宁夏固原地区土壤地球化学背景值分析

doi:10.19388/j.zgdzdc.2023.01.08

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Abstract The soil background value reflects the background value of element index content under the influence of natural environment and human activities in a certain area. Based on 2 638 soil samples obtained from the 1∶250 000 geochemical survey of land quality in Guyuan of Ningxia, the authors in this paper obtained geochemical background values and characteristic parameters of 53 element indexes, by using the methods of iterative elimination and statistical analysis. Compared with the national soil abundance, the contents of Cd and S are significantly higher than the national topsoil abundance value, and they are within the safety limit. The difference of element index content under geomorphic types is not only affected by external natural conditions such as soil forming parent material and soil forming environment, but also reflects the disturbance of human activities to the soil environment, which provides reliable data for the sustainable development and rational utilization of agriculture.

Key words： land quality geochemistry background values

Received: 17 February 2022

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	ZUO Jianyang
	FANG Lu
	LIU Xiaohui

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ZUO Jianyang,FANG Lu,LIU Xiaohui. Analysis of soil geochemical background value in Guyuan area of Ningxia[J]. , 2023, 10(1): 76-82.

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http://journal25.magtechjournal.com/Jwk_dzdc/EN/10.19388/j.zgdzdc.2023.01.08 OR http://journal25.magtechjournal.com/Jwk_dzdc/EN/Y2023/V10/I1/76

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