Landscape aggregation statistics of global dry and wet pattern based on standard precipitation index

Based on different SPI thresholds, we design a patch-mosaic model to descripe the changes in spatial structure of global dry/wet patterns.本研究基于不同的标准化降水指数（SPI）阈值，设计了斑块镶嵌模型，以刻画全球干湿格局的空间结构变化。