Datasets produced by Multiscale Impacts of Cyanobacterial Crusts on Landscape Stability (2/2) (NERC grant NE/K011464/1)

Data from laboratory experiments conducted as part of project NE/K011464/1 (associated with NE/K011626/1) Multiscale Impacts of Cyanobacterial Crusts on Landscape stability. Soils were collected from eastern Australia and transferred to a laboratory at Griffith University, Queensland for conduct of experiments. Soils were characterised before, during and after simulated rainfall to determine impact of rainfall on soil surface roughness and physical crusting. For two soils (#13 DL Clay_cyano; #14 DL sand_cyano) cyanobacterial crusts were grown on subsamples and these were used to compare the response of soils with, and without, cyanobacterial soil crusts to rainfall treatment. Rainfall intensity of 60 mm hr-1 was used and rainfall was applied for 2 minutes (achieving 2 mm application), 5 minutes (achieving 5 mm application), 2 minutes (achieving 2 mm application) at 24-hour intervals with soils dried at 35°C and 30% humidity between applications in a temperature/humidity-controlled room. Variables measured were soil texture, penetrometry, salinity, splash loss, infiltration, organic matter content, occurrence of ponding, three-dimensional topography. Details of rainfall simulator, growth of cyanobacteria (where soil #13 = Acbc, soil #14 = Bcbc) and all other methods can be found in Bullard et al. 2018, 2019. Bullard, J.E., Ockelford, A., Strong, C.L., Aubault, H. 2018. Impact of multi-day rainfall events onsurface roughness and physical crusting of very fine soils. Geoderma, 313, 181-192. doi: 10.1016/j.geoderma.2017.10.038. Bullard, J.E., Ockelford, A., Strong, C.L., Aubault, H. 2019. Effects of cyanobacterial soil crusts on surface roughness and splash erosion. Journal of Geophysical Research – Biogeosciences. doi: 10.1029/2018 tbc

数据来源于作为NE/K011464/1（与NE/K011626/1相关联）项目一部分进行的实验室实验，该实验旨在探究蓝藻皮壳对景观稳定性的多尺度影响。实验所用的土壤采集自澳大利亚东部，并被转移至昆士兰州格里菲斯大学的研究室进行实验。在模拟降雨前后，对土壤进行了表征，以确定降雨对土壤表面粗糙度和物理结壳的影响。对于编号为#13 DL Clay_cyano和#14 DL sand_cyano的两种土壤，其亚样本上生长了蓝藻皮壳，并利用这些样本来比较具有和未具有蓝藻土壤皮壳的土壤对降雨处理的响应。使用60毫米每小时降雨强度，降雨持续2分钟（达到2毫米降雨量），5分钟（达到5毫米降雨量），再2分钟（达到2毫米降雨量），每隔24小时进行一次，土壤在每次降雨之间在温度/湿度控制的房间内干燥，温度为35°C，湿度为30%。测量的变量包括土壤质地、穿透度、盐度、溅散损失、渗透率、有机质含量、积水发生频率以及三维地形。降雨模拟器、蓝藻生长（其中土壤#13为Acbc，土壤#14为Bcbc）以及其他所有方法的详细信息可参考Bullard等人在2018年和2019年的研究。Bullard, J.E., Ockelford, A., Strong, C.L., Aubault, H. 2018. 多日降雨事件对极细粒土壤表面粗糙度和物理结壳的影响。Geoderma，313，181-192. doi: 10.1016/j.geoderma.2017.10.038。Bullard, J.E., Ockelford, A., Strong, C.L., Aubault, H. 2019. 蓝藻土壤皮壳对表面粗糙度和溅散侵蚀的影响。Journal of Geophysical Research – Biogeosciences，doi: 10.1029/2018 tbc。