| 词条 | Luvisol |
| 释义 |
|name = Luvisol |alternative_name = |type = |type_link = |image = ISRIC monolith NL-001.jpg |image_size = 250px |image_caption = Luvisol from the Netherlands |classification_system = WRB, other |profile = AhEBtC |parent_material = |code = LV |climate = Humid temperate climate }}Luvisols are a group of soils, comprising one of the 32 Reference Soil Groups in the international system of soil classification, the World Reference Base for Soil Resources (WRB).[1] They are widespread, especially in temperate climates, and are generally fertile.[1] Luvisols are widely used for agriculture.[2] DistributionLuvisols cover 500-600 million ha of land area, mainly in the temperate zones.[1] They form on a wide variety of mineral parent materials.[1] In Mediterranean regions, the formation of hematite can produce red-coloured Chromic Luvisols.[2] Description and formationThe main characteristic of Luvisols is an argic horizon, a subsurface zone with higher clay content than the material above it.[1] This typically arises as clay is washed downward by water and accumulates at greater depth. The clay minerals have not been extensively weathered and are therefore of the high-activity, 2:1 type, giving these soils high cation exchange capacities and high base saturation.[1][2] In uneroded landscapes, a lighter, clay-depleted eluvial horizon occurs above the argic horizon [2]. Luvisols in other classification systemsThe Canadian system of soil classification includes Luvisols. In the USDA Soil Taxonomy, Luvisols are typically classified as Alfisols.[2] Weblinks
References1. ^1 2 3 4 5 {{Cite book|url=http://www.fao.org/3/i3794en/I3794en.pdf|title=World Reference Base for Soil Resources 2014, Update 2015 | last=IUSS Working Group WRB | date=2015 | publisher = FAO | location = Rome | ISBN = 978-92-5-108369-7}} 2. ^1 2 3 4 {{cite book | title = Böden der Welt | year = 2014 | edition = 2nd | last1 = Zech | first1 = Wolfgang | last2 = Schad | first2 = Peter | last3 = Hintermeier-Erhard | first3 = Gerd | language = German | publisher = Springer Spektrum | location = Berlin}} 1 : Pedology |
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