Spatiotemporal variations of soil reactive nitrogen oxide fluxes across the anthropogenic landscape

Dataset contains 132 samples. Soil was sampled seasonally over one year, in November 2021, February 2022, May 2022, and August 2022. Soil was sampled from three locations, University of Warwick Wellesbourne Campus, Warwick Town, and Coventry City, corresponding to low (<1000), mid (~35,000-52,000), and high (>400,000) human population. Within these locations, samples were taken from four land-use types: agricultural, woodland, grass-dominated, and built. Here, we define ‘built’ soil as that found within one metre of human made structure such as buildings and car parks.There were three replicates of each land-use type and each location. Measured variables are potential NOy, NO and NOy - NO fluxes from intact 0-10cm soil cores, soil physicochemical properties, 16S rRNA amplicon sequencing, quantitative PCR of nitrification genes, net rates of nitrogen cycle processes, and concentrations of heavy metals measured with ICP-OES.

本数据集共包含132份土壤样本。土壤样本于一年内按季节采集，具体采样时点为2021年11月、2022年2月、2022年5月及2022年8月。采样地点共三处，分别为华威大学韦尔斯伯恩校区（University of Warwick Wellesbourne Campus）、沃里克镇（Warwick Town）与考文垂市（Coventry City），对应人类人口密度分别为低（<1000）、中（~35000-52000）及高（>400000）的区域。在上述各采样地点内，均设置四种土地利用类型的采样区：农用地、林地、草本主导植被区及建成区。本研究中“建成区土壤”定义为距人工构筑物（如建筑物、停车场）1米范围内的土壤。每种土地利用类型在每个采样地点均设置3次生物学重复。本数据集测定的指标包括：完整0-10cm原状土壤岩芯的潜在NOy、NO及NOy-NO通量，土壤理化性质，16S rRNA扩增子测序（16S rRNA amplicon sequencing），硝化功能基因的定量PCR（quantitative PCR），氮循环过程净速率，以及采用电感耦合等离子体发射光谱法（ICP-OES）测定的重金属浓度。