Reflection Model for Soil Moisture Measurement Using Near-infrared Reflection Sensor

DOI

10.2991/ifeesm-15.2015.158How to use a DOI?

Keywords

Reflection, Model, Near-infrared, Soil moisture

Abstract

Surface soil moisture is a significant parameter in environmental systems. A new sensor capable of estimating surface soil moisture from reflection data is presented, called near-infrared reflection sensor. Relative reflectance method is used for prediction model development. The present study investigated the reflection variations in four soil samples with a wide range of soil properties. The results showed that quadratic models were constructed between relative reflectance and soil moisture with of 0.902, 0.865, 0.955, and 0.953. The of all combined soils model is 0.886. Compared with individual quadratic models for each soil sample, all combined soils quadratic model generated prediction accuracy with values of root mean square error (RMSE= 2.43%, 3.34%, 5.21% and 2.99%). Soil moisture estimation is largely improved when the quadratic model are developed individually on each soil type except for the Soil 4, compared with all combined soils model. Individual quadratic model yielded performances very similar to the individual linear relationship. Therefore, it is feasible to construct a single quadratic model to minimize that factor effecting on reflection. The most important meaning of this study is that surface soil moisture can be rapidly and accurately measured by near-infrared reflection sensor. In the future, the prediction models can therefore provide quick assessment of surface soil moisture directly in the field.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhe Yin
AU  - Wei Qin
AU  - Changqing Zuo
AU  - Nan Yan
AU  - Bai Li
AU  - Qiankun Guo
AU  - Zhijie Shan
AU  - Zhaoyan Wang
PY  - 2015/09
DA  - 2015/09
TI  - Reflection Model for Soil Moisture Measurement Using Near-infrared Reflection Sensor
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 854
EP  - 860
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.158
DO  - 10.2991/ifeesm-15.2015.158
ID  - Yin2015/09
ER  -