Dataset for: Snow cover variability shapes climate refugia under climate warming: insights from a cold-adapted bird

This dataset supports the study “Snow cover variability shapes climate refugia under climate warming: insights from a cold-adapted bird”. It contains grid-cell-level environmental and spatial data used to analyse climate refugia for a cold-adapted bird species (the white-winged snowfinch Montifringilla nivalis nivalis) in Iberian mountain systems. Each row corresponds to a 1 × 1 km grid cell. The dataset includes a cell identifier, binary variables describing whether the cell was classified as resistant or extinct, current SDM-derived suitability values, mean elevation of the cell, snow cover days, mean temperature, and the percentage of suitable habitat under current and historical conditions.本数据集支撑研究论文《气候变暖背景下积雪变异性塑造气候避难所：一种冷适应鸟类的研究启示》。该数据集包含用于分析伊比利亚山地系统中冷适应鸟类——白翅雪雀（Montifringilla nivalis nivalis）气候避难所的格网级环境与空间数据。 每一行对应一个1×1千米的格网单元。数据集包含格网标识符、用于表征该单元被归类为抗灭绝区域或已灭绝区域的二分类变量、由当前物种分布模型（Species Distribution Model, SDM）推导得到的适宜性数值、格网平均海拔、积雪日数、平均气温，以及当前与历史气候条件下的适宜栖息地占比。