Element migration and enrichment characteristics of bedrock–regolith–soil–plant continuum system in

• 作者: Xiaofeng Wei Houyun Sun Zirang Chen Xia Li Hao Wei Wenru Jia Wei Li
• 来源期刊: 地球化学学报(英文）
• 学科: 地球科学
• 关键词: Critical zone Eco-geochemistry Element migration Chestnut Chengde
• 年，卷（期）: 2023,（5）
• 页码范围: 839-860
• 页数: 21页
• 语种: 英文
• DOI: 10.1007/s11631-022-00544-z

摘要

In order to probe the geochemical relationship between the quality of economic crops and ecological geochemistry, this project studies the chestnut production area of Chengde City, Hebei Province, China. The chemical weathering index, chemical depletion fraction CDF, mass transfer coefficient, and bioconcentration coefficient were used to quantify the characteristics of element migration and accumulation in the BRSPC (Bedrock–Regolith–Soil–Plant Continuum system) system of gneiss formation area and dolomite formation area. The results show that the soil CaO, SiO2, Al2O3, and Na2O elements in the gneiss construction area are abundant, and the B, Ge, S, and Mo elements are relatively lacking; the soil B, Mo and Ge elements in the dolomite construction area are abundant, and the SiO2, Al2O3, and Na2O elements are slightly lower; The weathering intensity of gneiss is low-medium, with the relatively high mobility and apparent transformation of Se, B, V, S, Mn, and Mo. The weathering intensity of dolostone is low, with the relatively high mobility and apparent transformation of Na2O, P, and Ni. Chestnut is rich in Cu, Ni, Se, and Ge, walnut has a high content of Mo, and hawthorn is rich in Se and B. The contents of Mn in chestnut are 1–2 times higher in walnut and hawthorn. It lays the theoretical foundation for the industry optimization of special industrial crop planting in Chengde according to our research.