CAJ | 학술논문

本文基于未扰动土壤中7 Be的量和日降雨资料，估算了陕西省杨凌区天然放射性核素7 Be的沉降通量。结果显示，雨水中7Be的实测浓度和估算浓度之间无显著差异（P＞0.05），说明基于未扰动土壤中7 Be的量估算雨水中7 Be的浓度，进而估算7 Be的沉降通量是合理的。计算发现，7 Be沉降通量年内和年际均存在较大变异性，月沉降通量变异系数达0.97，夏季沉降通量大，冬季的小，年均沉降通量为2069 Bq/m2。未扰动土壤中7 Be的量及7 Be的沉降通量主要受降雨量及其时间分布的影响，不同时间尺度下7 Be沉降通量与相对应降雨量之间呈显著线性正相关。
본문기우미우동토양중7 Be적량화일강우자료，고산료합서성양릉구천연방사성핵소7 Be적침강통량。결과현시，우수중7Be적실측농도화고산농도지간무현저차이（P＞0.05），설명기우미우동토양중7 Be적량고산우수중7 Be적농도，진이고산7 Be적침강통량시합리적。계산발현，7 Be침강통량년내화년제균존재교대변이성，월침강통량변이계수체0.97，하계침강통량대，동계적소，년균침강통량위2069 Bq/m2。미우동토양중7 Be적량급7 Be적침강통량주요수강우량급기시간분포적영향，불동시간척도하7 Be침강통량여상대응강우량지간정현저선성정상관。
Based on 7 Be inventories in undisturbed soil and daily rainfall data ,7 Be depo-sition flux was estimated in Yangling District ,Shaanxi Province ,China .The results show that there is no significant difference between the measured 7Be mean concentra-tion and the estimated in rainfall ,w hich demonstrates that it is reasonable to use 7 Be inventories in undisturbed soil to estimate 7 Be mean concentration in rainfall and then calculate 7 Be deposition flux .Inter-and intra-annual variation of 7 Be deposition flux is significant difference at the study site .T he coefficient of variation for monthly 7 Be depo-sition flux is 0.97 .T here is a marked seasonality in the seasonal values of 7 Be deposition flux .Maximum value occurs in summer and minimum value occurs in winter .The annu-al 7Be deposition flux is 2 069 Bq/m2 .The variation of 7Be inventory in undisturbed soil and 7Be deposition flux were determined by the precipitation amount and its temporal distribution .The strong linear correlation between 7Be deposition flux and precipitation amount is evident at different time scales .