SPATIAL and temporal distribution characteristics of erosion dynamics in watersheds under the influence of different rainfall types and underlying surface
Authors: Huang Jin Hua 
Published: March 2022

&lt;p&gt;In &lt;span&gt;order&lt;/span&gt; &lt;span&gt;to&lt;/span&gt; &lt;span&gt;scientifically&lt;/span&gt; &lt;span&gt;understand&lt;/span&gt; &lt;span&gt;the&lt;/span&gt; &lt;span&gt;spatial&lt;/span&gt; &lt;span&gt;distribution&lt;/span&gt; &lt;span&gt;characteristics&lt;/span&gt; &lt;span&gt;of&lt;/span&gt; hydrological &lt;span&gt;hydrodynamics&lt;/span&gt; &lt;span&gt;in&lt;/span&gt; &lt;span&gt;river&lt;/span&gt; &lt;span&gt;basins&lt;/span&gt; &lt;span&gt;under&lt;/span&gt; &lt;span&gt;different&lt;/span&gt; &lt;span&gt;conditions&lt;/span&gt; &lt;span&gt;(land&lt;/span&gt; &lt;span&gt;use,&lt;/span&gt; &lt;span&gt;rainfall),&lt;/span&gt; &lt;span&gt;the&lt;/span&gt; &lt;span&gt;flood&lt;/span&gt; &lt;span&gt;process&lt;/span&gt; &lt;span&gt;of&lt;/span&gt; &lt;span&gt;Wan'an&lt;/span&gt; &lt;span&gt;Small&lt;/span&gt; &lt;span&gt;Watershed&lt;/span&gt; &lt;span&gt;was&lt;/span&gt; &lt;span&gt;simulated&lt;/span&gt; &lt;span&gt;by&lt;/span&gt; &lt;span&gt;coupling&lt;/span&gt; the &lt;span&gt;distributed&lt;/span&gt; &lt;span&gt;hydrological&lt;/span&gt; &lt;span&gt;model&lt;/span&gt; &lt;span&gt;MIKE&lt;/span&gt; &lt;span&gt;SHE&lt;/span&gt; &lt;span&gt;and&lt;/span&gt; &lt;span&gt;the&lt;/span&gt; &lt;span&gt;one-dimensional&lt;/span&gt; &lt;span&gt;hydrodynamic&lt;/span&gt; &lt;span&gt;model&lt;/span&gt; &lt;span&gt;MIKE11,&lt;/span&gt; &lt;span&gt;revealing&lt;/span&gt; &lt;span&gt;the&lt;/span&gt; &lt;span&gt;variation&lt;/span&gt; &lt;span&gt;characteristics&lt;/span&gt; &lt;span&gt;of&lt;/span&gt; &lt;span&gt;hydrodynamic&lt;/span&gt; &lt;span&gt;parameters&lt;/span&gt; &lt;span&gt;at&lt;/span&gt; &lt;span&gt;different&lt;/span&gt; &lt;span&gt;scales&lt;/span&gt; &lt;span&gt;of&lt;/span&gt; &lt;span&gt;main&lt;/span&gt; &lt;span&gt;ditch&lt;/span&gt; &lt;span&gt;and&lt;/span&gt; &lt;span&gt;branch&lt;/span&gt; &lt;span&gt;ditch&lt;/span&gt; in &lt;span&gt;the&lt;/span&gt; &lt;span&gt;basin.&lt;/span&gt; T&lt;span&gt;he &lt;/span&gt;r&lt;span&gt;esults &lt;/span&gt;s&lt;span&gt;how &lt;/span&gt;t&lt;span&gt;hat: &lt;/span&gt;(&lt;span&gt;1) &lt;/span&gt;D&lt;span&gt;ifferent &lt;/span&gt;r&lt;span&gt;ainfall &lt;/span&gt;t&lt;span&gt;ypes &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;underlying surface c&lt;span&gt;onditions &lt;/span&gt;c&lt;span&gt;hanged &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;d&lt;span&gt;istribution &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;e&lt;span&gt;rosion &lt;/span&gt;d&lt;span&gt;ynamics &lt;/span&gt;i&lt;span&gt;n &lt;/span&gt;s&lt;span&gt;mall &lt;/span&gt;w&lt;span&gt;atershed &lt;/span&gt;c&lt;span&gt;hannels, &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;erosion d&lt;span&gt;ynamic &lt;/span&gt;p&lt;span&gt;arameters &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;d&lt;span&gt;itches &lt;/span&gt;w&lt;span&gt;ith &lt;/span&gt;s&lt;span&gt;maller &lt;/span&gt;c&lt;span&gt;umulative &lt;/span&gt;r&lt;span&gt;ainfall &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;r&lt;span&gt;ain &lt;/span&gt;i&lt;span&gt;ntensity &lt;/span&gt;d&lt;span&gt;ecreased &lt;/span&gt;g&lt;span&gt;reater. &lt;/span&gt;(&lt;span&gt;2) &lt;/span&gt;T&lt;span&gt;he &lt;/span&gt;e&lt;span&gt;rosion &lt;/span&gt;p&lt;span&gt;ower &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;r&lt;span&gt;unoff &lt;/span&gt;i&lt;span&gt;n &lt;/span&gt;s&lt;span&gt;mall &lt;/span&gt;w&lt;span&gt;atersheds &lt;/span&gt;i&lt;span&gt;s &lt;/span&gt;c&lt;span&gt;haracterized &lt;/span&gt;b&lt;span&gt;y &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;c&lt;span&gt;hange &lt;/span&gt;t&lt;span&gt;rend &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;l&lt;span&gt;arge &lt;/span&gt;u&lt;span&gt;pstream, &lt;/span&gt;s&lt;span&gt;mall &lt;/span&gt;d&lt;span&gt;ownstream, &lt;/span&gt;l&lt;span&gt;arge &lt;/span&gt;t&lt;span&gt;ributaries &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;s&lt;span&gt;mall &lt;/span&gt;m&lt;span&gt;ain &lt;/span&gt;d&lt;span&gt;itches, &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;c&lt;span&gt;hanges &lt;/span&gt;i&lt;span&gt;n &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;u&lt;span&gt;pper &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;m&lt;span&gt;iddle &lt;/span&gt;r&lt;span&gt;eaches &lt;/span&gt;a&lt;span&gt;re &lt;/span&gt;m&lt;span&gt;ore &lt;/span&gt;d&lt;span&gt;rastic &lt;/span&gt;t&lt;span&gt;han &lt;/span&gt;t&lt;span&gt;hose &lt;/span&gt;i&lt;span&gt;n &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;d&lt;span&gt;ownstream. &lt;/span&gt;(&lt;span&gt;3) &lt;/span&gt;T&lt;span&gt;he &lt;/span&gt;i&lt;span&gt;mpact &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;l&lt;span&gt;and &lt;/span&gt;u&lt;span&gt;se &lt;/span&gt;c&lt;span&gt;hange &lt;/span&gt;o&lt;span&gt;n &lt;/span&gt;h&lt;span&gt;eavy &lt;/span&gt;r&lt;span&gt;ainfall &lt;/span&gt;o&lt;span&gt;ver &lt;/span&gt;s&lt;span&gt;hort &lt;/span&gt;d&lt;span&gt;uration &lt;/span&gt;i&lt;span&gt;s &lt;/span&gt;s&lt;span&gt;mall, &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;v&lt;span&gt;ariation &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;e&lt;span&gt;rosion &lt;/span&gt;d&lt;span&gt;ynamic &lt;/span&gt;p&lt;span&gt;arameters &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;m&lt;span&gt;ain &lt;/span&gt;d&lt;span&gt;itch &lt;/span&gt;i&lt;span&gt;s &lt;/span&gt;s&lt;span&gt;ignificantly &lt;/span&gt;g&lt;span&gt;reater &lt;/span&gt;t&lt;span&gt;han &lt;/span&gt;t&lt;span&gt;hat &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;b&lt;span&gt;ranch &lt;/span&gt;d&lt;span&gt;itch. &lt;/span&gt;T&lt;span&gt;he &lt;/span&gt;r&lt;span&gt;esearch &lt;/span&gt;r&lt;span&gt;esults &lt;/span&gt;c&lt;span&gt;an &lt;/span&gt;p&lt;span&gt;rovide &lt;/span&gt;a s&lt;span&gt;cientific &lt;/span&gt;r&lt;span&gt;eference &lt;/span&gt;f&lt;span&gt;or &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;p&lt;span&gt;lanning &lt;/span&gt;o&lt;span&gt;f &lt;/span&gt;s&lt;span&gt;oil &lt;/span&gt;a&lt;span&gt;nd &lt;/span&gt;w&lt;span&gt;ater &lt;/span&gt;c&lt;span&gt;onservation &lt;/span&gt;i&lt;span&gt;n &lt;/span&gt;t&lt;span&gt;he &lt;/span&gt;Y&lt;span&gt;angtze &lt;/span&gt;R&lt;span&gt;iver &lt;/span&gt;B&lt;span&gt;asin.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;&lt;strong&gt;Keywords: &lt;/strong&gt;MIKE model; Model simulation; hydrological hydrodynamics; rainfall types;&amp;#160;&lt;/span&gt;&lt;/p&gt;