Petrified Forest National Park

Location:Arizona, United States
IUCN Category:II
Area:44,522 acres (18,017 hectares)
Species:All  Endangered  Invasive
Website:View website
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:BSk (Climate: arid; Precipitation: steppe; Temperature: cold arid)

Ecoregions

Colorado Plateau shrublands

Soils

Protected Area Boundary
 AB
   
Share60 %30 %10 %50 %30 %10 %10 %
Soil TypeHaplic YermosolsCalcaric RegosolsCalcic YermosolsLuvic YermosolsLuvic KastanozemsCalcaric RegosolsCalcic Kastanozems
Topsoil TextureMediumMediumMediumMediumMediumMediumMedium
Reference Depth100 cm100 cm100 cm100 cm100 cm100 cm100 cm
DrainageModerately wellModerately wellModerately wellModerately wellModerately wellModerately wellModerately well
Available Water Capacity150 m150 m150 m150 m150 m150 m150 m
Topsoil Properties
Gravel20 %17 %20 %20 %8 %17 %8 %
Sand41 %43 %39 %50 %36 %43 %32 %
Silt39 %35 %37 %29 %41 %35 %43 %
Clay20 %22 %24 %21 %23 %22 %25 %
USDA TextureLoamLoamLoamLoamLoamLoamLoam
Reference Bulk Density1.41 g/cm³1.4 g/cm³1.38 g/cm³1.42 g/cm³1.38 g/cm³1.4 g/cm³1.36 g/cm³
Bulk Density1.51 g/cm³1.4 g/cm³1.46 g/cm³1.5 g/cm³1.2 g/cm³1.4 g/cm³1.26 g/cm³
Organic Carbon0.41 %0.77 %0.37 %0.4 %1.27 %0.77 %1.44 %
PH8.388.17.37.388.1
Clay Cation Exchange Capacity47 cmol kg⁻¹40 cmol kg⁻¹45 cmol kg⁻¹47 cmol kg⁻¹66 cmol kg⁻¹40 cmol kg⁻¹60 cmol kg⁻¹
Soil Cation Exchange Capacity8 cmol kg⁻¹17 cmol kg⁻¹15 cmol kg⁻¹7 cmol kg⁻¹23 cmol kg⁻¹17 cmol kg⁻¹19 cmol kg⁻¹
Base Saturation100 %100 %100 %100 %100 %100 %100 %
Total Exchangeable Bases18.1 cmol kg⁻¹31.1 cmol kg⁻¹24 cmol kg⁻¹14 cmol kg⁻¹18.4 cmol kg⁻¹31.1 cmol kg⁻¹18.4 cmol kg⁻¹
Calcium Carbonate1.5 %15 %26 %0.5 %4.5 %15 %5 %
Calcium Sulphate0.1 %0 %0.1 %0.1 %0 %0 %0 %
Exchangeable Sodium6 %2 %8 %6 %3 %2 %3 %
Electrical Conductivity1 dS m-10.3 dS m-12.4 dS m-10.1 dS m-10.1 dS m-10.3 dS m-11.1 dS m-1
Subsoil Properties
Gravel27 %18 %41 %27 %5 %18 %5 %
Sand38 %38 %30 %44 %29 %38 %30 %
Silt40 %36 %42 %28 %42 %36 %46 %
Clay22 %26 %28 %28 %29 %26 %24 %
USDA TextureLoamLoamClay loamClay loamClay loamLoamLoam
Reference Bulk Density1.39 g/cm³1.36 g/cm³1.34 g/cm³1.37 g/cm³1.33 g/cm³1.36 g/cm³1.36 g/cm³
Bulk Density1.49 g/cm³1.52 g/cm³1.3 g/cm³1.47 g/cm³1.18 g/cm³1.52 g/cm³1.22 g/cm³
Organic Carbon0.22 %0.53 %0.29 %0.28 %0.57 %0.53 %0.57 %
PH8.38.18.17.37.98.18.1
Clay Cation Exchange Capacity42 cmol kg⁻¹50 cmol kg⁻¹35 cmol kg⁻¹58 cmol kg⁻¹68 cmol kg⁻¹50 cmol kg⁻¹78 cmol kg⁻¹
Soil Cation Exchange Capacity9 cmol kg⁻¹15 cmol kg⁻¹11 cmol kg⁻¹11 cmol kg⁻¹24 cmol kg⁻¹15 cmol kg⁻¹18 cmol kg⁻¹
Base Saturation100 %100 %100 %100 %100 %100 %100 %
Total Exchangeable Bases26.8 cmol kg⁻¹41.1 cmol kg⁻¹21.8 cmol kg⁻¹14.6 cmol kg⁻¹21.1 cmol kg⁻¹41.1 cmol kg⁻¹21.1 cmol kg⁻¹
Calcium Carbonate4.5 %15 %35 %3.8 %10 %15 %14.3 %
Calcium Sulphate0.7 %0 %0.7 %0.7 %0 %0 %0 %
Exchangeable Sodium5 %1 %8 %4 %3 %1 %3 %
Electrical Conductivity3.8 dS m-10.3 dS m-12.6 dS m-19.7 dS m-13.6 dS m-10.3 dS m-12.5 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.
Köppen climate classification provided by Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006: World Map of Köppen-Geiger Climate Classification updated. Meteorol. Z., 15, 259-263