Supplementary file.xlsx

The concentrations of Cu, Ni, Pb, Zn, Cd, and Cr were analyzed from 87 topsoil samples in the pre-rainy season and 115 samples in the post-rainy season. The Cd concentration was determined through inductively coupled plasma mass spectrometry (ICP-MS, Baird ICP2070, USA). The concentrations of Cu, Ni, Pb, Zn, and Cr were determined using an inductively coupled plasma optical emission spectrometer (ICP-OES, Baird ICP2070, USA). The pollution index (PI) of heavy metals was calculated from the measured and background concentrations. The ecological risk index (RI) was assessed based on the PI values and toxic-response parameters.本研究针对雨季前采集的87个表层土壤样品以及雨季过后采集的115个表层土壤样品，对铜（Cu）、镍（Ni）、铅（Pb）、锌（Zn）、镉（Cd）与铬（Cr）的浓度开展了分析检测。其中镉（Cd）的浓度采用电感耦合等离子体质谱法（inductively coupled plasma mass spectrometry，ICP-MS，Baird ICP2070，美国）进行测定；铜（Cu）、镍（Ni）、铅（Pb）、锌（Zn）与铬（Cr）的浓度则通过电感耦合等离子体光学发射光谱仪（inductively coupled plasma optical emission spectrometer，ICP-OES，Baird ICP2070，美国）完成测定。本研究基于实测浓度与土壤背景浓度，计算得到各重金属的污染指数（Pollution Index，PI）；同时依据污染指数值与毒性响应参数，对生态风险指数（Ecological Risk Index，RI）进行了评估。