Hydrological classification of soils along toposequences

East African Journal of Sciences

Therefore, they are able to support a much more diverse plant and animal community. The study revealed the existence of three different soil orders along the toposequences in an area that was previously mapped as Eutric Nitosols. Description The word pocosin comes from the Algonquin Native American word for "swamp on a hill.

The study demonstrates that this whole ecosystem has been placed into disequilibrium thereby developing severe land degradation problems as a result of rising saline sulfatic ground watertables and perched watertables due to land-clearing since European settlement.

This process is important to help maintain healthy fish populations important to both commerce and recreation. As more and more land is developed in the Hydrological classification of soils along toposequences United States, pocosins are becoming ever more valuable refuges for wildlife.

This detail survey and classification of soils shows that topography has a great influence on soil development and characteristics. The Sweet Pitcher Plant Sarracenia rubra is one of the carnivorous plants found in pocosins. Pocosins provide large tracks of undisturbed land needed by Black Bears Ursus americanus.

As a result, bogs are low in the nutrients needed for plant growth, a condition that is enhanced by acid forming peat mosses. The most common plants are evergreen trees Loblolly Bay, Red Bay and Sweet Bayand evergreen shrubs titi, fetterbush and zenobia.

They may have either considerable amounts of open water surrounded by floating vegetation or vegetation may have completely filled the lake terrestrialization. The same organic matter also acidifies the water.

There are two primary ways that a bog can develop: They range in size from less than an acre to several thousand acres located between and isolated from old or existing stream systems in most instances. This Eastern Mud Salamander Pseudotriton montanus is resting on sphagnum moss.

Bogs support some of the most interesting plants in the United States like the carnivorous Sundew and provide habitat to animals threatened by human encroachment. This leads over time to salt accumulation at a shallow depth.

The opposite occurred along the colluvial slopes, with salinity increasing sharply downslope. It may be appropriate to replace blanket crop management recommendations in rainfed areas with toposequence-specific management recommendations. Characterization and Classification of Soils along the Toposequence of Kindo Koye Watershed in Southern Ethiopia D Mulugeta, B Sheleme Abstract In developing countries, where research funds are limited, the availability of pedogenic information and proper classification of soils will be of great importance.

When this happens, the fen receives fewer nutrients and may become a bog. Their acreage declined historically as they were drained to be used as cropland and mined for their peat, which was used as a fuel and a soil conditioner.

As well, it may be used by land and water supply managers to develop more efficient management strategies under conditions of increasing land degradation e.

As a result, they are a haven for species adapted to living in unaltered forests. Previous article in issue. The morphological and physiochemical properties of seven pedons located at the upper, middle and lower slopes of the two toposequences and at the depression were studied.

The soils of Kindo Koye watershed were fully characterized along east and west facing toposequences that formed a catena and classified according to the Soil Taxonomy and the WRB Legend to assess the impact of topography on soil development and characteristics.

Over time, many feet of acidic peat deposits build up in bogs of either origin. The pedons on the upper and middle slopes of both east and west-facing toposequences and the pedon on the east-facing lower slope were categorized under Ultisols, whereas the pedons on the foot slope west-facing and the depression were categorized under Inceptisols and Entisols, respectively.

These systems are often covered by grasses, sedges, rushes and wildflowers. Some pocosins are very large and difficult to develop, and so they remain largely undisturbed.

Unlike the rest of the United States, Alaska still has most of its wetlands. The hypothesis that toposequence position would be a useful recommendation domain for weed control and fertilizer recommendations was not supported by our statistical results.

Rocky areas have limited infiltration, thus yielding high runoff rates into adjoining soil-covered areas, and contribute to water concentration, deeper infiltration and leaching intensity.

Classification and Types of Wetlands

These small differences in elevation can lead to differentiation in soil properties and hydrological conditions, which in turn may affect crop performance and yield.

Fens, like bogs, are peatlands, but because they are fed by groundwater they are not so acidic as bogs. Status of Bogs Bogs in the United States are mostly found in the glaciated northeast and Great Lakes regions northern bogs but also in the southeast pocosins.

The landscape selected is undergoing severe soil degradation i. Some fens are characterized by parallel ridges of vegetation separated by less productive hollows.

Recently, bogs have been recognized for their role in regulating the global climate by storing large amounts of carbon in peat deposits.HYDROLOGIC PROPERTIES OF FINAL COVER SOILS FROM THE ALTERNATIVE COVER ASSESSMENT PROGRAM by Tayfun Gurdal and Craig H.

Benson University of Wisconsin-Madison and William H.

Albright Desert Research Institute Geo Engineering Report No. Chapter 7 Hydrologic Soil Groups Introduction This chapter defines four hydrologic soil groups, or HSGs, that, along with land use, management prac-tices, and hydrologic conditions, determine a soil's associated runoff curve number (NEH).

Runoff. characterization and classification of soil of Oba are relatively scarce. Therefore, the purpose of the study is to characterize, classify soils along. full-text paper (pdf): characterization, classification and evaluation of soil and water resources across the toposequences of southern saurashtra.

The constructed conceptual soil-water-landscape model is the result of detailed pedo-hydrological investigations along toposequences in a representative subcatchment in the high rainfall zone (> mm) of the Mount Lofty Ranges, South Australia. along two toposequences, one under forest (F) and the other under pasture (P), and to verify how the change in land use influences soil attributes, evaluating their inclusion in .

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Hydrological classification of soils along toposequences
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