The objective of this study was to explore spatio-temporal variability characteristic of soil volumetric moisture content (SVMC) during wheat and maize rotation system. In the article, SVMC was determined by the Time Domain Reflectometry (TDR), a total of 104 soil moisture content data from sampling sites were collected from the surface layer (0–20cm) at the experiment field (117°3’55.74"E, 36°43’8.99"N) with the support of grid-sampling method, sample measurements were implemented on June 3rd and on September 24th, 2009. On each sampling point, we inserted vertically TDR probe to monitor soil moisture. Each moisture measurement was geo-referenced using a Differential Global Positioning System (DGPS). The statistical analysis results showed that the SVMC range from 2.65 to 4.65 covered approximately percent 67% of the total samplings on June 3rd, which indicated the important effects on the total statistical distribution. Approximately percent 76% of the total samplings range from 45.4 to 55.4 on September 24th. To analyze the temporal variability of SVMC, we developed the comparison analysis results also indicated that the spatial pattern of SVMC clarified the fundamental complicated factors of the spatial structures and the comprehensive factors, and the exogenous variable decreased the effects on the spatial variability of SVMC from percent 70.9% to 54.9%, the random factors dominated the spatial variability of SVMC. The spatial distribution map of SVMC by Kriging interpolation was better to help us precisely and well understand the spatial distribution pattern of the SVMC of wheat-maize rotation system on the field scale.
[1]
T. Carlson,et al.
On the relation between NDVI, fractional vegetation cover, and leaf area index
,
1997
.
[2]
Daoliang Li,et al.
Computer and Computing Technologies in Agriculture IV - 4th IFIP TC 12 Conference, CCTA 2010, Nanchang, China, October 22-25, 2010, Selected Papers, Part I
,
2011,
CCTA.
[3]
Yang JingSong,et al.
The Trend Variability of Soil Organic Matter Content in the Salinity Region of Yucheng City in Shandong Province
,
2005
.
[4]
Jianhua Zhu,et al.
The Spatial Pattern Characteristics of Soil Nutrients at the Field Scale
,
2008,
CCTA.
[5]
Jianhua Zhu,et al.
The spatial continuity study of NDVI based on Kriging and BPNN algorithm
,
2011,
Math. Comput. Model..
[6]
Frank Veroustraete,et al.
Assessment of Evapotranspiration and Soil Moisture Content Across Different Scales of Observation
,
2008,
Sensors.
[7]
José Luis Araus,et al.
Relationship between Growth Traits and Spectral Vegetation Indices in Durum Wheat
,
2002
.