The role of an urban park's tree stand in shaping the enzymatic activity, glomalin content and physicochemical properties of soil

化学 尿素酶 腐殖质 土工试验 土壤碳 环境化学 酶分析 土壤有机质 营养物 土壤质量 格洛马林 生物利用度 土壤水分 生物 生态学 生物化学 遗传学 有机化学 共生 丛枝菌根 细菌 生物信息学
作者
Joanna Lemanowicz,Samir A. Haddad,Agata Bartkowiak,Robert Lamparski,Piotr Wojewódzki
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:741: 140446-140446 被引量:30
标识
DOI:10.1016/j.scitotenv.2020.140446
摘要

Soil enzymes play a key role in the circulation of nutrients and the functioning of the ecosystem. The aim of the study was to assess how the tree species of urban agglomerations affect soil quality and enzymatic activity (dehydrogenases DEH, catalase CAT, alkaline AlP and acid AcP phosphatase, protease PR, β-glucosidase GLU, and urease UR). To this end, soil samples were taken from beneath nine park trees. The risk of soil contamination by selected heavy metals (Pb, Ni, Cd) was also investigated against the background of the selected physicochemical properties. Enzyme activity results were used to calculate multi-parametric indices of soil quality: availability factor (AF), enzymatic pH indicator (AlP/AcP), biological index of fertility (BIF), geometric mean (GMea), alternation index (Al3), biochemical soil activity (BA16 and BA17). The results showed statistically significant differences in physicochemical and enzymatic properties of soil depending on tree species. Correlation analysis showed that the content of total organic carbon (TOC), total nirogen (TN), total phosphorus (TP) and humus (OM) in soil significantly influenced the activity of the studied enzymes and glomalin content. AF coefficient values (1.84%–18.19%) suggest that the bioavailability of available phosphorus (AP) was sufficient. The Pb, Ni, Cd content results were found to be low and did not exceed the permissible concentrations. DEH, CAT and AlP activity were highest under common hawthorn, and AcP, GLU and PR under northern white cedar. The calculated enzymatic indicators proved to be a sensitive and accurate indicator of the dynamics of changes taking place in the city park soil. Based on the results, an attempt can be made to assess the planning of sustainable development of studied areas of urban parks.
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