Variation of main climatic elements and climate production potential in Hexi Corridor during 1960-2022
The Hexi Corridor is a key region for economic crop production in Gansu Province,and also an im-portant grain production base in China.In order to explore the spatio-temporal distribution characteristics of the main climatic elements and climate production potential in this region under the background of global climate change,and to clarify the patterns of change in climate production potential,this study utilized annual average temperature and precipitation data from 1960 to 2022,collected from 20 counties and districts in the Hexi Corri-dor.The climate production potential of the Hexi Corridor was estimated using the Miami model,Thornthwaite Memorial model,and Liebig's law of the minimum factor.The spatial-temporal variation characteristics of cli-mate elements and climate production potential were also analyzed.Furthermore,future climate changes and re-lated production potential in the Hexi Corridor were projected using CMIP6 model data,under Shared Socioeco-nomic Pathways(SSPs)including SSP1-2.6,SSP2-4.5,SSP3-7.0,and SSP5-8.5 scenarios.The results indicate that the average temperature in the Hexi Corridor has shown an overall increasing trend,while the average pre-cipitation has shown an overall decreasing trend over the past 63 years.Under the combined influence of precipi-tation,topography,and altitude differences,the temperature and potential evapotranspiration have shown an in-creasing trend,with the temperature potential exhibiting a spatial distribution pattern of gradually decreasing from north to south.However,the precipitation,and standard climate production potential have shown a decreas-ing trend,with low values concentrated in the northern desert area.Under the four projected scenarios,the cli-matic types in the southern high-altitude oasis zones and the northern near-desert regions respectively show trends towards"warm-wetting"and"warm-drying"developments.
annual average temperatureannual precipitationclimate potential productivityspatial-temporal characteristicsHexi Corridor
NETL
NSTL
万方数据
