COMPARISON BETWEEN SOIL PROPERTY AND ASTER DATA IN MONGOLIAN GRASSLAND
スポンサーリンク
概要
- 論文の詳細を見る
The influence of soil condition in remote sensing data have not been clearly explained. Therefore, it is important to study the relationship between ground survey data and remote sensing data. Ground survey on soil condition such as topography, soil moisture, soil color and soil particle size were carried out in Mandal-GOBI, Mongolia on every August 1998 to 2002. The test area was covered by thin grass, the coverage ranges from 12% to 28%.<BR>Topographic survey was used kinematic GPS. Soil moisture was measured in 3cm depth by four-pin prove sensor. The measurement on ground surface was very difficult. Measured soil moisture ratio indicated 0.05 to 0.20 and topography was no related to the soil moisture. Soil color was measured by HSI value in digital camera images. The result showed soil color was almost same condition. Therefore, soil moisture and soil color was disregard in this study. Soil particle size was also measured by the digital camera images. Visual interpretation of the images was carried out to classify five categories of soil particle size.<BR>In this study, TERRA ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) image was compared with soil particle size. Firstly, ASTER image was geometrically rectified with topographic data by image matching. And topographic influence of the ASTER image was removed by logarithmic residuals method. The digital number in band 7 and band 8 had tendency to drop with large soil particle size. The digital number in Band 9 had tendency to rise with large soil particle size. Those tendencies were noticeable results in vegetated area. Therefore, vegetation condition should be discussed to understand the results.
- 社団法人 日本写真測量学会の論文
社団法人 日本写真測量学会 | 論文
- Landform monitoring of Tottori Sand Dune using aerial photographs.
- One Projector-One Camera System on Short Range Photogrammetry
- タイトル無し
- A Study on Environmental Evaluation Method Using the Satellite Image-Radiation quantity adjustment of multi-temporal data-.:-Radiation quantity adjustment of multi-temporal data-
- タイトル無し