Geochemical differentiation of soils has a series of consequences on plant and places pressure on the ecological environment.The quantitative evaluation of element migration in the Earth's critical zone is a challenging task.In this study,two demonstration study areas of Scutellaria baicalensis Georgi were selected,and multiple chemical weathering indexes,chemical loss fraction,mass migration coefficients and biological enrichment coefficient method were used to assess the ecological and geochemical suitability.The results show that for the element of Fe,Zn,Se,Cu,Co,Ni,Mo and Ge,the degree of weathering and soil maturation,were greater in the rhyolitic tuff area than in the Plagioclase gneiss area.In both research sites,the heavy metal level of samples in Scutellaria baicalensis Georgi did not exceed the standard limits.The plagioclase gneiss region's surface soil environment was more alkaline,and the content of soil organic matter was lower,resulting in a higher bioenrichment intensity of Ge,Co,Cu,and Se elements in Scutellaria baicalensis Georgi than in the rhyolite-tuff area.The elements of Cd,Nb,Mo,Pb and As are considerably enriched in the soil of the plagioclase gneiss area but lost by leaching in the soil of the rhyolite tuff area,which is connected to the interplay of elemental abundance and human impact in the parent materials.This study provides a good example of how to assess growth suitability of Chinese medicinal materials in the Earth's critical zone.

LI Xia;WEI Xiao-feng;WU Jin;YIN Zhi-qiang;WAN Li-qin;SUN Hou-yun;AN Yong-long

College of Water Sciences,Beijing Normal University,Beijing 100875,China;China Institute of Geo-Environment Monitoring,Beijing 100081,China;Beijing Institute of Geology for Mineral Resources,Beijing 100012,China;Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China;School of Water Resources&Environment,China University of Geosciences,Beijing 100083,China

山地科学学报（英文版）

[1]LI Xia;WEI Xiao-feng;WU Jin;YIN Zhi-qiang;WAN Li-qin;SUN Hou-yun;AN Yong-long-.Geochemical characteristics and growth suitability assessment of Scutellaria baicalensis Georgi in the Earth's critical zone of North China)[J].山地科学学报（英文版）,2022(05):1245-1262

rhyolitic,Plagioclase,bioenrichment

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