Article Instance

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{
    "pk": 62356,
    "title": "Urban Soils of Washington, D.C.",
    "subtitle": null,
    "abstract": "Urban soils, heavily influenced and disturbed by human activities such as earth moving, compaction, and filling, exhibit unique physical and chemical properties distinct from natural soils. This study characterizes the urban soils of Washington, D.C., focusing on soils in the National Capital Region's parks, especially the Mall area. These soils are primarily formed from fill material, containing artifacts such as concrete, brick, and glass, resulting in lithologic discontinuities that impede water movement and cause poor drainage. Physical properties show increased bulk density and reduced pore space, leading to compacted soils that stress plant growth by limiting root penetration, water, and nutrient uptake. Chemically, urban soils tend to have higher pH and base saturation due to lime-bearing debris and often elevated heavy metal contents from urban pollution, though not at levels limiting plant use. Organic matter content is generally low, reducing soil fertility and structural stability. Soil classification includes urbic and spolic subgroups indicative of heavy human influence. Management efforts in the National Capital Region include aeration, organic amendments, and visitor access control to mitigate compaction and improve soil conditions. The study emphasizes the need for intensive sampling and further research into soil crust formation and remediation techniques for urban soils to support effective park management and plant health.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [],
    "section": "Article",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/55h6d8vw",
    "frozenauthors": [
        {
            "first_name": "John",
            "middle_name": "R.",
            "last_name": "Short",
            "name_suffix": "",
            "institution": "",
            "department": ""
        },
        {
            "first_name": "James",
            "middle_name": "C.",
            "last_name": "Patterson",
            "name_suffix": "",
            "institution": "",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "1984-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/gwf/article/62356/galley/48193/download/"
        }
    ]
}