CAJ | 학술논문

选择位于西风环流显著影响的新疆巴里坤湖作为研究对象，结合对位于湖心部位的人工开挖剖面的多指标（包括有机碳同位素（δ13C）、有机质含量（OM）和碳氮比（C/N））的对比分析和验证，发现该湖泊沉积物的δ15N记录较好地响应了过去9400年以来气候环境的变化，依据其波动变化特征划分出以下阶段：9400～7300 cal．a BP期间，气候状况较为干旱且不稳定；7300～5900 cal．a BP期间，气候相对湿润；5900～3100 cal．a BP期间，气候环境由湿转干；3100～1100 cal．a BP期间，气候特征由相对湿润转向干旱；但在1100～0 cal．a BP期间偏高的δ15 N值，可能受到了人类活动的影响．本研究表明，巴里坤湖沉积物δ15 N记录对于恢复研究区全新世气候与环境变化的特征与历史等方面具有较好的应用潜力和前景．
선택위우서풍배류현저영향적신강파리곤호작위연구대상，결합대위우호심부위적인공개알부면적다지표（포괄유궤탄동위소（δ13C）、유궤질함량（OM）화탄담비（C/N））적대비분석화험증，발현해호박침적물적δ15N기록교호지향응료과거9400년이래기후배경적변화，의거기파동변화특정화분출이하계단：9400～7300 cal．a BP기간，기후상황교위간한차불은정；7300～5900 cal．a BP기간，기후상대습윤；5900～3100 cal．a BP기간，기후배경유습전간；3100～1100 cal．a BP기간，기후특정유상대습윤전향간한；단재1100～0 cal．a BP기간편고적δ15 N치，가능수도료인류활동적영향．본연구표명，파리곤호침적물δ15 N기록대우회복연구구전신세기후여배경변화적특정여역사등방면구유교호적응용잠력화전경．
The significance of climatic implication of the sediments nitrogen isotopes from Balikun Lake , which is located in typically westerly-influenced northeastern Xinjiang , is studied in this paper .Values of δ15 N values of a 250 cm-deep section which is located at the center of the lake , fluctuate from 6.0‰to 22.9‰with an average val-ue of 12.0‰.Supported by multi-proxy records including bulk organic carbon isotopes (δ13 Corg ), organic matter content ( OM) , and the ratio of TOC and total nitrogen ( C/N) , higherδ15 N values could reflect relatively wet con-ditions, whereas lower δ15 N suggests relatively dry conditions is inferred .Based on the δ15 N record, five climatic periods in the past 9 400 years could be identified , i.e., relatively dry conditions from 9 400 cal.a BP to 7 300 cal.a BP;relatively wet conditions between 7 300 cal.a BP and 5 900 cal.a BP;relatively dry period between 5 900 cal.a BP and 3 100 cal.a BP;a wetter period from 3 100 cal.a BP to 1 100 cal.a BP, and after 1 100 cal.a BP, strengthened human activity may exert strong influence on nitrogen isotopes .The results indicate that the nitrogen isotopes bear valuable potential to indicate past climatic changes in the westerly -influenced arid Xin-jiang, NW China.