湖泊科学2000，Vol.12Issue(4)：291-296,6.
若尔盖盆地兴措湖沉积记录揭示的近代气候与环境
Modern Climatic Signals Recorded in Xincuo Lake Sediments in Zoige Basin, Eastern Tibetan Plateau, China
摘要
Abstract
Climatic proxy of stable carbon isotope, together with total organic carbon content, in organic matter in lake sediment is one of the most effective methods to reconstruct past climatic evolutionary sequences. By coupling the indexes ofTOC and δ13Corg in Xingcuo lake sediments and instrumental meteorological data in Zoige Basin, Eastern Tibetan Plateau and by building relative function relations among them, we probed quantitatively modern climatic signals recorded in those indexes. The results showed that there were remarkable relations between contents of TOC and precipitation, δ13Corg and air temperature, of which coefficence reaches to -0.67 and -0.75,respectively. Besides, we also demonstrated that average variation between contents of TOC and precipitation(dTC/dP)is -0.046 %· mm -1 and -0.84%·℃ -1 for δ13Corg and air temperature(dδC/dT). According to the above, relative function relations among them were built.关键词
兴措湖若尔盖盆地有机碳同位素近代气候环境Key words
Xingcuo Lake,δ13C in organic, modern climate, Zoige Basin分类
天文与地球科学引用本文复制引用
吴敬禄,李世杰,王苏民,夏威岚,李万春,羊向东..若尔盖盆地兴措湖沉积记录揭示的近代气候与环境[J].湖泊科学,2000,12(4):291-296,6.基金项目
国家自然科学基金(49803001)、国家重点基础研究发展规划项目共同资助(G1998040800 （49803001）
KZ951-A1-204 （）
KZ95T-06) （）
