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Details

Autor(en) / Beteiligte
Titel
Hydrological characteristics and available water storage of typical karst soil in SW China under different soil–rock structures
Ist Teil von
  • Geoderma, 2023-10, Vol.438, p.116633, Article 116633
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
2023
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • •Soil hydrology is influenced by soil types in karst areas.•Human activities are the key factors that change soil hydrology.•Soil hydrology of karst slope is affected by lithology.•The actual amount of soil available water is controlled by bare rock in karst slope. Soil hydrological characteristics are influenced by factors such as parent rock weathering, human activities, and soil texture. However, the influence of the complex soil–rock structures and heterogeneous soil types on soil hydrological characteristics resulting from the weathering of carbonate rocks into soils on slopes in the karst region of SW China is not fully understood. The relationships between zonal and nonzonal soil hydrological characteristic differences, land uses, and soil–rock structures were analyzed using a typical watershed in the SW China karst region. In this study, (1) the difference between zonal and nonzonal soil hydrological characteristics is significant. For infiltration capacity (Ks), yellow soil (19.50 ∼ 1058.00 cm·d-1) < limestone soil (34.50 ∼ 2364.00 cm·d-1), while for soil available water storage, limestone soil on the dolomitic slope (43.26 mm) > yellow soil (20.16 ∼ 35.25 mm) > limestone soil on the limestone slope (17.73 ∼ 34.72 mm). (2) Land-use practices and soil–rock structures have long affected the hydrological characteristics of soil in karst. (3) The bare bedrock on carbonate slopes leads to a reduction in the total amount of soil per unit area on the slope, which compresses the space for vegetation growth and reduces the total amount of water provided by the soil for vegetation growth per unit area, which confirms one of the reasons for the low plant biomass in karst. These results suggest that the utilization of soil water in karst areas should consider the weights of soil type, lithology, and soil–rock structures.
Sprache
Englisch
Identifikatoren
ISSN: 0016-7061
eISSN: 1872-6259
DOI: 10.1016/j.geoderma.2023.116633
Titel-ID: cdi_doaj_primary_oai_doaj_org_article_cb322c993b9543a4b18c5f1f721ae38b

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