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@ARTICLE{Tian:864347,
      author       = {Tian, Jie and Zhang, Baoqing and He, Chansheng and Han,
                      Zhibo and Bogena, Heye Reemt and Huisman, Johan Alexander},
      title        = {{D}ynamic response patterns of profile soil moisture
                      wetting events under different land covers in the
                      {M}ountainous area of the {H}eihe {R}iver {W}atershed,
                      {N}orthwest {C}hina},
      journal      = {Agricultural and forest meteorology},
      volume       = {271},
      issn         = {0168-1923},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2019-04143},
      pages        = {225 - 239},
      year         = {2019},
      abstract     = {Understanding the dynamic response of soil moisture to
                      rainfall is critical for hydrological modelling in arid and
                      semi-arid basins. However, little is known about
                      rainfall-related soil moisture dynamics in arid
                      high-altitude mountainous areas due to the absence of
                      long-term high-resolution soil moisture observations. In
                      this study, we investigated the dynamic response processes
                      of profile soil moisture using data from a soil moisture
                      monitoring network in the Qilian Mountains established in
                      2013 covering altitudes from 2,000–5,000 m a.s.l. To
                      investigate the effects of different land covers on soil
                      moisture response, we selected data from eight soil moisture
                      stations with the same soil textural class and slope, but
                      different land covers (scrubland, meadow, high coverage
                      grassland (HCG), medium coverage grassland (MCG) and barren
                      land). Several indices were evaluated to quantitatively
                      describe soil moisture dynamics during the growing seasons
                      of 2014–2016 based on soil wetting events. In addition,
                      HYDRUS-1D simulations were used to further analyze the
                      effect of land cover on soil moisture dynamics. Our results
                      showed that soil moisture response amplitudes along profile
                      are similar under MCG and barren land, but significantly
                      different under scrubland, meadow and HCG. The rate of soil
                      moisture increment decreased significantly with depth for
                      all land covers, except for the HCG. The temporal pattern of
                      soil moisture increase was highly variable along the soil
                      profiles depending on land cover type. In particular, the
                      difference of response time between the adjacent layers
                      varied from negative values to 280 h with depth.
                      Preferential flow occurred mostly in soils covered by
                      scrubland. Water transferability was higher in deeply rooted
                      soil. Furthermore, sensitivity analysis indicated that soil
                      hydraulic properties are key factors in regulating profile
                      soil wetting events. Our results show that the soil moisture
                      response indices are useful to quantitatively characterize
                      patterns in profile soil moisture dynamics, and provide new
                      insights into the soil moisture profile wetting process
                      (e.g. occurrence of preferential flow etc.), which helps for
                      effective model parameterization and validation, in turn
                      improving hydrological modelling in arid high-altitude
                      mountainous areas.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000468709200022},
      doi          = {10.1016/j.agrformet.2019.03.006},
      url          = {https://juser.fz-juelich.de/record/864347},
}