Soil properties and greenhouse gas fluxes of Prairie Pothole Region wetlands: a comprehensive data release

This data release encompass numerous studies examining soil properties and greenhouse gas fluxes of Prairie Pothole Region (PPR) wetland catchments. The PPR is one of the largest wetland ecosystems in the world, encompassing approximately 770,000 square kilometers of the north-central U.S. and south-central Canada, with the U.S. portion including parts of Iowa, Minnesota, South Dakota, North Dakota, and Montana. The data included in this release span a 19-year period (1997–2016) and represent a diversity of studies ranging from localized (e.g., wetland catchments and complexes) to region-wide efforts that span the PPR’s climate and land-use gradient. Data from individual wetland catchments encompass a variety of wetland classes ranging from small, ephemerally-ponded wetlands to large, shallow lakes. Although study designs and methodologies differ slightly among the studies, the overarching methods are comparable and allow the data to be combined into a single data release. The data release consists of combined datasets (i.e., all studies) for soils, greenhouse gases, topography, water chemistry, weather, and covariate or explanatory variables such as water depth, soil moisture, and temperature. A majority of the studies also present data from the entire wetland catchment, with data collected from numerous landscape positions along transects spanning from the wetland center to the catchment boundary. Sample frequency among the studies ranges from a single site visit per year, to season-long, biweekly sample events across multiple years. Related External Resources: https://openknowledge.fao.org/items/96dd525e-5737-425a-bb04-9b03a9c26738 (Recarbonizing global soils – A technical manual of recommended management practices. Volume 6 - Forestry, wetlands, and urban soils – Case studies)

本数据集收录了多项针对草原坑洼地带（Prairie Pothole Region，PPR）湿地流域的土壤属性与温室气体通量相关研究。该区域是全球规模最大的湿地生态系统之一，覆盖美国中北部与加拿大中南部约77万平方公里的区域，其中美国境内部分涵盖艾奥瓦州、明尼苏达州、南达科他州、北达科他州以及蒙大拿州的部分辖区。本次发布的数据集涵盖1997至2016年共19年的研究数据，研究范畴覆盖广泛，既包含针对局地尺度（如单个湿地流域及其复合群）的小型研究，也有覆盖PPR全域气候与土地利用梯度的大尺度区域调查。单个湿地流域的采样数据涵盖多种湿地类型，从小型临时积水湿地到大型浅湖均有涉及。尽管各研究的试验设计与方法存在细微差异，但核心研究方法具备可比性，因此可将所有研究数据整合为单一组数据集发布。本次发布的整合数据集包含所有研究的相关数据，涵盖土壤、温室气体、地形、水化学、气象等要素数据，以及水深、土壤含水量、温度等协变量或解释变量。多数研究还提供了完整湿地流域的相关数据，采样点沿从湿地中心延伸至流域边界的样带布设，覆盖多种景观位置。各研究的采样频率差异显著，从每年单次野外踏勘采样，到多年内每季每两周一次的高频采样均有覆盖。相关外部资源：https://openknowledge.fao.org/items/96dd525e-5737-425a-bb04-9b03a9c26738 《全球土壤固碳——推荐管理实践技术手册 第六卷：林业、湿地与城市土壤——案例研究》