Capulin Volcano National Monument

Location:New Mexico, United States
IUCN Category:V
Area:796 acres (322 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)


Western short grasslands


Protected Area Boundary
Share70 %30 %
Soil TypeCalcic KastanozemsLuvic Kastanozems
Topsoil TextureMediumMedium
Reference Depth100 cm100 cm
DrainageImperfectlyModerately well
Available Water Capacity50 m150 m
Phase 1Lithic 
Topsoil Properties
Gravel8 %8 %
Sand32 %36 %
Silt43 %41 %
Clay25 %23 %
USDA TextureLoamLoam
Reference Bulk Density1.36 g/cm³1.38 g/cm³
Bulk Density1.26 g/cm³1.2 g/cm³
Organic Carbon1.44 %1.27 %
Clay Cation Exchange Capacity60 cmol kg⁻¹66 cmol kg⁻¹
Soil Cation Exchange Capacity19 cmol kg⁻¹23 cmol kg⁻¹
Base Saturation100 %100 %
Total Exchangeable Bases18.4 cmol kg⁻¹18.4 cmol kg⁻¹
Calcium Carbonate5 %4.5 %
Calcium Sulphate0 %0 %
Exchangeable Sodium3 %3 %
Electrical Conductivity1.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel5 %5 %
Sand30 %29 %
Silt46 %42 %
Clay24 %29 %
USDA TextureLoamClay loam
Reference Bulk Density1.36 g/cm³1.33 g/cm³
Bulk Density1.22 g/cm³1.18 g/cm³
Organic Carbon0.57 %0.57 %
Clay Cation Exchange Capacity78 cmol kg⁻¹68 cmol kg⁻¹
Soil Cation Exchange Capacity18 cmol kg⁻¹24 cmol kg⁻¹
Base Saturation100 %100 %
Total Exchangeable Bases21.1 cmol kg⁻¹21.1 cmol kg⁻¹
Calcium Carbonate14.3 %10 %
Calcium Sulphate0 %0 %
Exchangeable Sodium3 %3 %
Electrical Conductivity2.5 dS m-13.6 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