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为探究玉龙雪山地区地-气-水-人之间的相互作用机理,于2005年7月22-28日在云南省丽江市玉龙雪山地区采集不同水体样品,在探讨不同水体水文联系的基础上,对该区域不同水体的无机离子浓度和特征进行了分析。结果表明玉龙雪山地区不同水体无机离子浓度存在较为明显的差距,无机离子浓度较大的是低海拔地区的湖水和地下水,浓度较小的是冰舌融水和融水径流;水体主要无机离子是HCO3-,Ca2+,Mg2+,SO42-,Na+,K+,Cl-,其中Ca2+占整个阳离子的53.27%,是最大优势阳离子,阴离子中HCO3-是优势阴离子,占阴离子总量的70.35%左右,优势离子与非优势离子之间浓度差距较大。海拔4270 m以上,受局地岩石岩性的影响无机离子浓度较高;海拔4270~3180 m,由于新鲜融水未充分溶解基岩的离子和水体本身的沉积作用,离子浓度较低;海拔3046~2400 m,水岩作用导致水体HCO3-,Mg2+,Ca2+,K+,Na+浓度较高,季风输送和近源人类活动导致NO3-、SO42-,K+浓度也较高;相关性分析表明阳离子的来源、存在方式和反应机理的相似性比阴离子强;SO42-对区域水岩反应有较强的加速作用;Mg2+和Ca2+同源。
In order to explore the mechanism of ground-air-water-human interaction in Jade Dragon Snow Mountain region, different water samples were collected from July 22 to July 28, 2005 in Jade Dragon Snow Mountain, Lijiang City, Yunnan Province. Based on the discussion of the hydrological relationship among different water bodies , The concentration and characteristics of inorganic ions in different waters in this area were analyzed. The results show that there is a clear gap between the inorganic ion concentrations in different water bodies in Yulong Snow Mountain and the lake and groundwater in the lower elevations where the concentrations of inorganic ions are larger. HCO3-, Ca2 +, Mg2 +, SO42-, Na +, K +, Cl-. Among them, Ca2 + accounted for 53.27% of the total cation, which was the dominant cation. HCO3- was the dominant anion in the anion, accounting for 70.35% of the total anion. The difference in concentration between non-dominant ions is greater. Above 4270 m above sea level, the concentration of inorganic ions is high due to local rock lithology. At an elevation of 4270 to 3180 m, the ion concentration is low due to the sedimentation of ions and water body of the under-dissolved fresh bedrock; ~ 2400 m, the concentration of HCO3-, Mg2 +, Ca2 +, K +, Na + in water body was higher due to water-rock interaction, and concentrations of NO3-, SO42- and K + were also higher due to monsoon transport and human activities near the source. Correlation analysis indicated that the source of cation , The similarity of existence mode and reaction mechanism is stronger than that of anions; SO42- accelerates the regional water-rock reaction; Mg2 + and Ca2 + are homologous.