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Soil classification in the Naban River Watershed National Nature Reserve (Paperback)
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Soil classification in the Naban River Watershed National Nature Reserve (Paperback)
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Document from the year 2010 in the subject Geography / Earth
Science - Geology, Mineralogy, Soil Science, grade: -, Dresden
Technical University (Institute of Soil Science and Site Ecology),
course: -, language: English, abstract: Soil properties are not
only influenced by geographical factors, such as parent material,
location and latitude. Often differences in land uses (forest,
rubber plantation, paddy field, bare land) are known to have
specific effects on soil properties. In the context of the project
Living Landscapes China (LILAC) these effects were evaluated and
the characteristics of soil types under changing conditions in two
transects (altitude and parent material in transect 1, land uses in
transect 2) in the Naban River Watershed National Nature Reserve
were classified. We used field investigations to classify the soil
types, as well as laboratory analyses to quantify specific
characteristics in samples, taken from the profiles. Soil physical
(bulk density, water content, texture) and chemical parameters
(total contents of carbon, nitrogen and macro nutrients, ECEC) were
investigated. While differences in altitude did not seem to have
profound influences on the soils, effects of land uses were
pronounced especially in the first 10 to 20 cm of soil profiles.
Soils under forests contain between 1.3 % - 2 % SOC and 0.15 % -
0.17 % TN in the Ah horizon. With contents of 1.2 % SOC and 0.11 %
TN (Ah horizon) the profile under agricultural use (paddy rice)
clearly contains less SOC and TN than the forest profiles.
Fertilization also seemed to have an influence resulting in higher
contents of Ca (6 - 12 times) and Mg (up to 4 times) for the
topsoil as well as a higher effective CEC (7.9 - 9.3 cmolc/kg) for
subsoil horizons of the paddy field compared to forest and rubber
sites. The profile under bare land (transect 1) showed higher
leaching of nutrients due to the missing soil cover. Thus, Al and
Fe contents were enriched, while the effective CEC (5.1 cmolc/kg
General
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