Comprehensive Response Study of Climate and Hydrological System in Southwest Karst Region Under Global Climate Change——A Case Study of Guizhou Province
Taking Guizhou as an example,this study analyzed the response of factors such as annual average temperature,precipitation,humid-ity,sunshine duration,surface water resources,groundwater resources and river sediment transport to climate change from 1978 to 2021,and constructed a comprehensive climate change evaluation index for comprehensive response evaluation.The results showed that there was a signif-icant correlation between global climate warming and temperature changes in Guizhou,while the correlation with changes in annual average rel-ative humidity,surface water resources,groundwater resources and river sediment transport was relatively weak.With global warming,the tem-perature in Guizhou showed a fluctuating increasing trend,and precipitation also showed an increasing trend. However,the annual sunshine hours,relative humidity,surface water resources,groundwater resources and river sediment transport in Guizhou Province showed a decreasing trend.The overall response showed an increasing trend.The overall variation amplitude of various elements in the climate and hydrological sys-tem of Guizhou was relatively small.During the research period,temperature,precipitation,relative humidity and river sediment transport were all negatively skewed,indicating that years with higher than average rainfall had a greater chance of occurrence than years with lower than aver-age rainfall;the distribution of surface water resources,groundwater resources and sunshine duration was positively skewed,indicating that years with more than average water resources had fewer opportunities to appear than years with less than average water resources.
Climate and hydrological systemOverall responseClimate changeSouthwest Karst RegionGuizhou Province
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