Soil and water characteristics in a hypersaline playa lake developing highly reducing conditions plus field photographs

These data belong to the research project AQUASALT, EraNET that in Spain has been supported by grant PCI2018-09299 funded by MCIN/AEI/10.13039/50110 0 011033 and co-funded by the European Union. The data corresponds to the Spanish study area, the Salineta inland saline wetland (41°28'55.34"N, 0° 9'23.59"W) located 60 km far from Zaragoza city, in one of the most arid areas of the Central Ebro Basin, NE Spain. In this project we studied the redox conditions of the hypersaline soils in Salineta playa-lake, which are subjected to intermittent flooding, along a period of 17 months, in 2019 and 2020. The dataset includes two Excel spreadsheets with the soil and water characteristics from samples obtained during wet (April) and dry (September) seasons in 2019, and at the end of the experiment, July 2020. The sampling was designed to characterize the soil and water in the context of the study of soil redox conditions using IRIS (Indicators of Reducing of Soils) devices. The selected sampling locations represent a gradient of water within the playa-lake: bare soil very frequently flooded (SAL-1); bare soil often flooded (SAL-2); and the plot colonized by annual and perennial halophytes (SAL-3). Soil data includes the main description of the soil layers per date in the three sampling plots, and their chemical and physical analytical data determined in the field and in the lab. We analyzed water from three different origins: i) surface water when present, ii) shallow groundwater from piezometers up to 80 cm depth, iii) suction probes installed at 20 and 40 cm depth, and iv) saturated paste extracts of soil samples. Photograph P1170434.jpg shows a view of the field setting of the experiment in 2019, April 17.本数据集隶属于AQUASALT研究项目，该项目属于EraNET计划，在西班牙由西班牙科学与创新部/西班牙国家研究局（MCIN/AEI/10.13039/501100011033）资助的编号为PCI2018-09299的项目支持，并由欧盟共同出资。 本数据集对应西班牙研究区域——萨利内塔内陆盐沼湿地（坐标41°28'55.34"N，0°9'23.59"W），该湿地距萨拉戈萨市60公里，地处西班牙东北部埃布罗河中游最干旱的区域之一。 本项目针对萨利内塔干盐湖的高盐土壤氧化还原条件展开研究，该类土壤会间歇性遭受洪水淹没，研究周期为2019至2020年，共计17个月。 本数据集包含两份Excel表格，收录了2019年湿季（4月）、干季（9月）以及2020年7月实验结束时采集的土壤与水体特征数据。本次采样旨在结合IRIS（土壤还原指示剂，Indicators of Reducing of Soils）设备开展土壤氧化还原条件研究，以表征研究区域内的土壤与水体特征。 选取的采样点覆盖了该干盐湖内的水分梯度：1）频繁被水淹没的裸地（SAL-1）；2）常被水淹没的裸地（SAL-2）；3）被一年生和多年生盐生植物定植的地块（SAL-3）。 土壤数据涵盖三个采样地块各采样日期的土层基本信息，以及野外与实验室测定的理化分析数据。本次分析涵盖四种不同来源的水体：i）存在时的地表水；ii）深度达80cm的测压管浅层地下水；iii）安装于20cm和40cm深度的吸力探针采集的水样；iv）土壤样品的饱和土浆浸提液。 照片P1170434.jpg展示了2019年4月17日本实验的野外场景。