The usefulness of the parameters (e.g., slope, aspect) derived from a Digital Elevation Model (DEM) is limited by its accuracy. In this paper, thematic-like quality control (class-based) aspect and slope classes proposed. A product can be compared against reference dataset, which provides requirements to achieved, comparing proportions each class with those set. If distance between smaller than...

the study was carried out to investigate the effective soil and topographic features on distribution of plant types in sanib taftan watershed in sistan-and-balouchestan province, iran. initially, land units map was specified by combining three maps of slope, aspect and altitude. five types including artemisia santolina- hammada salicornica, artemisia sieberi- amygdalus lycioides, artemisia lehm...

This study takes multitemporal Landsat images as data source to explore the changes of Fractional Vegetation Cover (FVC) and ecological quality (EQ) Wugong Mountain (WGM). The regression model obtained from MODIS NDVI was used correct temporal difference normalized vegetation index (NDVI) in 2019, Remote Sensing based Ecological Index (RSEI) calculated assess change FVC EQ WGM. Results showed t...

The aerodynamics characteristics of a blended-wing body (BWB) aircraft were obtained in Universiti Teknologi MARA low speed wind tunnel. The scaled-down of BWB model consisted of a canard as its horizontal stabilizer. There were four canards with different aspect ratio used in the experiments. Canard setting angles were varied from -20 to 20 . All tests were conducted at velocity of 35 m/s, wit...

This paper presents an inverse analysis of the unobserved trigger factors with respect to the slope failures based on the Structural Equation Modeling (SEM). The quantitative prediction models generally construct the relationship between the past slope failures and the causal factors (i.e. lithology, soil, slope, aspect, etc.), but does not deal with the trigger factors(i.e. rail fall, earthqua...

Re-vegetation is an important practice for eco-environmental rebuilding of degraded environments. Accordingly, re-vegetation has been widely used to reduce erosion and protect soils against degradation in the Loess Plateau. However, little research has been conducted to study the effects of long-term re-vegetation on soil properties, which is essential to reveal corresponding changes in soil qu...