Measuring and verifying of soil moisture in desert steppe from different spatial scaling

Soil moisture (SM) plays a decisive function during the grassland degradation and restoration process. In this paper, SM in desert steppe is measured with various methods at different spatial scale, including point-, field- and regional-scale, and the SM results from FDR, CRS and remote sensing (RS)...

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Bibliographic Details
Main Authors: Zhiguo Pang, Jingya Cai, Wenlong Song, Yizhu Lu
Format: Conference Proceeding
Language:English
Subjects:
Area measurement
cosmic-ray neutron
Geophysical measurements
Land surface
Moisture measurement
point measurement
Remote sensing
remote sensing (RS)
Soil measurements
Soil moisture
soil moisture (SM)
verification
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Summary:Soil moisture (SM) plays a decisive function during the grassland degradation and restoration process. In this paper, SM in desert steppe is measured with various methods at different spatial scale, including point-, field- and regional-scale, and the SM results from FDR, CRS and remote sensing (RS) are verified mutually. The results show that CRS is adaptable to measure desert steppe, of which with FDR R 2 is 0.83 and RMSE is 0.0162kg/kg; substituting CRS SM validated for traditional point measurement to verify RS retrieval, a much stronger correlation is achieved with R 2 of 0.97 much bigger than that of FDR and RS, whose R 2 is only 0.80, proving quantifiably that CRS is obviously a new effective means for verifying SM of RS retrieval.
ISSN:2153-7003
DOI:10.1109/IGARSS.2016.7729771