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在系统收集整理中国北方六大典型盆地降水与地下水氢氧同位素资料基础上,依据同位素形成演化相似性原理,对比分析同位素组成及其关系方程得出:受大陆效应的影响,从东部河北平原到西部塔里木盆地其大气降水方程的斜率和截距大多逐渐增大;河北平原等六大盆地平原浅层地下水的蒸发强度逐渐增大;与全球大气降水方程(δD=8.2δ18O+10.8)相比,六大盆地平原的大气降水方程斜率、截距均偏小或斜率偏小,反映出这几大盆地和平原为干旱、半干旱地区降水量小、蒸发强的特点。
Based on the data of hydrogen and oxygen isotopes of precipitation and groundwater collected from six typical northern basins in China, based on the similarity principle of isotope formation and evolution, the isotopic compositions and their relational equations are compared and analyzed. From the influence of the continental influence, The slopes and intercepts of the atmospheric precipitation equation in the western Tarim Basin are mostly gradually increasing. The evaporation intensities of shallow groundwater in the six major plain areas such as the Hebei Plain are gradually increasing. Compared with the global precipitation equation (δD = 8.2δ18O + 10.8) The slopes, intercepts and slopes of the atmospheric precipitation equations in the six major plain basins are both small and small, reflecting that these basins and plains are characterized by small precipitation and strong evaporation in arid and semi-arid areas.