soils varied with experimental conditions and properties of both metabolites and soils. Primary metabolites, such as sugars, amino acids, and organic acids, strongly stimulated soil N2O emissions, by an average of 79%, while secondary metabolites, such as phenolics, terpenoids, and flavonoids, often characterised as both biological nitrification inhibitors (BNIs) and biological denitrification inhibitors (BDIs), reduced soil N2O emissions by an average of 41%. The emission mitigatio..., , , # Biological mitigation of soil nitrous oxide emissions by plant metabolites [https://orcid.org/0009-0000-0549-9400](https://orcid.org/0009-0000-0549-9400) This dataset serves the article \"Biological mitigation of soil nitrous oxide emissions by plant metabolites\" from the Global Change Biology, containing data of the cumulative N2O emissions under 173 different treatments extracted from 42 studies. The meanings represented by different abbreviations are shown in the “Table legend”. The “Total data” table contains data on plant metabolite properties(metabolite type, metabolite additive amount, and plant type), soil properties(soil pH, texture, and clay content) and experimental background (nitrogen fertilizer type, nitrogen application rate, experiment duration, and experiment type) extracted from 42 studies. “Data sources” table are the 42 studies from which the data is sourced. ## Description of the data and file structure An extensive literature search to identify all relevant st...植物代谢物显著影响土壤氮（N）循环，但目前尚未在全球尺度上对其调控土壤氧化亚氮（N₂O）排放的效应开展定量分析。本研究对42篇文献中的173组观测数据进行了综合荟萃分析，旨在评估根系分泌物与提取物存在下全球土壤N₂O排放的格局及其主控因子。 总体而言，植物代谢物可使土壤N₂O排放提升约10%。然而，植物代谢物对土壤N₂O排放的影响随实验条件、代谢物自身性质与土壤性质的不同而存在显著差异。诸如糖类、氨基酸与有机酸等初级代谢物可强烈刺激土壤N₂O排放，平均增幅达79%；而诸如酚类、萜类与黄酮类等次级代谢物——这类物质常被归类为生物硝化抑制剂（BNIs）与生物反硝化抑制剂（BDIs）——可使土壤N₂O排放平均降低41%。排放调控…… # 植物代谢物对土壤氧化亚氮排放的生物调控 [https://orcid.org/0009-0000-0549-9400](https://orcid.org/0009-0000-0549-9400) 本数据集服务于发表于《Global Change Biology》的论文《植物代谢物对土壤氧化亚氮排放的生物调控》，包含从42项研究中提取的173种不同处理下的累积N₂O排放数据。不同缩写的含义详见「表注」。「总数据表」收录了从42项研究中提取的植物代谢物属性（代谢物类型、代谢物添加量与植物类型）、土壤属性（土壤pH、质地与黏粒含量）以及实验背景信息（氮肥类型、施氮量、实验时长与实验类型）。「数据来源表」则列出了本数据集所依托的42项原始研究。 ## 数据与文件结构说明 本研究开展了广泛的文献检索以甄别所有相关研究……