Buffalo National River

Location:Arkansas, United States
IUCN Category:V
Area:59,947 acres (24,260 hectares)
Species:All  Endangered  Invasive
Website:View website
Map:View Google Map
Climate:View Climate Data
Land Use:View Land Use Data

Ecoregions

Central U.S. hardwood forests
Ozark Mountain forests

Soils

Link to Map
Protected Area Boundary
 A
  
Share40 %20 %20 %20 %
Soil TypeOrthic AcrisolsOrthic LuvisolsLithosolsFerric Acrisols
Topsoil TextureMediumMediumMediumMedium
Reference Depth100 cm100 cm10 cm100 cm
DrainageModerately wellModerately wellImperfectlyModerately well
Available Water Capacity150 m150 m15 mm150 m
Topsoil Properties
Gravel10 %4 %26 %23 %
Sand49 %47 %43 %53 %
Silt27 %32 %34 %22 %
Clay24 %21 %23 %25 %
USDA TextureSandy clay loamLoamLoamSandy clay loam
Reference Bulk Density1.4 g/cm³1.41 g/cm³1.39 g/cm³1.4 g/cm³
Bulk Density1.4 g/cm³1.42 g/cm³1.3 g/cm³1.4 g/cm³
Organic Carbon1 %0.82 %1.4 %0.98 %
PH4.66.27.65.1
Clay Cation Exchange Capacity16 cmol kg⁻¹35 cmol kg⁻¹42 cmol kg⁻¹14 cmol kg⁻¹
Soil Cation Exchange Capacity7 cmol kg⁻¹11 cmol kg⁻¹15 cmol kg⁻¹6 cmol kg⁻¹
Base Saturation44 %88 %100 %49 %
Total Exchangeable Bases3.5 cmol kg⁻¹8.3 cmol kg⁻¹15.6 cmol kg⁻¹2.7 cmol kg⁻¹
Calcium Carbonate0 %0 %3.9 %0 %
Calcium Sulphate0 %0 %0 %0 %
Exchangeable Sodium1 %1 %4 %2 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel10 %5 % 19 %
Sand40 %40 % 41 %
Silt24 %29 % 20 %
Clay36 %31 % 39 %
USDA TextureClay loamClay loam Clay loam
Reference Bulk Density1.32 g/cm³1.34 g/cm³ 1.31 g/cm³
Bulk Density1.4 g/cm³1.5 g/cm³ 1.4 g/cm³
Organic Carbon0.42 %0.39 % 0.39 %
PH4.86.2 5
Clay Cation Exchange Capacity14 cmol kg⁻¹33 cmol kg⁻¹ 12 cmol kg⁻¹
Soil Cation Exchange Capacity6 cmol kg⁻¹12 cmol kg⁻¹ 6 cmol kg⁻¹
Base Saturation32 %87 % 33 %
Total Exchangeable Bases2.3 cmol kg⁻¹9.6 cmol kg⁻¹ 1.3 cmol kg⁻¹
Calcium Carbonate0 %0 % 0 %
Calcium Sulphate0 %0 % 0 %
Exchangeable Sodium2 %1 % 2 %
Electrical Conductivity0.1 dS m-10.1 dS m-1 0.1 dS m-1
Soil data provided by FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.