A Preliminary Ecoregion Classification System For
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ECOREGION 1: LIMPOPO PLAIN Table 1: Main attributes of the Limpopo Plain Ecoregion. Main Attributes Limpopo Plain Terrain Morphology: Broad division Plains; Low Relief; (dominant types in bold) (Primary) Plains; moderate relief; Lowlands; Hills and Mountains; moderate and high relief; Closed hills; Mountains; moderate and high relief (limited) Vegetation types (dominant types in bold) Mopane Bushveld; Sweet Bushveld; Mixed Bushveld; (Primary) Waterberg Moist Mountain Bushveld; Clay Thorn Bushveld; Kalahari Plains Thorn Bushveld Altitude (m a.m.s.l) (Secondary) 300-1100 (1100-1300 limited) MAP (mm) (modifying) 200 to 600 Coefficient of Variation (%) of annual 25 to 40 precipitation Rainfall concentration index 60 to >65 Rainfall seasonality Early to mid summer Mean annual temp. (°C) 18 to >22 Mean daily max. temp. (°C): February 26 to 32 Mean daily max. temp. (°C): July 20 to >24 Mean daily min. temp. (°C): February 16 to >20 Mean daily min. temp. (°C): July 2 to >10 Median annual simulated runoff (mm) for <5 to 60 (60-100 limited) quaternary catchment Main Attributes Limpopo Plain 1.01 Terrain Morphology: Broad division Plains; low relief; Plains; moderate relief; Lowlands, Hills and Mountains; moderate and high relief Terrain Morphology Plains; Slightly undulating plains; Slightly irregular plains; Extremely irregular plains (almost hilly) Lowlands with hills Vegetation types (dominant types in Mopane Bushveld bold) (Primary) Altitude (m a.m.s.l.) 100 to 900 MAP (mm) 200 to 400 Coefficient of variation (% of annual 30 to 39 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 precipitation) Rainfall concentration index >65 Rainfall seasonality Early to mid summer Mean annual temp (°C) 20 to >22 Mean daily max temp (°C) February 28 to 32 Mean daily max temp (°C) July 20 to 26 Mean daily min temp (°C) February 18 to >20 Mean daily min temp (°C) July 4 to >10 Median annual simulated runoff (mm) for <5 to 10 (10 to 40 limited) quaternary catchment Main Attributes Limpopo Plain 1.02 Terrain Morphology: Broad division Plains; low relief; Plains; moderate relief; Lowlands, Hills and Mountains; moderate and high relief; Closed Hills, Mountains; moderate and high relief. Terrain Morphology Plains; Slightly undulating plains; Slightly irregular plains; extremely irregular plains (almost hilly) (limited); Moderately undulating plains; Lowlands with parallel hills; Lowlands with mountains; High mountains Vegetation types (dominant types in bold) (Primary) SWEET BUSHVELD Altitude (m a.m.s.l.) 500 to 1300 MAP (mm) 300 to 500 Coefficient of variation (% of annual 25 to 39 precipitation) Rainfall concentration index 60 to >65 Rainfall seasonality Early to mid summer Mean annual temp (°C) 18 to 22 Mean daily max temp (°C) February 24 to 32 Mean daily max temp (°C) July 18 to 24 Mean daily min temp (°C) February 16 to 19 Mean daily min temp (°C) July 2 to 7 Median annual simulated runoff (mm) for <5 to 40; (40 to 60; 80 to 100 limited) quaternary catchment 2 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 Main Attributes Limpopo Plain 1.03 Terrain Morphology: Broad division Plains; low relief; Plains; moderate relief; Lowlands, Hills and Mountains; moderate and high relief (limited) Terrain Morphology Plains; Slightly undulating plains; Slightly irregular plains Lowlands with parallel hills Vegetation types (dominant types in bold) Mixed Bushveld; Waterberg Moist Mountain Bushveld; Kalahari (Primary) Plains Thorn Bushveld Altitude (m a.m.s.l.) 700 to 1300 MAP (mm) 300 to 600 Coefficient of variation (% of annual 25 to 34 precipitation) Rainfall concentration index 60 to >65 Rainfall seasonality Early to mid summer Mean annual temp (°C) 18 to 22 Mean daily max temp (°C) February 28 to 32 Mean daily max temp (°C) July 18 to 24 Mean daily min temp (°C) February 16 to 19 Mean daily min temp (°C) July 2 to 5 Median annual simulated runoff (mm) for <5 to 60 quaternary catchment Main Attributes Limpopo Plain 1.04 Terrain Morphology: Broad division Plains; low relief; Lowlands, hills and Mountains; moderate and high relief Terrain Morphology Plains Lowlands with parallel hills Vegetation types (dominant types in bold) Clay Thorn Bushveld (Primary) Altitude (m a.m.s.l.) 700 to 1100 MAP (mm) 300 to 500 Coefficient of variation (% of annual 25 to 34 precipitation) Rainfall concentration index 60 to >65 3 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 Main Attributes Limpopo Plain 1.03 Rainfall seasonality Early to mid summer Mean annual temp (°C) 18 to 22 Mean daily max temp (°C) February 30 to 32 Mean daily max temp (°C) July 20 to 24 Mean daily min temp (°C) February 16 to 19 Mean daily min temp (°C) July 2 to 3 Median annual simulated runoff (mm) for (10 to 20 very limited); 20 to 40 quaternary catchment 4 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 ECOREGION 2: SOUTPANSBERG Table 2: Main attributes of the Soutpansberg Ecoregion. Main Attributes Soutpansberg Terrain Morphology: Broad division (dominant Plains; Low Relief; (limited) types in bold) (Primary) Plains; Moderate Relief; (very limited) Lowlands; Hills and Mountains; Moderate and High Relief; Closed Hills; Mountains; Moderate and High Relief; Vegetation types (dominant types in bold) Sour Lowveld Bushveld; Soutpansberg Arid Mountain (Primary) Bushveld; Mopane Bushveld (very limited) Patches AfroMontane Forest. Altitude (m a.m.s.l) (secondary) 300-1700 MAP (mm) (modifying) 200 to 1000 Coefficient of Variation (% of annual <20 to 40 precipitation) Rainfall concentration index 55 to >65 Rainfall seasonality Mid summer Mean annual temp. (°C) 16 to >22 Mean daily max. temp. (°C): February 22 to 32 Mean daily max. temp. (°C): July 16 to >24 Mean daily min. temp. (°C): February 14 to >20 Mean daily min temp. (°C): July 4 to >10 Median annual simulated runoff (mm) for <5 to 200; >250 (limited) quaternary catchment Main Attributes Soutpansberg 2.01 Terrain Morphology: Broad division Plains; low relief; Lowlands, Hills and Mountains; moderate and high relief; Closed Hills, Mountains; moderate and high relief Terrain Morphology Slightly undulating plains; Lowlands with mountains High Mountains Vegetation types (dominant types in bold) Soutpansberg Arid Mountain Bushveld 5 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 (Primary) Altitude (m a.m.s.l.) 700 to 1700 MAP (mm) 300 to 500 Coefficient of variation (% of annual 25 to 34 precipitation) Rainfall concentration index >65 Rainfall seasonality Mid summer Mean annual temp (°C) 16 to 22 Mean daily max temp (°C) February 24 to 30 Mean daily max temp (°C) July 16 to 22 Mean daily min temp (°C) February 14 to 19 Mean daily min temp (°C) July 4 to 7 Median annual simulated runoff (mm) for <5 (limited) to 40 quaternary catchment Main Attributes Soutpansberg 2.02 Terrain Morphology: Broad division Plains; low relief; Plains; moderate relief; Lowlands, Hills and Mountains; moderate and high relief Terrain Morphology Plains; Slightly undulating plains Extremely irregular plains (low hills) and pans Lowlands with hills Vegetation types (dominant types in bold) Soutpansberg Arid Mountain Bushveld (primary) Altitude (m a.m.s.l.) 300 to 900 (900 to 1700 limited) MAP (mm) 200 to 500 Coefficient of variation (% of annual 25 to 39 precipitation) Rainfall concentration index 60 to >65 Rainfall seasonality Mid summer Mean annual temp (°C) 16 to >22 Mean daily max temp (°C) February 24 to 32 Mean daily max temp (°C) July 18 to 26 Mean daily min temp (°C) February 18 to >20 6 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 Mean daily min temp (°C) July 4 to >10 Median annual simulated runoff (mm) for <5 (limited) to 40 quaternary catchment Main Attributes Soutpansberg 2.03 Terrain Morphology: Broad division Plains; low relief; Closed hills, Mountains; moderate and high relief Terrain Morphology (Primary) Slightly undulating plains; Low mountains Vegetation types (dominant types in bold) Soutpansberg Arid Mountain Bushveld (Primary) Altitude (m a.m.s.l.) 300 to 1500 MAP (mm) 300 to 700 Coefficient of variation (% of annual 20 to 34 precipitation) Rainfall concentration index 60 to >65 Rainfall seasonality Mid summer Mean annual temp (°C) 16 to 22 Mean daily max temp (°C) February 22 to 32 Mean daily max temp (°C) July 16 to 24 Mean daily min temp (°C) February 14 to 19 Mean daily min temp (°C) July 4 to 9 Median annual simulated runoff (mm) for 5 to 10; 20 to 100; (80 to 100 limited); 150 to 200 (limited) quaternary catchment Main Attributes Soutpansberg 2.04 Terrain Morphology: Broad division Closed Hills, Mountains; moderate and high relief Terrain Morphology Low mountains Vegetation types (dominant types in bold) Soutpansberg Arid Mountain Bushveld (limited); Sour (primary) Lowveld Bushveld; Patches Mopane Shrubveld Patches Afromontane forest Altitude (m a.m.s.l.) 300 to 1500 MAP (mm) 300 to 1000 7 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 Main Attributes Soutpansberg 2.03 Coefficient of variation (% of annual <20 to 34 precipitation) Rainfall concentration index 55 to >65 Rainfall seasonality Mid summer Mean annual temp (°C) 16 to >22 Mean daily max temp (°C) February 22 to 32 Mean daily max temp (°C) July 16 to 26 Mean daily min temp (°C) February 14 to >20 Mean daily min temp (°C) July 4 to >10 Median annual simulated runoff (mm) for 5-10 (limited); 20 to 200; >250 (limited) quaternary catchment 8 Draft: Resource Quality Information Services, Roodeplaat Dam - 2008 ECOREGION 3: LOWVELD Table 3: Main attributes of the