The China Dataset of Soil Hydraulic Parameters Using Pedotransfer Functions for Land Surface Modeling

Introduction | Data citation | Data download

The China dataset of soil hydraulic parameters using different (Pedotransfer Functions) PTFs is provided for Land Surface Modeling.

The dataset was derived from multi-PTFs (pedotranfer functions) estimation. It includes the parameters in the Clapp and Hornberger Functions (FCH) and in the van Genuchten and Mualem Functions (FGM), and soil water contents at capillary pressures of 33 and 1500 kPa, respectively. The median and coefficient of variation (CV) of the estimation are provided.

The resolution is 30 arc-seconds. The vertical variation of soil property was captured by seven layers to the depth of 1.38 m (i.e. 0-0.045, 0.045-0.091, 0.091-0.166, 0.166-0.289, 0.289-0.493, 0.493-0.829, 0.829-1.383 m).

The documentation of the dataset can be downloaded here, including readme file and the data citation paper.

Dai, Y., W. Shangguan, Q. Duan, B. Liu, S. Fu, G. Niu, 2013: Development of a China Dataset of Soil Hydraulic Parameters Using Pedotransfer Functions for Land Surface Modeling. Journal of Hydrometeorology, 14: 869-887

The dataset in NetCDF format can be downloaded in the following table.

No.	Attribute	Symbol	Unit	Data
1.	Saturated water content of FCH		cm3 cm-3	THSCH.nc
2.	Saturated capillary potential of FCH		cm	PSI_S.nc
3.	Pore size distribution index of FCH		-	LAMBDA.nc
4.	Saturate hydraulic conductivity of FCH		cm d-1	K_SCH.nc
5.	Residual moisture content of FGM		cm3 cm-3	THR.nc
6.	Saturated water content of FGM		cm3 cm-3	THSGM.nc
7.	The inverse of the air-entry value of FGM		cm-1	ALPHA.nc
8.	The shape parameter of FGM		-	N.nc
9.	The pore-connectivity parameter of FGM		-	L.nc
10.	Saturated hydraulic conductivity of FGM		cm d-1	K_SVG.nc
11.	Water content at -33 kPa of suction pressure, or field capacity		cm3 cm-3	TH33.nc
12.	Water content at -1500 kPa of suction pressure, or permanent wilting point		cm3 cm-3	TH1500.nc