Again, a SHC was prepared using soil structure, subsurface compaction, aggregate stability, status of ground cover, soil smell, soil pH, color, organic matter content, drainage capacity, diversity of micro-life, earthworm contents, infiltration rate, soil aeration, crop coverage and leaf color.
Because rainfall is unreliable, with periods of drought and flooding, large storage reservoirs are needed to ensure water supply and to provide high-capacity drainage of storm water.
These are geology (lithology), fault density, distance to fault, relative permeability of lithologies, elevation, slope aspect, slope steepness, curvature, plan curvature, profile curvature, topographic wetness index, stream power index, sediment transport capacity index, drainage density, distance to drainage, land use/cover, and precipitation.
It also assist evaluation of storage capacity of drainage network and hence, a determinant of critical degree of drainage development in a given watershed (Horton 1945).
The objective of the study was to examine the capacity of drainage ditches across the LMAV to sorb P. Spatially and temporally, all drainage ditch sediments had very low immediately bioavailable phosphorus (Pw), and a very low degree of phosphorus saturation (DPS < 20%) throughout the LMAV.
bedrock nature, infiltration capacity, runoff, drainage density, etc.
However, the severity of drought depends on the land types of particular region, their soil texture and moisture holding capacity, permeability, drainage and number of dry days etc. Apart from drought and flood, a few other constraints: salinity, alkaline and acid sulphate soils hamper rice cultivation and expansion in Bangladesh (Fig. 12d and Additional file 3: Figure S3).
Implementation of family medicine in Africa faces many challenges; for example, poverty, limited funding, focusing on hospital care, poor training capacity, and drainage of doctors towards rich or more developed countries [ 10].
On the other hand, by reducing the storage capacity of drainage systems this erosion can contribute to severe flooding, loss of human life and serious economic losses (FAO, 1999g), and it may be impossible to restore eroded slopes to their original vegetation.
