干旱区地理2012，Vol.35Issue(1)：109-115,7.
罗布泊红柳沙包落叶阳离子含量及环境指示意义
Positive ion content in organic materials of Tamarix cones and its indication to environmental change in Lop Nur Region
摘要
Abstract
the fallen leaves in sedimentary veins of Tamarix cone and environmental change in Lop Nur region, the researched result has been obtained as follows ： the average positive ion contents of K ＋ , Na ＋ , Ca2 ＋ , and Mg2 ＋ are 3.70 mg/g, 40.33 mg/g,13.67 mg/g and 8.08 mg/g respectively,the order of their change range is Ca2＋ 〉 K＋ 〉 Mg2＋ 〉 Na＋ ; The inter-annual changes of the four kinds of metal element content are more obvious, and the variation trend is more consistent, the correlations between each metal element contents are positive correlations with correlation co- efficient of 0. 653 0 -0. 813 8; The correlation coefficients between the total positive ion content and the each one are 0. 814 4 -0. 959 9 ,the correlation coefficient between Na~ content and the total positive ion content is the high- est, which indicating that Na ~ content or the total positive ion content can reflect the change trends; there are better positive correlation between the content of positive ion and air temperature, and an inverse correlation between the content of positive ion content and annual precipitation and lake water surface area; with the underground water lev- el has been downing, the water quality of underground water has become worse, and the quality of soil water has be- come worse, the content of positive ion has increased; conversely with the underground water level has been going up, the water quality of underground water has become better, and the quality of soil water has become worse, the content of positive ion has decreased. The change of positive ion content in organic materials of Tamarix fallen leav- es has verified the reliability of the dating of sedimentary veins of Tamarix cone, and the feasibility of using sedi- mentary veins of Tamarix cone to reveal the environmental change in Lop Nur region关键词
罗布泊/红柳沙包/阳离子/环境Key words
Lop Nur/Tamarix cone/positive ion/environment分类
天文与地球科学引用本文复制引用
沈睿媛,李秀丽,夏训诚,赵元杰..罗布泊红柳沙包落叶阳离子含量及环境指示意义[J].干旱区地理,2012,35(1):109-115,7.基金项目
国家自然科学基金(31060089) （31060089）
"十一五"国家科技支撑计划课题(2006BAC01A03-2) （2006BAC01A03-2）
新疆重大科技专项课题(20073314-4-4) （20073314-4-4）
