CAJ | 학술논문

利用宁夏固原站2002年以来降水pH值和大气干沉降通量观测数据,分析了固原市区降水pH值和干沉降通量的时间、频率的分布特征及相关关系.结果表明,固原的降水呈弱碱性,存在的明显的月、季变化,冬春pH值高,达到7.40以上,夏秋逐渐降低,在7.00附近变化,呈现出单峰单谷值的变化趋势,且近年来呈上升趋势.大气干沉降通量在5月份存在极大值,12月份达到极小值.3～7月均为正距平,8～次年2月为负距平,呈明显的单峰谷型分布,自2004年以来,呈缓慢减少趋势.大气干沉降通量、降水月pH值与降水量三者之间存在一定的相关关系.
이용저하고원참2002년이래강수pH치화대기간침강통량관측수거,분석료고원시구강수pH치화간침강통량적시간、빈솔적분포특정급상관관계.결과표명,고원적강수정약감성,존재적명현적월、계변화,동춘pH치고,체도7.40이상,하추축점강저,재7.00부근변화,정현출단봉단곡치적변화추세,차근년래정상승추세.대기간침강통량재5월빈존재겁대치,12월빈체도겁소치.3～7월균위정거평,8～차년2월위부거평,정명현적단봉곡형분포,자2004년이래,정완만감소추세.대기간침강통량、강수월pH치여강수량삼자지간존재일정적상관관계.
Based on precipitation pH value and dry precipitation data of the Guyuan station since 2002 in Guyuan station of Ningxia, the temporal distribution and frequency characteristics and correlations of the precipitation pH value and dry precipitation in the Guyuan station were analyzed. The results showed that the precipitation of the Guyuan station was alkaline. There were apparent existences of monthly and seasonal variation which reached more than 7.40 in winter and spring, and gradually reduced in the vicinity of 7.00 in summer and fall. The seasonal variation showed a single peak-valley pattern while the annual precipitation pH value showed upward trend in recently years. Dry precipitation reached from maximum in May to minimum in December. From March to July it showed positive anomaly, from August to February it showed negative anomaly, which was a ovbious single peak and valley type distribution. There was a slow decreasing trend since 2004. Dry precipitation, precipitation and precipitation pH value had a certain correlation.