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Saturday, July 25, 2020 | History

2 edition of Soil erosion types and their distribution in Machakos District found in the catalog.

Soil erosion types and their distribution in Machakos District

E. K. Wahome

Soil erosion types and their distribution in Machakos District

by E. K. Wahome

  • 286 Want to read
  • 39 Currently reading

Published by Kenya Rangeland Ecological Monitoring Unit, Ministry of Planning and National Development in Nairobi .
Written in English

    Places:
  • Kenya,
  • Machakos (District)
    • Subjects:
    • Soil erosion -- Kenya -- Machakos (District) -- Classification.

    • Edition Notes

      StatementE.K. Wahome.
      SeriesTechnical report ;, no. 126, Technical report series (Kenya. Rangeland Ecological Monitoring Unit) ;, no. 126.
      Classifications
      LC ClassificationsS625.K4 W34 1986
      The Physical Object
      Pagination18 p. :
      Number of Pages18
      ID Numbers
      Open LibraryOL2524686M
      LC Control Number87981078

        The types of soil and land degradation often found in Kenya are soil erosion, increased sediment loading of water bodies, such as Lake Olbollosat, the Winam Gulf and lake Baringo, loss of soil fertility, salinity, reduced ground cover, and the reduced carrying capacity of pastures, such as Amboseli National Park (FAO n.d).Cited by: 4. concerning soil erosion and productivity (soil nutrient amounts and related assessments) and their variability within the zones. Other information to be collected included the following: 1. Soil erosion indicators and their qualitative or quantitative assessments (see Annex 1). 2. Information on land use history using a standard Size: 1MB.

      The soil types in the country vary from place to place due to topography, amount of rainfall and parent material. In western Kenya the soils are mainly; Acrisols, Cambisols [5] and their mixtures, are highly weathered, leached and with high accumulation of Iron and Aluminum by: 1. Loamy Soil is the mixture of clay, sand, and silt soil which consists of additional organic matter and very fertile compared to other types of soil. It is well suited for cultivation as the plant roots get a sufficient amount of water and nutrients for their growth and development.

      reference soil groups are represented and with the aid of new distribution maps the regional abundance of WRB groups in South Africa can approximately be assessed. Key Words Soil classification, soil maps, diagnostic horizon, soil resources Introduction The only comprehensive account of the soils of South Africa is that by Van der Merwe (). The. Although the process of soil erosion is imperceptibly slow and it can scarcely be detected, the loss over periods of time is indeed very great. Types of Soil Erosion: Two natural agents i.e., water and wind, are constantly at work indulging in soil erosion. Therefore, we can talk of two types of soil erosion viz., water erosion and wind erosion. 1.


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Soil erosion types and their distribution in Machakos District by E. K. Wahome Download PDF EPUB FB2

This map displays the spatial distribution of the landscape units and their soil profiles, composed of the functional horizons. In the accompanying database the specific soil characteristics are stored and available for querying.

This study, has improved the understanding of the soil variability and landscape in the Machakos district, Kenya. Buy Soil Erosion, Conservation, and Rehabilitation (Books in Soils, Plants, and the Environment) on FREE SHIPPING on qualified ordersCited by: Kathekakai settlement scheme, Machakos district, lies at the end of agro-ecological zone 4 and 5 in Kenya.

The soil type, is predominantly luvisols (brown, sandy clay to reddish brown sandy clay to clay), with low inherent fertility leading to low crop and livestock production. The area experiences irregular bimodal (short and long) type.

Soil and Water Conservation in Kenya Bibliography with Annotations by Gichuki Karanja and - Erosion types, causes and distribution. - Erosion survey, monitoring, prediction and soil loss estimation.

This report is an evaluation of a tree nursery in Machakos district, sponsored by SIDA soil conservation in Kenya. The paper examines the. Using data from a household survey in Machakos and Kitui districts in Kenya, the factors that influence the rates of return in soil conservation are examined.

A Cobb-Douglass regression. Again, severe soil erosion in the mid-catchment, particularly within the agricultural Machakos district, dates back to the s (Tiffen et al., ), Soil erosion types and their distribution in Machakos District book has been linked to the felling of.

Types of Soil Erosion Rain drop or splash erosion: Erosion preceded by the destruction of the crumb structure due to the impact of falling raindrop on the surface of soil is termed as splash erosion.

Sheet erosion: It is the fairly uniform removal of soil in thin layers from the land surface, often scarcely perceptible, especially when caused by wind. Soil texture is the size distribution of soil particles. The size of particles never changes. A sandy soil, therefore, remains sandy and a clayey soil remains clayey.

The three main particles are sand, silt and clay. The more sandy a soil the easier it will erode. Soil structure The term soil structure means the grouping or arrangement of soil.

There are five main types of soil in Kenya: 1. Loamy Soils Loam soil is primarily a mixture of clay and sand soil. In Kenya, loamy soil is majorly found in Western Kenya and parts of the Rift Valley. Characteristics of loam soils: i) Usually very fertile.

ii) Well drained. This book focuses on the process of soil erosion and erosion-control principles independent of land use. Coverage includes the primary factors that influence soil erosion, various types of erosion, erosion-prediction technology, erosion measurements, erosion and sediment control, and conservation of the s: 1.

Soil erosion by water is serious global problem. In Africa, about 5 Mg ha −1 of productive topsoil is lost to lakes and oceans each year. This study was conducted at the Kianjuki catchment in central Kenya to predict annual soil loss using the Revised Universal Soil Loss Equation (RUSLE Version ) to determine the erosion hazard in the area and target locations for appropriate Cited by: Runoff and soil erosion under different land use and cover types in a marginal area of Portugal: comparison among cereal crop (traditional land use), fallow land (traditional land use or short-term abandonment), shrub land (long-term abandonment), recovering oak (very long-term abandonment), afforested land (conversion of arable land to forest) and pastureland Cited by: The Machakos District was a net importer of maize for 14 of the years between and for which data are available, and for 8 of the years from to (Mbogoh ).

The ever-present need for food relief has been variously attributed to overpopulation and environmental degradation, to colonization and development, or to insufficient. Introduction. The soil is one of the important resources of our country, as the fertile soil helps us in producing many serves the food requirements not only within the country but also in other parts of the gh it is not the same at every place on the types of soil of a place are determined by climate, landscape, and vegetation of that place.

Major soil types The soils of South Africa have been classified using a hierarchical system (Soil Classification Working Group ), and include a large number of soil bodies which range from soil bodies black, smectitic clay on dolerite to yellow, kaolinitic clay on Beaufort sediments.

TheFile Size: KB. less soil than sheet and rill erosion. Gullies occur when smaller water flows concentrate and cut a channel through the soil. Most gullies extend Fact sheet 1: Types of erosion Helping North Coast landholders reduce soil erosion.

Rainfall, and the surface runoff which may result from rainfall, produces four main types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.

Splash erosion is generally seen as the first and least severe stage in the soil erosion process, which is followed by sheet erosion, then rill erosion and finally gully erosion (the most severe of the four). An example of the composition of a soil association forming a soil mapping unit is given in Figure 4.

Each soil type occurring in each soil mapping unit is characterized in terms of its land characteristics and qualities (Box 3), which relate to the edaphic requirements of plants or to land-use requirements for management or conservation.

Get this from a library. Environmental change and dryland management in Machakos District, Kenya, Environmental profile. [Michael Mortimore;]. The history of settlement, land use, and environment () Table Estimated annual soil-erosion losses a from Machakos area soils under different land while planting new fruit and timber and fencing trees on their own farms.

The national- and district-scale sectoral focus on energy also masked the multiple uses and values of. the soil causing capping/hard pan which encourages run off and interferes with crop emergence; • Ridging: moving soil backward and forward each year.

Ridges are split each year and new ridges made in the previous furrow. If ridges are not made on the contour, erosion gullies formFile Size: KB. Soil erosion is a critical environmental problem throughout the world’s terrestrial ecosystems.

Erosion inflicts multiple, serious damages in managed ecosystems such as crops, pastures, or forests as well as in natural ecosystems. In particular, erosion reduces the water-holding capacity because of rapid water runoff, and reduces soil organic by: Water management in Soil and Water Conservation Programs are gaining recognition in the World.

In Kenya, up to s the emphasis was on soil erosion control, by use of structural measures to convey and discharge runoff from agricultural land. However, Soil and Water Conservation (SWC) is now being recognized as a land husbandry.