Repeat overhead photographs of microplots in a cross-scale interactions experiment (CSIS) at Jornada Basin LTER, 2013-ongoing

This dataset contains archived overhead photos collected from microplots in a long-term experiment (2013-present) of cross-scale interactions (CSIs) at the Jornada Basin LTER site in southern New Mexico, U.S.A. Experimental treatments were initiated in 2013 at 15 experimental blocks, each with 4 treatment plots: plant-scale herbicide of mesquite shrubs, patch-scale connectivity modifiers (ConMods), herbicide + ConMods, and control without manipulations. Repeat, overhead (downward-looking) photographs of ten "microplots" in each plot were taken for estimation of litter, soil, and vegetation cover in the experimental treatment and control plots over time. Photographs have been rotated and then cropped to provide standardized areas for this analysis. The photographs are archived by year in Zip files. This study is ongoing and new photos will be added annually. Cover estimates derived from these photos are in EDI dataset knb-lter-jrn.210413005.

本数据集包含美国新墨西哥州南部乔纳达盆地长期生态研究站（LTER）开展的跨尺度相互作用（CSI）长期实验（2013年至今）中，从微样方采集的存档俯视照片。实验处理于2013年在15个实验区块启动，每个区块包含4个处理样方：植物尺度的豆科灌木除草剂处理、斑块尺度的连通性调节剂（ConMods）、除草剂+连通性调节剂，以及无操作对照。为估算实验处理和对照样方中枯落物、土壤及植被覆盖度的随时间变化，研究人员对每个样方内的10个“微样方”进行了重复俯视（向下拍摄）拍照。照片已进行旋转和裁剪，以提供本分析所需的标准化区域。这些照片按年份以ZIP文件格式存档。本研究仍在进行中，每年将新增照片。从这些照片中得到的覆盖度估算值可在EDI数据集knb-lter-jrn.210413005中获取。