Quantification of soil element changes in long-term agriculture: A case study in Northeast China

文献类型： 外文期刊

第一作者： Zhang, Tianpeng

作者： Zhang, Tianpeng;Lei, Qiuliang;Xu, Yongbing;Liu, Hongbin;Sun, Fujun;Jiang, Zhuodong;Luo, Jiafa;Lindsey, Stuart

作者机构：

关键词： Cropland soil; Anthropogenic activities; Portable X-ray fluorescence spectroscopy (pXRF); Soil profile; Data visualization

期刊名称：CATENA （ 影响因子：6.367； 五年影响因子：6.497 ）

ISSN： 0341-8162

年卷期： 2022 年 208 卷

页码：

收录情况： SCI

摘要： Anthropogenic measures that are implemented to improve the nutrient status of soil for growing food can lead to soil and environmental contamination. The influence of agricultural measures (cultivation and fertilization) on a cropland soil can be explained and quantified by exploring the variety and distribution of elements (calcium iron, rubidium, titanium, etc) in the soil profile. In this study, a cropland soil subjected to long-term (1948-2019, 72 years) anthropogenic agricultural activity was compared with a natural, undisturbed forest soil. Results showed that the anthropogenic activity affected the correlation of different elements in the cropland soil to different degrees, with the degree of the effects ranked as follows: calcium (Ca) > iron (Fe) = rubidium (Rb) > titanium (Ti) = chromium (Cr) > potassium (K) = zirconium (Zr) = strontium (Sr) > sulfur (S) = nickel (Ni) = scandium (Sc) > manganese (Mn) > vanadium (V) = zinc (Zn) = tungsten (W) > copper (Cu) = lead (Pb) = cobalt (Co). The elements were distributed much more evenly throughout the profile of the natural forest soil than the disturbed cropland soil. Some elements, such as Fe, Ti, V, Pb, Cr, Rb, K, Ca, Mn, Sc, Sr, and Cu, can be absorbed by vegetable growth and participate in the plant physiological cycle, while others, such as K, Rb, Cr, and Ti, may be lost readily as the soil is tilled. Elements such as Pb, Sc, Zn, and Sr, gradually accumulate over time from continuous fertilizer applications. In order to maintain the health of cropland soils, both farmers and policy makers should strive to mitigate elemental pollution by carefully managing applications of micronutrient fertilizers.

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