Nam Xam National Biodiversity Conservation Area

Location:Laos
IUCN Category:VI
Area:186,111 acres (75,316 hectares)
Species:All  Endangered  Invasive
Climate:View Climate Data
Land Use:View Land Use Data
Köppen climate classification:Cwa (Climate: warm temperate; Precipitation: winter dry; Temperature: hot summer)

Ecoregions

Northern Indochina subtropical forests

Soils

Protected Area Boundary
 A
  
Share35 %35 %10 %10 %10 %
Soil TypeOrthic AcrisolsOrthic AcrisolsLithosolsDystric CambisolsHumic Acrisols
Topsoil TextureMediumFineMediumMediumMedium
Reference Depth100 cm100 cm10 cm100 cm100 cm
DrainageImperfectlyImperfectlyImperfectlyModerately wellModerately well
Available Water Capacity50 m50 m15 mm150 m150 m
Phase 1LithicLithic   
Topsoil Properties
Gravel10 %4 %26 %10 %5 %
Sand49 %29 %43 %41 %46 %
Silt27 %25 %34 %39 %30 %
Clay24 %46 %23 %20 %24 %
USDA TextureSandy clay loamClayLoamLoamLoam
Reference Bulk Density1.4 g/cm³1.26 g/cm³1.39 g/cm³1.41 g/cm³1.39 g/cm³
Bulk Density1.4 g/cm³1.27 g/cm³1.3 g/cm³1.3 g/cm³1.3 g/cm³
Organic Carbon1 %1.07 %1.4 %1.45 %1.73 %
PH4.64.67.65.15
Clay Cation Exchange Capacity16 cmol kg⁻¹13 cmol kg⁻¹42 cmol kg⁻¹30 cmol kg⁻¹19 cmol kg⁻¹
Soil Cation Exchange Capacity7 cmol kg⁻¹11 cmol kg⁻¹15 cmol kg⁻¹12 cmol kg⁻¹9 cmol kg⁻¹
Base Saturation44 %38 %100 %37 %27 %
Total Exchangeable Bases3.5 cmol kg⁻¹5.7 cmol kg⁻¹15.6 cmol kg⁻¹4.1 cmol kg⁻¹2.5 cmol kg⁻¹
Calcium Carbonate0 %0 %3.9 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %
Exchangeable Sodium1 %1 %4 %1 %1 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel10 %4 % 20 %7 %
Sand40 %23 % 45 %41 %
Silt24 %22 % 35 %26 %
Clay36 %55 % 20 %33 %
USDA TextureClay loamClay LoamClay loam
Reference Bulk Density1.32 g/cm³1.23 g/cm³ 1.42 g/cm³1.34 g/cm³
Bulk Density1.4 g/cm³1.27 g/cm³ 1.37 g/cm³1.35 g/cm³
Organic Carbon0.42 %0.46 % 0.5 %0.77 %
PH4.84.9 5.25.2
Clay Cation Exchange Capacity14 cmol kg⁻¹12 cmol kg⁻¹ 36 cmol kg⁻¹15 cmol kg⁻¹
Soil Cation Exchange Capacity6 cmol kg⁻¹9 cmol kg⁻¹ 9 cmol kg⁻¹7 cmol kg⁻¹
Base Saturation32 %23 % 33 %21 %
Total Exchangeable Bases2.3 cmol kg⁻¹2.7 cmol kg⁻¹ 2.6 cmol kg⁻¹3 cmol kg⁻¹
Calcium Carbonate0 %0 % 0 %0 %
Calcium Sulphate0 %0 % 0 %0 %
Exchangeable Sodium2 %1 % 1 %1 %
Electrical Conductivity0.1 dS m-10.1 dS m-1 0.1 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