[1]LI Zheng,HU Guiqing,QU Tao,et al.Responses of Runoff and Sediment Yield to Rainfall, Soil Types Under Different Managed Grasslands in Yili Valley[J].Research of Soil and Water Conservation,2022,29(05):62-69.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 05
Page number:
62-69
Column:
Public date:
2022-08-20
- Title:
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Responses of Runoff and Sediment Yield to Rainfall, Soil Types Under Different Managed Grasslands in Yili Valley
- Author(s):
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LI Zheng, HU Guiqing, QU Tao, ZHANG Hexin, ZHANG Wentai, LI Yangang, AIKEBAIER Yilahong
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(Xinjiang Key Laboratory of Soil and Plant Ecological Processes/College of Grassland and Environmental Sciences, Xinjiang Agricultural University, Urumqi 830052, China)
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- Keywords:
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runoff and sediment yield; grassland management measures; rainfall types; soil types
- CLC:
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S157.1
- DOI:
-
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- Abstract:
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In order to prevent and control water erosion of grassland in Xinjiang and reveal the erosion control mechanism of different grassland management measures, we selected two kinds of soil(gray calcareous soil, brown-red soil)grasslands in Yili Valley of Xinjiang, and measured runoff and sediment yields of four management measures(degraded grassland, level trench, infiltration hole and grass mulching)from 2019 to 2020. The characteristics of runoff and sediment yield and responses to rainfall, soil types under different measures were discussed. The results showed that:(1)short duration and high intensity occasional rainstorm(C-type rainfall)was the dominant erosive rainfall of grassland erosion; the frequency of heavy rain(B-type rainfall)with high rainfall and long duration was the most, but it had the least impact on soil erosion; under the condition of continuous rainfall, even if the rainfall and rainfall intensity(A-type rainfall)were low, the grassland could be seriously eroded;(2)the runoff and sediment yield of each measure under C-type rainfall was significantly higher than that of A-type and B-type rainfalls; the average runoff yield of infiltration hole and degraded grassland under A-type rainfall was higher than that of B-type rainfall, while the results of grass mulching and level trench were opposite; the order of sediment yield was degraded grassland>infiltration hole>level trench>grass mulching under any rainfalls;(3)the erosion control effect of different measures varied with different soil types, the runoff reduction effect of grass mulching on brown-red soil grassland was the best, and level trench reduced runoff yield of gray calcareous soil grassland better; the sediment yield of each measure in brown-red soil grassland was greater than that in gray calcareous soil grassland. Therefore, the auxiliary management of degraded grassland can effectively reduce soil and water loss. The effect of reducing runoff and sediment is excellent in grass mulching and level trench, which can be popularized and applied in the prevention soil and water loss of grassland in Xinjiang.