河西走廊酒东沙地风沙沉积物理化特征及其环境意义

郭雪阳, 杨林海, 程良清, 胡光印, 胡菁菁

Physical and chemical characteristics of aeolian sands in Jiudong Sandy Land of Hexi Corridor and its environmental significance

Xueyang Guo, Linhai Yang, Liangqing Cheng, Guangyin Hu, Jingjing Hu

表3 酒东沙地表层风沙沉积物的化学风化程度

Table 3 Chemical weathering degree of the aeolian sand sediments on the surface of Jiudong Sandy Land

指数 JD-1-1 JD-1-2 JD-1-3 JD-2-1 JD-2-2 JD-2-3 Rb/Sr 0.42 0.38 0.42 0.28 0.38 0.30 淋溶系数 0.90 0.98 0.96 1.28 0.95 1.14 CIA 45.98 46.24 46.35 47.58 44.77 45.00 指数 JD-2-4 JD-3-1 JD-3-2 JD-3-3 JD-3-4 JD-3-5 Rb/Sr 0.27 0.40 0.29 0.34 0.36 0.44 淋溶系数 1.26 0.98 1.25 1.14 1.17 0.97 CIA 46.85 45.08 46.99 45.13 47.22 46.86