Using infrared thermometry to estimate soil water content for a sandy soil

被引：0

作者：

Myhre, B.E. ^{[1
]}

Shih, S.F. ^{[1
]}

机构：

[1] Univ of Florida, Gainesville, United States

来源：

Transactions of the American Society of Agricultural Engineers | 1990年 / 33卷 / 05期

关键词：

Atmospheric Temperature - Infrared Radiation - Soils--Temperature Measurement - Thermometers;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The objective of this research was to develop a technique to estimate soil water content from surface-minus-air temperature measurements obtained from an infrared thermometer. Two different surfaces were used: grass (clipped, Pensacola Bahiagrass) and bare soil surfaces. Soil water content was estimated to depths of 0.15, 0.30, 0.60, and 0.90 m from surface-minus-air temperature measurements with average coefficients of determination (r2/R2) of 0.62, 0.61, 0.63, and 0.60. However, to depths of 0.60 and 0.90 m this estimate was improved by using a ratio of surface-minus-air temperature measurements divided by solar radiation. A dimensionless temperature ratio, which used soil/plant surface-minus-air temperature divided by ambient air temperature was also used to estimate soil water content at different depths.

引用

页码：1479 / 1486