gully erosion has an important role in fars province due to sediment production and enormous damages to land, roads and infrastructures. in this research, 15 gullies were selected to measure their morphometric characteristics. the length, depth, top and bottom width and volume of gully erosion were then measured. influential factors on the sediment production and gully development were analyzed...

The tall-grass prairies, wetlands and forests that dominated the Iowa landscape have been replaced by annual row-crops and grass pastures that occupy more than 90 % of the landscape today. Because of these changes water reaches the streams and gullies much faster and has led to incised streams and an extensive growth of gully networks. Stream and gully banks are major contributors of the nonpoi...

The gully erosion presents spectral and spatial heterogeneity and altimetry variation. It is not a land use class, but an object and it can be mapped as a subclass, using OBIA. This study presents a methodology for delimitation of gullies in rural environments, based on image classification procedures. For such, two study areas were selected: one located in Minas Gerais, Brazil and another one ...

Alluvial gully erosion is a likely key sediment source into many large rivers in tropical Australia. This type of gullying differs fundamentally to the generally accepted gully model from Southern Australia, in that it is found exclusively within alluvium and can propagate entirely as a result of basal sapping. The process is found to varying degrees within alluvial river types along most Gulf ...

This article describes the sampling design, survey methodology and findings of a natural resources survey conducted in the Rathbun Lake Watershed in Southern Iowa in 1999-2000. The goal of the survey was to quantify the erosion from all sources on agricultural lands and the ecological health of streams for each of 61 subwatersheds in the area. A total of 183 plots of approximately 160 acres in ...