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- W2393577079 abstract "The δ13CDIC values of karst groundwater are mainly constrained by the soil carbon pool and its δ13C.We selected two regions which are completely different in climatic conditions,Guilin of Guangxi in southern China and Fenyang of Shanxi Province in northern China,as the contrast objects for our study.Through analyzing the δ13CDIC values of kart groundwater in the two regions,it was found that:(a) the δ13CDIC values of karst groundwater are within the range of-7.53‰~-12.25‰,with a mean value of-9.84‰ in Fenyang,and those of karst spring are within the range of-9.22‰~-15.99‰,with a mean value of-13.06‰ in Guilin;(b) the karst groundwater in northern China is 3.22‰ times heavier than that in southern China.Combining the climatic and environmental conditions in the two regions,we revealed that the northern warm temperate arid and semi-arid continental monsoonal climate is characterized by more development of C4 vegetation,lower C3/C4 ratios and heavier δ13C of soil organic carbon pool.On the contrary,the southern subtropical humid monsoon region is characterized by less development of C4 vegetation,higher C3/C4 ratios and light δ13C of soil organic carbon pool.Therefore,different ecological conditions caused by the climate are the reason which caused different δ13CDIC values of water between southern China and northern China.The study provides a theoretical basis for our study on the response of groundwater to climate changing with isotope methods." @default.
- W2393577079 created "2016-06-24" @default.
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- W2393577079 date "2012-01-01" @default.
- W2393577079 modified "2023-09-23" @default.
- W2393577079 title "The δ~(13)C_(DIC) Characteristics of Groundwater in Different Karst Environmental Conditions" @default.
- W2393577079 hasPublicationYear "2012" @default.
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