|1. Contact Person||Soil Erosion Network - Experiment|
|1.1 Name||Dr Ion Ionita|
for Soil Erosion Control
6400 Perieni - Barlad
|1.3 Tel||+40 35 413770|
|1.4 Fax||+40 35 412837|
|1.6 Other researchers involved in the survey||Gabriel
|2. Water erosion|
|2.1. mm2 - cm2 Dynamics of soil aggregation|
|2.2. m2 : soil surface dynamic|
runoff plot (100 - 150m2 )
*interill and rill erosion
* discontinuous gully erosion
*continuous gully erosion
|2.6. Other processes investigated||Siltation rates along discontinuous gully floor and on small reservoirs|
|3. Wind Erosion|
|4. Mass Movements|
|5. Tillage Erosion|
|5.1 Water erosion:|
|5.2 Wind erosion:|
|5.3 Hydrology: .|
|5.5 Plant growth:|
|6.Temporal Scale of Experiments|
data collection varied depending on meteorological events.
Annualy, there have been occurred 3-4 rainfalls that induced runoff under plots and/or temporary streamflows in studied catchments.
Freeze-thaw cycle has a significant contribution on sediment delivery by increased gullying, mostly.
|7 Description of Erosion Factors|
H I15 index, where H is the hight or ammount of single rain.
|7.2 Topography||Slope Length|
|7.3 Soils||Some physical and chemical features|
|7.4 Vegetation||Cover and type|
|7.5 Management||Tillage and conservation practices|
|7.6 Others||Hydrological response of small catchments|
|8. Field Experiments|
|8.1 Erosion Processes|
measurements on water and soil losses have been conducted for almost
30 years at Perieni - Barlad, Eastern Romania. Several plots are used,
all with a cropping history, fully instrumented for measuring runoff.
Two check plots are used as permanent fallow. Others are cultivated
with corn, winter wheat, dry beans, bromegrass.
The plots are laying out on loamy textured mollisoil.
Six plots are 25m by 4m (100m2) and two 37.5m by 4m (150m2). The site has an average slope of 12% and it is westlooking
gullies were monitored in the neighbourhood of Barlad city, Moldavian
Long - term repeated survey has been used since late '70s to identify the gully extension. It is consisting of a particular "close stakes grid" method mixed with surveying by optical theodolite.
To determine siltation rates along gully floor since '80s the automatic leveling measurements on some cross-sections using "iron sheet monuments" as check point have been carried out. In addition, use of Caesium -137 as a tracer of sedimentation was performed after 1996.
sites have been selected to identify the gullying trend over the period
1960-1990 by means of air photographs and stationary levelling.
Since 1980 detailed measurements by a particular "close stakes grid" method mixed with topographic survey were focused on six gullies to establish long-term erosion rates. Those monitored catchments are underlain by wooden soils, developed on deep sandy-clayey Pliocene layers. Cropland is primarly land-use.
|Since 1996 several sites were selected for sampling recent alluvium and determining depth distribution of Caesium-137|
|8.2 Location (town, state, country)||Barlad City, Moldavian Plateau, Romania|
|8.3 Equipment Involved|
|- runoff plots and collecting tanks with multislot divisory|
Theodolite 020 A and B
- Automatic level AW-30
Automatic levels AW-30
- Canbera Ge HP Detector-GC 1518 type for Caesium-137 activity
- Eijkelkamp hand auger equipment
|Automatic ISCO sediment sampler to determine turbidity in temporary streamflows from representative catchments.|
|9. Laboratory Experiments||-
Physical and chemical soil analysis such as pH-test, organic-matter,
nutrients, particle-size distribution, bulk density, etc.
- Hydrologic characteristics of monitored streamflows
- Geomorphological computations and mapping
- PC Software as Surfer for Windows, MapViewer, Grapher, Didger, Microsoft Office for Windows
|11. List Relevant Publications|
|12.1 Scientific Documentation|
|12.2 User's guide|
|12.3 Technical Documentation|
|14 Other Relevant Information|