Reserva de la Biosfera de Sian Ka'an

Location:Mexico
IUCN Category:VI
Area:1,312,618 acres (531,198 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Aw (Climate: equatorial; Precipitation: winter dry)

Ecoregions

Mesoamerican Gulf-Caribbean mangroves
Yucatán moist forests

Soils

Link to Map
Protected Area Boundary
 AB
   
Share75 %25 %45 %30 %25 %
Soil TypeRendzic LeptosolsLithic LeptosolsMollic GleysolsRendzic LeptosolsLithic Leptosols
Topsoil TextureMediumMediumFineMediumMedium
Reference Depth30 cm10 cm100 cm30 cm10 cm
DrainageImperfectlyImperfectlyVery poorImperfectlyImperfectly
Available Water Capacity50 mm15 mm150 m50 mm15 mm
Topsoil Properties
Gravel10 %28 %20 %10 %28 %
Sand42 %50 %34 %42 %50 %
Silt24 %26 %22 %24 %26 %
Clay34 %24 %44 %34 %24 %
USDA TextureClay loamSandy clay loamClayClay loamSandy clay loam
Reference Bulk Density1.33 g/cm³1.39 g/cm³1.27 g/cm³1.33 g/cm³1.39 g/cm³
Bulk Density1.2 g/cm³1.09 g/cm³1.1 g/cm³1.2 g/cm³1.09 g/cm³
Organic Carbon7.6 %14 %0.26 %7.6 %14 %
PH7.57.77.97.57.7
Clay Cation Exchange Capacity23 cmol kg⁻¹ 55 cmol kg⁻¹23 cmol kg⁻¹ 
Soil Cation Exchange Capacity35 cmol kg⁻¹44 cmol kg⁻¹25 cmol kg⁻¹35 cmol kg⁻¹44 cmol kg⁻¹
Base Saturation100 %100 %100 %100 %100 %
Total Exchangeable Bases35 cmol kg⁻¹44 cmol kg⁻¹25 cmol kg⁻¹35 cmol kg⁻¹44 cmol kg⁻¹
Calcium Carbonate15.9 %3.9 %2 %15.9 %3.9 %
Calcium Sulphate0.1 %0.1 %0.1 %0.1 %0.1 %
Exchangeable Sodium1 %4 %2 %1 %4 %
Electrical Conductivity0.2 dS m-10.4 dS m-10.2 dS m-10.2 dS m-10.4 dS m-1
Subsoil Properties
Gravel  10 %  
Sand  31 %  
Silt  22 %  
Clay  47 %  
USDA Texture  Clay  
Reference Bulk Density  1.26 g/cm³  
Bulk Density  1.1 g/cm³  
Organic Carbon  0.13 %  
PH  8  
Clay Cation Exchange Capacity  62 cmol kg⁻¹  
Soil Cation Exchange Capacity  30 cmol kg⁻¹  
Base Saturation  100 %  
Total Exchangeable Bases  30 cmol kg⁻¹  
Calcium Carbonate  2 %  
Calcium Sulphate  0.1 %  
Exchangeable Sodium  2 %  
Electrical Conductivity  0.5 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