1
Contact person |
|
1.1
Name |
n.
Hab.dr. B. Jankauskas |
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1.2
Address |
Kaltinenai
Research Station, LT 5926, Kaltinenai, Distr. Silale, Lithuania. |
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1.3
Tel |
+370
69 57254 |
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1.4
Fax |
+370
69 572242 |
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1.5
Email |
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|
1.6
Other researchers involved: |
G.
Jankauskiene |
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2
Survey Details |
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2.1
Dates of erosion monitoring survey: |
1994-2000-2007
and might be continued. |
|
2.1
Water/wind erosion? |
Water |
|
2.3
Area monitored: |
Western
Lithuania. Southern part of -emai-iai upland. Distr. Silale.
Villages f: U-pelkiai (no 1), Milai-iai (no 2), Rezgaliai (no
3). |
|
2.4
Character of area: |
Hilly
- rolling relief; eroded arable land. Uniform slopes: no 1 -
loamy soil, no 2 - sandy soil, no 3 - clay soil; cool - humid
temperate oceanic - continental climate. |
|
2.5
Frequency of monitoring: |
a)
liquid overland flow depending on rainfall, b) soil removed
(solid flow) depending on rainfall (downpour) frequency, c)
subsoil flow by field lysimeter (planned), d) agrophysical and
agrochemical features every six year period. |
|
2.6
What fraction of fields in the monitored area were included
in the survey? |
Only
slopes |
|
2.7
How were estimates of erosion made? |
a)
liquid flow and soil removed (solid flow) by stationary collectors,
b) solid flow by stationary collectors, bymeasurement of volume
rills and by network of bench marks, c) by analysis of soil
samples, liquid flow samples and solid flow samples. |
|
2.8
Were air photographs used? |
Not
available. |
|
2.9
For each erosion site, information recorded: |
|
|
|
Location:
South slopes (no 1, no 2 and no 3).
Contributing area: no 1 - 0.5 ha (10 sites at 0.027 ha each),
no 2 - 0.035 ha (10 sites at 0.0292 ha each), no 3 - 0.5 ha
(10 sites at 0.0225 ha each).
Slope length: no 1 - 60 m, no 2 - 65 m and no 3 - 50 m.
Gradient: no 1 - 7-9, no 2 - 9-11 and no 3 - 7-9 degrees.
Slopes shape - convex at all sites.
Erosion form - water erosion from slopes.
Volume soil moved - t, m3, lowed of soil surface
- mm.
Crop type: 16 sites under field crop rotation with bare (black)
fallow*, 6 sites under usual field crop rotation*, 6 sites under
grain - grass crop rotation*, 6 sites under grass - grain crop
rotation*, 3 sites under hayland (grass fallow), and 3 sites
under non-employed grass fallow (lea land).
Soil type: soddy podzolic.
Management factor - usual management and fertilization for each
of crops. |
|
2.10
Data obtained from elsewhere: |
Rainfall
and water of snow thawing responsible for erosion. Some soil
removed (solid flow) and liquid flow samples taken and analysed. |
|
2.11
Data calculated from above information: |
Erosion
rate m3/ha and t/ha according to dry bulk density
of soil. |
|
2.12
Meterological station density and type: |
Post
of measurement of volume of precipitations (rain gauge) c. 2
km frfrom area no 1, 2.5 km from area no 2 and 3.5 km from area
no 3, and Meteorological Station c. 14-17 km from all areas. |
|
2.13
Length of record of meterological data: |
Rain
gauge post from 1976. Meteorological station from 1925. |
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3.
Associated Work |
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3.1
Associated experimental or plot-based work: |
Analysis
of liquid flow samples in Agrochemical Analysis Centre. |
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3.2
Associated modelling work: |
None |
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4.
Documentation |
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4.1
Published reports of the monitoring survey and/or results: |
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None,
because 1995 is second year of research. |
|
|
4.2
Other relevant publications: |
|
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5.
Availability |
|
5.1
Erosion/land use data: |
On
request subject to GCTE policy. |
|
5.2
Meterological data: |
At
request. |
6.
Other Information |
|
6.1
Is the monitoring survey ongoing? |
No |
|
6.2
Funding agency for the survey: |
Lithuanian
Agriculture Institute. |
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6.3
Any other details: |
Crop
rotations:
Field
with bare fallow: Field usual:
1. Winter
grains**1. Winter grains
2. Potatoes2. Potatoes
3. Barley3. Barley
4. C+T I y.u.4. Barley
5. Barley5. C+T I y.u.
6. Bare fallow6. C+T II y.u.
Grain
- grass: Grass - grain:
1. Winter
grains1. Winter grains
2. Barley2. Barley
3. Barley3. O+F I y.u.
4. Barley4. O+F II y.u.
5. C+T I y.u.5. O+F III y.u.
6. C+T II y.u.6. O+F IV y.u.
|
|
** Winter
wheat - no 1 and no 3, rye - no 2.
C+T - Clover + Timothy, O+F - Orchard grass + Fescue grass.
y.u. - year of use.
Project might be changed or added (supplemented) according
to wishes of GCTE.
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