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Water 2017, 9(9), 647; https://doi.org/10.3390/w9090647

Integrating Topography and Soil Properties for Spatial Soil Moisture Storage Modeling

1
College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
2
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
3
School of Civil Engineering and Environmental Sciences, University of Oklahoma, Norman, OK 73019, USA
4
Advanced Radar Research Center, National Weather Center, Norman, OK 73019, USA
*
Author to whom correspondence should be addressed.
Received: 14 July 2017 / Revised: 15 August 2017 / Accepted: 24 August 2017 / Published: 30 August 2017
(This article belongs to the Special Issue Soil Water Conservation: Dynamics and Impact)
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Abstract

The understanding of the temporal and spatial dynamics of soil moisture and hydraulic property of soil is crucial to the study of hydrological and ecological processes. The purpose of this study was to derive equations that describe spatial soil water storage deficit based on topography and soil properties. This storage deficit together with the topographical index can be used to conclude the spatial distribution curve of storage capacity in a (sub-) basin for developing hydrological model. The established model was able to match spatial and temporal variations of water balance components (i.e., soil moisture content (SMC), evapotranspiration, and runoff) over the Ziluoshan basin. Explicit expression of the soil moisture storage capacity (SMSC) in the model reduced parameters, which provides a method for hydrological simulation in ungauged basins. View Full-Text
Keywords: soil moisture storage; van Genuchten model; distributed model; Xin’anjiang model; TOPMODEL soil moisture storage; van Genuchten model; distributed model; Xin’anjiang model; TOPMODEL
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Xiang, X.; Wu, X.; Chen, X.; Song, Q.; Xue, X. Integrating Topography and Soil Properties for Spatial Soil Moisture Storage Modeling. Water 2017, 9, 647.

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