Geochemical characteristics of soil nutrient elements in cultivated land within a typical agricultural area, Liaocheng City, China
ZHANG Wen-Qiang1,2(), LI Chang-Suo1,2, LIU Jin-Xin1,2,3, CHENG Shi-Yue1,2,3, TENG Yue1,2, LI Gen-Lin1,2,3()
1. Shandong Provincial Geo-mineral Engineering Exploration Institute (No. 801 Hydrogeology and Engineering Geology Institute, Shandong Exploration Bureau of Geology and Mineral Resources), Ji'nan 250014, China 2. Shandong Engineering Research Center for Environmental Protection and Remediation on Groundwater, Ji'nan 250014, China 3. Shandong Hydrogeology Engineering Geology and Environment Geology Corporation, Ji'nan 250014, China
Assessing the abundance and deficiency of soil nutrient elements holds critical referential significance for guiding agricultural production, improving the planting structure, and implementing location-specific scientific fertilization. This study investigated Tangyi Town, a typical agricultural area in Liaocheng City. First, this study tested 15 nutrient indicators in 84 topsoil samples from representative cultivated land. Second, using the geographic information system (GIS) and geostatistical analysis, this study revealed the spatial distribution patterns of various geochemical elements. Third, this study conducted single-indicator and comprehensive assessments of soil nutrient geochemistry. The results show that the soils from cultivated land in Tangyi Town exhibited relatively abundant to abundant P and CaO contents, and moderate to relatively abundant K2O content. Their S content displayed overall relatively abundant to a higher level and a non-uniform distribution, with local excess observed. Additionally, they manifested relatively deficient N and organic matter contents and generally moderate trace element content. This study identified a Se-rich soil area of approximately 2.98 km2, representing about 4.76% of the total cultivated land area, with Se content ranging from 0.49×10-6 to 2.03×10-6. The comprehensive geochemical grades of soil nutrients in the study area are predominantly of grades Ⅱ (relatively abundant) and Ⅲ (moderate), covering areas of 54.11% and 40.47%, respectively, indicating favorable conditions for agricultural production. This study ascertained the soil nutrient status of cultivated land in the study area and identified Se-rich land resources, providing fundamental geochemical data for guiding the development and utilization of land resources and developing distinctive agriculture.
张文强, 李常锁, 刘金鑫, 程诗悦, 滕跃, 李根林. 聊城市典型农业区耕地土壤养分元素地球化学特征[J]. 物探与化探, 2025, 49(5): 1232-1242.
ZHANG Wen-Qiang, LI Chang-Suo, LIU Jin-Xin, CHENG Shi-Yue, TENG Yue, LI Gen-Lin. Geochemical characteristics of soil nutrient elements in cultivated land within a typical agricultural area, Liaocheng City, China. Geophysical and Geochemical Exploration, 2025, 49(5): 1232-1242.
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doi: 10.13287/j.1001-9332.202312.016
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