The capacity of ion adsorption and purification for coniferous forests is stronger than that of broad-leaved forests

• DOI: 10.1016/j.ecoenv.2021.112137
• Publication Date: 2021-03-18T06:43:24Z
• Authors: Chun Han; Cankun Zhang; Yongjing Liu; Yage Li; Tairan Zhou; Salman Khan; Ning Chen; Changming Zhao
• Keywords: Stemflow; Forest floor; Quercus variabilis; Soil acidification

In the past few decades, industrialization has caused a large number of pollutants to be released into atmosphere. Forest ecosystems play an important function in regulating biogeochemistry and circulation metal ions pollutants. affect absorption dissolution nutrients from atmosphere vegetation canopy, thereby influencing content composition forest floor leachate soil solution. This study examined changes acid anions (NO3−, SO42−, Cl−) cations (K+, Ca2+, Na2+, Mg2+, Fe3+, Pb2+, Cu2+, Cd2+) rainfall, throughfall, stemflow, for five different forests (Larix principis-rupprechtii, Picea wilsonii, crassifolia, Betula platyphylla Rhododendron communities). The results showed that enrichment capacity canopy coniferous (L. P. crassifolia) was stronger than broad-leaved (B. stemflow were 3.7–5.6 times 0–9.3 higher those forests, respectively. Corresponding values throughfall 1–1.4 0.3–2.4 times, contents NO3−, Cl−, K+, Cd2+ filtered layers are deepening gradually consistent decreasing trend all stands. addition, Pb2+ also concentrated topsoil, except Cu2+ Cd2+. Nevertheless, SO42− Na+ subsoil, whereas Ca2+ upper layers. Soil organic carbon (SOC) total nitrogen (TN) stands 20–37% 34–63% stands, shown OC TN strong correlation with partial litter, indicating had ion scavenging adsorption layer litter Therefore, L. crassifolia air pollutant pollution remediation capacities other two forests. Thus, we recommend planting tree species wilsonii eco-rehabilitation water purification improve ecological service ecosystems.