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[1]WANG Lijuan,GUO Ni,WANG Wei,et al.The Soil Water Content Monitoring Based on the Temperature Difference in the Northwest China[J].Research of Soil and Water Conservation,2018,25(05):330-336.

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The Soil Water Content Monitoring Based on the Temperature Difference in the Northwest China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 330-336 Column: Public date: 2018-09-06

Title:: The Soil Water Content Monitoring Based on the Temperature Difference in the Northwest China

Author(s):: WANG Lijuan, GUO Ni, WANG Wei, WANG Suping, SHA Sha, HU Die; Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster/Key Laboratory of Arid Climatic Change and Disaster Reduction of CMA/Institute of Arid Meteorology, CMA, Lanzhou 730020, China

Keywords:: HiWATER; soil moisture; temperature parameter

CLC:: P461

DOI:: -

Abstract:: Based on the HiWATER data in 2012, the vertical temperature difference (the difference between land surface temperature and air temperature) and the diurnal range of temperature on sites were calculated using the land surface temperature product of remote sensing, and then the correlations between the soil moisture (the 2 cm, 4 cm and 10 cm soil moisture) and temperature parameters on varied time scales were analyzed. In order to verify the monitoring ability of the temperature parameters, the air temperature of the study area was estimated using the longitude, latitude and altitude, and the temperature parameters were normalized to avoid the difference of geographical. Compared the normalized temperature parameters with the soil moisture, the result showed that among the temperature parameters, the correlation between the vertical temperature difference and soil moisture was the best. The correlation coefficient between the temperature parameters and soil moisture increased with the increase of time scale. In each soil depth, the temperature difference was better correlated with the soil moisture of 4 cm depth. In the air temperature interpolation, the air temperatures estimated by latitude and altitude was closer to the measured values. On the regional scale, normalized vertical temperature difference could effectively solve the influence of geographical and the underlying surface, and could well monitor the change of soil moisture on month scale.

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