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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhu, YuanJun Wang, YunQiang Shao, MingAn |
| Copyright Year | 2010 |
| Abstract | How to determine surface soil water content (SWC) quickly and accurately is fundamental in studying eco-hydrological processes and their modeling. Here we use laboratory experiments to determine surface SWC using soil surface gray level (SGL) values. A negatively exponential relationship exists between SGL and SWC, i.e., SGL increases with the decrease of SWC. SGL can be estimated based on initial SGL value (surface gray level when SWC=0), SWC, and a surface roughness coefficient characterized by mean soil particle size. The variation range of SGL was larger than that of SWC, indicating that changes in SWC were enhanced in SGL, and that SGL would thus be sensitive to changes in soil water. At the 95% confidence level, SWC can be determined by using the relationship between SWC and SGL established by the experiments. The determination of SWC has a high precision when SWC was between dry and saturated. |
| Starting Page | 1527 |
| Ending Page | 1532 |
| Page Count | 6 |
| File Format | |
| ISSN | 16747313 |
| Journal | Science in China Series D: Earth Sciences |
| Volume Number | 53 |
| Issue Number | 10 |
| e-ISSN | 18691897 |
| Language | English |
| Publisher | SP Science China Press |
| Publisher Date | 2010-09-01 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Loess Plateau soil water remote sensing surface roughness Earth Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences |
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