The Sanshui Transformation Mechanism Analysis Of Luanhe River Basin Of Lightning River Based On Environmental Isotope Precipitation Groundwater And Surface Water

Water is the main factors of the construction of the vegetation restoration. To restore and rebuild HunShanDaKe sand green ecological environment in Inner Mongolia, using environmental isotope technology and basing on sampling and measuring hydrogen and oxygen stable isotope of surface water, groundwater. precipitation samples in the south edge of HunShanDaKe sand named lightning River, the supply relationship between precipitation groundwater and surface water has been gotten. The results give some academic evidence for the further understanding of the local hydrological cycle of water environment and the rational utilization of water resources. By measuring the value of hydrogen and oxygen stable isotopes in the precipitation water, groundwater and surface water samples and combining with the local meteorological data, comparing with the global meteoric water line, analyzing how the change of the local season and climate working on the environment isotope., this paper mainly embodied in the following respects:(1) To compare the equation of local meteoric water line, global meteoric water line and western precipitation line, it is showed that the atmospheric precipitation was affected by the distilling in the process of landing. Water vapor came from the different ratio of source area. With the change of environment temperature, the frequency and quantity of rainfall increased, the deuterium surplus became higher at first then decreased. The content of δD、δ18O in atmospheric precipitation is positively correlation with temperature. The correlation is higher in summer, while lower in winter.(2) In addition to surface water isotope content under the influence of meteorological factors, also related to the change of the landform, geological structure. The highest temperature in July, the water content of delta D,18 o delta heaviest.(3) In the time scale the content of groundwater isotope became enriched in summer compared to autumn. In the aspect of spatial analysis the content of δD、δ18O was affected mostly by the groundwater depth. Due to the phreatic water was affected by the distillation, the shallower of the groundwater.the higher of the δD、δ18O content. while it had a deeper groundwater depth, the lower of of the δD、δ18O content.(4) Analyzing the content of δD、δ18O in the cross-sectional of the river,it showed that the content in surface water is higher than the groundwater. The range in spring is small, while it enriched in summer. Due to the residual effects of the summer precipitation, the range of the average value in the river is small too. There is a typical seasonal characteristic.(5) The surface water was supplied by precipitation and groundwater, while the replenishment ratio was influenced by season, the change of climate and this leaded to a different change. Basing on the change of the incremental between different section and calculating by the three components mix proportion, the tendency of how the supply ratio in the study area water changed has been given. In summer the ratio of the precipitation and the upper surface water is higher, while the groundwater is higher in spring and autumn.