盐爪爪属5种植物的潜在分布及其适生性分析

本研究基于盐爪爪属(Kalidium)?5种植物共503个地理分布点和29个环境变量,运用ArcGIS和最大熵模型(MaxEnt),分析了其在基准和未来时段不同气候情景下的潜在适生区、驱动因子及其生态位参数,并利用土地利用数据与基准时段下盐爪爪属5种植物的高适生区进行叠加分析.结果表明:1)盐爪爪属5种植物适生区分布的...

Analysis of the potential distribution and suitability of five Kalidium species

Using a total of 503 geographical distribution points and 29 environmental variables, this study employed ArcGIS and the maximum entropy model (MaxEnt) to analyze the potential adaptability areas, driving factors, and niche parameters for five Kalidium species under different climate scenarios in baseline and future periods, and overlaid land use data with the highly suitable areas of the five Kalidium species under the baseline climate scenario. The results showed that: 1) the main factors driving the distribution of areas suitable for the five Kalidium species were different, but climate factors were dominant for them all, and topography and soil affected the distribution of suitable areas. 2) compared with the baseline climate scenario, only the middle- and high-suitability areas for Kalidium caspicum had shrunk in the 2050 period under the RCP8.5 climate scenario, whereas the middle and high fitness areas for the five species in the other time periods under different climate scenarios exhibited different degrees of expansion. 3) the niche parameters of the main factors driving the five species and the high fitness area were different. 4) part of the land was developed and utilized in the high-suitability areas of the five species under the baseline climate scenario. This study has a certain theoretical significance and reference value for the management, protection, and utilization of the distribution area for Kalidium species.