[1]WU Yuanfei,XIAO Peiqing,HAO Shilong,et al.Response of Soil Moisture of Typical Shrubland and Waste Grassland to Precipitation in the Loess Hilly-Gully Region[J].Research of Soil and Water Conservation,2022,29(04):121-126.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 04
Page number:
121-126
Column:
Public date:
2022-06-20
- Title:
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Response of Soil Moisture of Typical Shrubland and Waste Grassland to Precipitation in the Loess Hilly-Gully Region
- Author(s):
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WU Yuanfei1,2, XIAO Peiqing2, HAO Shilong1, YANG Chunxia2
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(1.College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China; 2.Key Laboratory of Soil and Water Conservation on the Loess Plateau of MWR, Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China)
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- Keywords:
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soil moisture; land use mode; field fixed-point monitoring; precipitation; loess hilly-gully region
- CLC:
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S157.2; S152.7
- DOI:
-
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- Abstract:
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In order to study the variation characteristics of soil moisture and its response to precipitation in different land use patterns, the EM50 soil moisture data collector was used to continuously measure soil moisture in 0—50 cm soil layers of shrubland and barren grassland in slope runoff plot of the Xindiangou watershed in the loess hilly-gully region, and the variation characteristics of soil moisture in different underlying surfaces were systematically analyzed and studied. The results showed that:(1)the soil moisture of different land use patterns showed obvious seasonal variation characteristics; during the observation period, the average soil moisture of the barren grassland was 0.099, the average soil moisture of the shrubland was 0.091, and the soil moisture of the barren grassland was generally higher than that of the shrubland;(2)the vertical change trends of soil moisture in different land use patterns were similar, and generally decreased with the increase of soil depth, with obvious vertical variability; shrubland consumed more deep soil water content than barren grassland;(3)the vertical response of soil moisture to precipitation decreased with the increase of soil depth; the response of the 0—30 cm soil layer and 30—50 cm soil layer in the vertical direction of shrubland and waste grassland to precipitation was opposite. This research suggests that compared with waste grassland, shrubland consumes more soil moisture, and the deep soil moisture is limited by precipitation, which can easily lead to dry soil layers.