Sediment and soil quality at Ashfield Flats Reserve, Western Australia

Elemental (including Al, As, B, Ba, Be, Ca, Cd, Ce, Co, Cr, Cu, Fe, Ga, Gd, Ge, K, La, Mg, Mn, Mo, Na, Nb, Nd, Ni, P, Pb, S, Sc, Si, Sr, Th, Ti, V, Y, Zn, Zr) concentrations, pH, electrical conductivity, microplastics, Longitude-Latitude and UTM Zone 50 coordinates, sample material type, sampling strata, and sample identification codes for 231 samples of sediment or soil collected in 2019, 2020, and 2021 from Ashfield Flats Reserve, an urban nature reserve in Western Australia.
Ashfield Flats Reserve (approx. 40 ha) is listed as a Western Australian Bush Forever Site (No. 214) and fringes the Swan-Canning Estuary. It is also listed in the Directory of Important Wetlands in Australia and contained a threatened ecological community of temperate saltmarsh plant species. It is the largest remaining salt marsh in the Swan-Canning Estuary, but is impacted by altered hydrology, several stormwater drains, and poor water quality from historical groundwater contamination.
Sampling and analysis was conducted to assess the severity and extent of contamination of sediments and soils with trace elements, nutrients, and microplastics. In particular it was of interest whether stormwater drains which cross the reserve were contributing contaminants to adjacent wetlands.

2019年、2020年及2021年从西澳大利亚州城市自然保护区阿什菲尔德平原保护区（Ashfield Flats Reserve）采集的231份沉积物或土壤样本的元素（包括Al、As、B、Ba、Be、Ca、Cd、Ce、Co、Cr、Cu、Fe、Ga、Gd、Ge、K、La、Mg、Mn、Mo、Na、Nb、Nd、Ni、P、Pb、S、Sc、Si、Sr、Th、Ti、V、Y、Zn、Zr）浓度、pH值、电导率、微塑料含量、经纬度与UTM 50区坐标、样本材料类型、采样层位及样本识别码。
阿什菲尔德平原保护区（面积约40公顷）被列为西澳大利亚州“永久灌木地”（Bush Forever）站点（编号214），毗邻天鹅-坎宁河口（Swan-Canning Estuary）。该保护区亦被收录于《澳大利亚重要湿地目录》（Directory of Important Wetlands in Australia），并包含一个受威胁的温带盐沼植物物种生态群落。它是天鹅-坎宁河口现存最大的盐沼，但受到水文条件改变、多条雨水排放渠及历史地下水污染导致的水质恶化等因素的影响。
开展采样与分析工作旨在评估沉积物和土壤中微量元素、营养物质及微塑料污染的严重程度与范围。尤其关注穿越该保护区的雨水排放渠是否向邻近湿地输入污染物。