Cwm Cadlan

Location:Wales, United Kingdom
Area:207 acres (84 hectares)
Species:All  Endangered  Invasive
Website:View website
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Cfb (Climate: warm temperate; Precipitation: fully humid; Temperature: warm summer)
Natura 2000 Data Sheet:View Data Sheet  Explanatory notes

Ecoregions

Celtic broadleaf forests

Soils

Protected Area Boundary
 A
  
Share55 %20 %15 %10 %
Soil TypeUmbric GleysolsDystric GleysolsFerric PodzolsFibric Histosols
Topsoil TextureMediumMediumMediumFine
Reference Depth100 cm100 cm100 cm100 cm
DrainagePoorPoorModerately wellVery poor
Available Water Capacity50 m75 m15 m150 m
Phase 1Stony Stony 
Root ObstacleNone to 80 cmNone to 80 cm40 - 60 cmNone to 80 cm
Impermeable Layer0 - 40 cm0 - 40 cm0 - 40 cmNone to 150 cm
Soil Water RegimeWet within 40 cm depth for over 11 monthWet within 80 cm over 6 months, but not wet within 40 cm for over 11 monthWet within 40 cm depth for over 11 monthWet within 40 cm depth for over 11 month
Topsoil Properties
Gravel4 %2 %15 %1 %
Sand38 %40 %45 %20 %
Silt42 %39 %52 %40 %
Clay20 %21 %3 %40 %
USDA TextureLoamLoamSilt loamClay
Reference Bulk Density1.4 g/cm³1.4 g/cm³1.7 g/cm³1.26 g/cm³
Bulk Density1.31 g/cm³1.3 g/cm³0.96 g/cm³0.1 g/cm³
Organic Carbon4.59 %1.17 %4.6 %33.63 %
PH5.25.14.64.3
Clay Cation Exchange Capacity34 cmol kg⁻¹25 cmol kg⁻¹64 cmol kg⁻¹45 cmol kg⁻¹
Soil Cation Exchange Capacity20 cmol kg⁻¹11 cmol kg⁻¹20 cmol kg⁻¹77 cmol kg⁻¹
Base Saturation82 %47 %10 %62 %
Total Exchangeable Bases1.8 cmol kg⁻¹5.5 cmol kg⁻¹4.4 cmol kg⁻¹31.4 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %
Exchangeable Sodium2 %1 %1 %2 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel5 %6 %17 %2 %
Sand38 %41 %51 %47 %
Silt32 %34 %45 %26 %
Clay30 %25 %4 %27 %
USDA TextureClay loamLoamSandy loamSandy clay loam
Reference Bulk Density1.34 g/cm³1.38 g/cm³1.67 g/cm³1.38 g/cm³
Bulk Density1.49 g/cm³1.36 g/cm³1.29 g/cm³0.1 g/cm³
Organic Carbon0.67 %0.4 %0.81 %32.89 %
PH5.25.35.14.6
Clay Cation Exchange Capacity38 cmol kg⁻¹29 cmol kg⁻¹56 cmol kg⁻¹71 cmol kg⁻¹
Soil Cation Exchange Capacity11 cmol kg⁻¹10 cmol kg⁻¹9 cmol kg⁻¹78 cmol kg⁻¹
Base Saturation86 %47 %13 %40 %
Total Exchangeable Bases10 cmol kg⁻¹6.1 cmol kg⁻¹0.8 cmol kg⁻¹27.4 cmol kg⁻¹
Calcium Carbonate0 %0 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %
Exchangeable Sodium4 %1 %2 %1 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 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.
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