夏尔希里地区土壤磁化率、重金属特征及相关性分析

The Soil Magnetic Susceptibility, Heavy Metal Characteristics and Correlation Analysis in the Xiaerxili

现今环境学研究的热点问题之一是探讨土壤地磁特征与重金属的耦合关系。为了探明夏尔希里地区土壤磁化率与重金属的特征,以及它们之间的相关性,本文选取夏尔希里地区的67个土壤剖面进行磁化率、重金属含量的测定,通过统计分析,研究表明:1低频磁化率的特征为:除了绿洲的土壤低频磁化率与土壤深度关系不明确外;山地和荒漠都是随土层深度的增加,低频磁化率值递减。此外,新疆土壤的频率磁化率值都较低。2山地土壤类型重金属元素含量排序为Mn>Zn>Pb>Cr>Cu>As>Ni>Co>Hg;绿洲土壤类型重金属元素含量排序为Mn>Zn>As>Cr>Pb>Cu>Ni>Co>Hg;荒漠土壤类型重金属元素含量排序为Mn>Zn>Cr>As>Pb>Cu>Ni>Co>Hg。3通过对夏尔希里地区土壤磁化率、重金属特征及相关性分析得出:研究区土壤类型不同土层中,山地低频磁化率与土壤深度的相关性显著,重金属之间相关性显著。上述分析可以对区域环境的治理及保护提供科学参考。

The coupling relationship between soil magnetic characteristics and heavy metal is one of the hot issues in the study of environmental science. In order to ascertain the soil magnetic susceptibility, heavy metal characteristics and their correlation, 67 soil profiles in the Xiaerxili area was selected to determine the magnetic susceptibility and heavy metal contents. The results showed that： 1） Low frequency magnetic susceptibility features： the relationship between the low frequency magnetic susceptibility and the soil depth of the oasis was uncertainly; while the low frequency magnetic susceptibility value was decreased both in mountainous region and desert with the increases of the soil depth. In addition, the soil frequency magnetic susceptibility values were low in Xinjiang. 2） The order of heavy metal elements contents in mountainous region was as follow： Mn〉Zn〉Pb〉 Cr〉Cu〉As〉Ni〉Co〉Hg; which in oasis was： Mn〉Zn〉As〉Cr〉Pb〉Cu〉Ni〉Co〉Hg; and in desert was： Mn〉Zn〉Cr〉 As〉Pb〉Cu〉 Ni〉Co〉Hg. 3）By the analysis of soil magnetization, characteristics of heavy metals and their correlation in the Xiaerxili area, it was concluded that： in different types of soils in the study area, low frequency magnetic susceptibility and soil depth was significantly correlated in mountainous region, and significant correlation among heavy metals. Through the above analysis, it could provide a scientific reference for the management and protection of the regional environment.