内蒙古草原经度地带性土壤地球化学特征研究.pdf

Advances in Geosciences 地球科学前沿, 2015, 5, 160-170 Published Online June 2015 in Hans. /journal/ag /10.12677/ag.2015.53020 Inner Mongolia Grassland Longitude Zonal Soil Geochemistry * Shuzhen Wei, Weihua Zhang Inner Mongolia Agricultural University, Hohhot Inner Mongolia * Email: 987717485@ th nd th Received: Jun. 8 , 2015; accepted: Jun. 22 , 2015; published: Jun. 29 , 2015 Copyright © 2015 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract On the Inner Mongolia’s vast territory, corresponding fractionation of soil geochemistry changes regularly with longitudinal zonality. This paper, based on the past soil survey, taking longitude zonal pattern for clues, processes on soil geochemistry data collation and studies various data indexes’ longitude zonal variation, which has great significance for theoretical research in Inner Mongolia soil. The results showed that, mainly due to climatic factors, the Inner Mongolia grassland soils were distributed according to longitudinal zonality, and the corresponding soil geochemistry also showed longitude zonal arrangement: From east to west, the soil SiO2, Na, K, Ca, Mg and other salt and organ- ic matter content decreased, while CaCO3 content increased. From east to west, Sa, Saf, ba, β, μ, basi- cally showed a gradual increasing trend; powder stick ratio, CEC, H/F, organic/CaCO3 is showing a decreasing trend. From east to west, Inner Mongolia grassland soil leaching intensity gradually weakened, both chemic