| Spatial variability of micro topography in the loess slope land |
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| DOI：10.7606/j.issn.1000-7601.2011.01.26 |
| Key Words: semi-variogram spatial variability micro-topography loess area |
| Author Name | Affiliation | | ZHAO Longshan | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | SONG Xiangyang | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Qingfeng | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | WU Faqi | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| The semi-variance methodology is applied to analyze the spatial variability characteristics of field surface relative elevation (SRE) under different types of tillage measures like artificial hoeing, contour tillage and artificial digging in loess slope land. The results indicated that: (1) The degree of spatial correlation of different types of tillage practice was contour tillage＜artificial digging＜artificial hoeing. (2) Soil surface microrelief had the self-similar features to the slope with hoeing and that with digging in the aspects of different directions, while to the slope with contour tillage, it had self-similar features in the parallel to slope and had self-affine features in the vertical to slope, and spherical interpolation model could be used to simulate the spitial distribution features of micro-topography in the loess slope land. |
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