Geochemical evaluation of land quality in eastern Oroqen Qi, Inner Mongolia

LI Qiu-yan; HE Peng-fei; WEI Ming-hui; LIU Guo-dong; ZHANG Yi-he; HAN Xiao-meng

doi:10.13686/j.cnki.dzyzy.2025.02.010

2025 Vol. 34, No. 2

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Article navigation > Geology and Resources > 2025 > 34(2): 225-231

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LI Qiu-yan, HE Peng-fei, WEI Ming-hui, LIU Guo-dong, ZHANG Yi-he, HAN Xiao-meng. Geochemical evaluation of land quality in eastern Oroqen Qi, Inner Mongolia[J]. Geology and Resources, 2025, 34(2): 225-231. doi: 10.13686/j.cnki.dzyzy.2025.02.010

Citation:

LI Qiu-yan, HE Peng-fei, WEI Ming-hui, LIU Guo-dong, ZHANG Yi-he, HAN Xiao-meng. Geochemical evaluation of land quality in eastern Oroqen Qi, Inner Mongolia[J]. Geology and Resources, 2025, 34(2): 225-231. doi: 10.13686/j.cnki.dzyzy.2025.02.010

Geochemical evaluation of land quality in eastern Oroqen Qi, Inner Mongolia

1.
Shenyang Center of China Geological Survey, Shenyang 110034, China
2.
Key Laboratory of Black Soil Evolution and Ecological Effects, MNR, Shenyang 110034, China
3.
Key Laboratory of Black Soil Evolution and Ecological Effects of Liaoning Province, Shenyang 110034, China

More Information

Corresponding author: HE Peng-fei, 230570665@qq.com

Received Date: 05 January 2024

Revised Date: 19 January 2024

Publish Date: 25 April 2025

Abstract

Abstract

Based on the soil nutrient and environmental data obtained from the 1 ∶ 250 000 geochemical survey of land quality covering 3 000 km² in eastern Oroqen Qi, this study evaluates the soil nutrient abundance/deficiency and environmental quality in accordance with DZ/T 0295 "Specifications for Geochemical Evaluation of Land Quality" and GB15618 "Soil Environmental Quality Risk Control Standard for Soil Contamination of Agricultural Land (Trial)". The results show that soil nutrient in the study area is predominantly assigned as Grade Ⅰ (abundant) and Grade Ⅱ (relatively abundant), accounting for 75.1% and 24.4% of the total area respectively. No Grade Ⅳ (relatively deficient) or Grade Ⅴ(deficient) nutrient soils are identified yet, although B, Cu and Mg are deficient. The soil environmental quality is primarily classified as Grade Ⅰ (risk-free), covering over 97% of the area, with Zn, Hg and Pb concentrations maintaining risk-free grade throughout the region. The comprehensive geochemical land quality is mainly Grade Ⅰ (excellent), encompassing 2 920 km² or 97.34% of the total area. This study may provide geological data support for promoting high-quality agricultural economic development in Oroqen Qi.
- soil nutrient /
- soil environment /
- characteristic land /
- land evaluation /
- Oroqen Qi /
- Inner Mongolia

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References

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