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Nutrient losses from agricultural sources in Latvia Country Report. Viesturs Jansons Latvia University of Agriculture. Diffuse pollution monitoring network in Latvia. Vienziemite Catchment Drainage. Berze - PowerPoint PPT Presentation
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Nutrient losses from agricultural sources in Latvia
Country Report Viesturs Jansons Latvia University of Agriculture
Diffuse pollution monitoring network in LatviaDiffuse pollution monitoring station BerzeCatchment DrainageMellupiteCatchment Drainage PlotsVienziemiteCatchment Drainage
SkriveriCatchment Plots
Monitoring system in Mellupte Demonstration Watershed Data loggers and flow proportional automatical water sampling in all measurement levelsCatchment station (measurements: river run-off, drainage plot run-off, surface run-off, weather conditions)Drainage field station (measurements: drainage field run-off)
Mellupite catchment stationWatershed monitoring Weather stationSurface run-off Crump weirSurface run-off plot15 drainage plots (0.12 ha)
Drainage field stationDrainage field 12 ha(surface and subsurface run-off)
Concentrations of N tot in run-off (1994-2001)Field drainage0,005,0010,0015,0020,0025,00Ntot mg/l19941995199619971998BerzeMellupite1999Vienziemite20002001Berze (blue line)C 7.2 mg/l CV 52% Dr 8.4 mg/l CV 41% Mellupite (green )C 2.9 mg/l CV 56% Dr 6.2 mg/l CV 35% Vienziemite (red)C 1.7 mg/l CV 68% Dr 1.8 mg/l CV 67% Average values
Nutrient run-off (Ntot) Berze C 10.4-21.4 kg/ha year Dr 10.8-26.8 kg/ha yearMellupite C 7.4-11.2 kg/ha year Dr 11.5-22.4 kg/ha yearVienziemite C 3.7-8.6 kg/ha year Dr 1.8-6.1 kg/ha year
Nutrient (Ntot) retention drainage c small catchmentCharacteristics of the small catchment's and drainage fields? size of the watershed flow regime (sustained ground water flow, surface run-off, drainage run-off)stream type (slope, shape, bed features) farming conditionsVienziemiteCatchment 590 ha Drainage 67 ha (surface and drainage run-off, grassland)MellupiteCatchment 960 ha Drainage 12 ha (surface and drainage run-off, arable land)BerzeCatchment 370 ha, arable land Drainage 77 ha drainage run-off, balanced fertilization)
Chart4
-58.1395348837199421.1538461538
-25.609756097698.765432098886.6666666667
-21.621621621661.971830985926.9005847953
-2075.892857142961.4457831325
-45.3488372093114.583333333363.2653061224
3.448275862183.1325301205-16.4021164021
-12.2448979592154.9857549858-14.2857142857
-15.873015873105.504587156-41.5887850467
-24.979184013398.328511732617.6759410802
Vienziemite
Mellupite
Berze
Ntot retention %
Lv
Nkop, kg ha-1 gad-1Pkop, kg ha-1 gad-1
19941995199619971998199920002001Vid19941995199619971998199920002001Vid
Vienziemite upes baseins4.38.23.77.58.65.84.95.046.00.130.120.040.090.140.150.090.170.12
Vienziemite drena1.86.12.964.764.34.244.50.690.070.030.070.090.110.070.140.16
Mellupte upes baseins8.17.111.29.68.37.0210.98.90.230.140.10.240.270.090.130.17
Mellupte drena16.111.519.720.615.217.922.417.60.20.120.110.770.220.10.130.24
Brze upes baseins10.410.517.116.614.718.912.621.415.30.480.410.520.230.270.190.120.280.31
Brze drena12.619.621.726.82415.810.812.518.00.40.230.230.130.150.110.060.140.18
Skrveri upes baseins24.924.90.330.33
Vecauce baseins (cku ferma)31.750.469.557.135.110,317.543.60.150.10.070.180.090,040.110.12
Ogre upes baseins (cku ferma)21.833.261.876.548.511,417.443.25.42.412.085.042.22,843.23.39
Bauska baseins (tikai difzais piesrojums.)9.79.338.139.31922,432.324.60.420.360.470.490.450,230.390.43
Bauska baseins (cku ferma)23.323.574.876.532.823,839.345.012.283.65.041.80,750.792.42
Bauska idrmslu iestrdanas lauks208.745.9239.4263.2101.292,490.5158.26.892.674.4811.25.32,543.755.72
50.4
85.0
Vid dif p.10.05619047620.2000595238
Lv
0
0
0
0
0
0
0
kg/ha N gad
Engl (3)
0
0
0
0
0
0
kg/ha P gad
Sheet1 (2)
0
0
0
0
0
kg/ha N gad
Discharge
Nkop, kg ha-1 gad-1Pkop, kg ha-1 gad-1
19941995199619971998199920002001Average19941995199619971998199920002001Vid
Vienziemite catchment4.38.23.77.58.65.84.95.046.0Vienziemite catchment0.130.120.040.090.140.150.090.170.1
Vienziemite drainage1.86.12.964.764.34.244.5Vienziemite drainage0.690.070.030.070.090.110.070.140.2
Mellupite catchment8.17.111.29.68.37.0210.98.9Mellupite catchment0.230.140.10.240.270.090.130.2
Mellupite drainage16.111.519.720.615.217.922.417.6Mellupite drainage0.20.120.110.770.220.10.130.2
Berze catchment10.410.517.116.614.718.912.621.415.3Berze catchment0.480.410.520.230.270.190.120.280.3
Berze drainage12.619.621.726.82415.810.812.518.0Berze drainage0.40.230.230.130.150.110.060.140.2
Skriveri24.924.9Skriveri0.330.3
Vecauce ferm catchment31.750.469.557.135.110,317.543.6Vecauce ferm catchment0.150.10.070.180.090,040.110.1
Ogre farm catchment21.833.261.876.548.511,417.443.2Ogre farm catchment5.42.412.085.042.22,843.23.4
Bauska farm catchment23.323.574.876.532.823,832.343.9Bauska farm catchment12.283.65.041.80,750.392.4
Bauska dumping firld208.745.9239.4263.2101.292,439.3149.6Bauska dumping firld6.892.674.4811.25.32,540.795.2
Bauska upes baseins (tikai difzais piesrojums.)9.79.338.139.31922,490.534.3Bauska upes baseins (tikai difzais piesrojums.)0.420.360.470.490.450,233.751.0
N retention
Vienziemite-58-26-22-20-453-12-16-24.98
Mellupite9962761158315510698.3285117326
Berze2187276163-16-14-4217.6759410802
Vidji Latvij difz piesrojuma baseinos (1994-2001. G.) 10.0 mg/l
hg/ha P gad
0
0
0
0
0
Vidji Latvij difz piesrojuma baseinos (1994-2001. G.) 0.20 mg/l
Discharge
0
0
0
0
0
0
0
0
0
0
0
kg/ha N gad
Sheet3
0
0
0
0
0
0
0
0
0
0
0
hg/ha P gad
6.005
4.505
8.8885714286
17.6285714286
15.275
17.975
N kg/ha
0.11625
0.15875
0.1714285714
0.2357142857
0.3125
0.18125
P kg/ha
0
0
0
0
0
0
0
0
0
0
High animal density areas
Diffuse pollution
Natural background
N kg/ha year-1
0.11625
0.15875
0.1714285714
0.2357142857
0.3125
0.18125
0.33
0.1166666667
3.3883333333
2.3516666667
Point source pollution
Diffuse pollution
Natural background
P kg/ha
19941994
8.116.1
7.111.5
11.219.7
9.620.6
8.315.2
7.0217.9
10.922.4
Mellupite catchment
Mellupite drainage
kg/ha
Nitrogen run-off
19941994
0.230.2
0.140.12
0.10.11
0.240.77
0.270.22
0.090.1
0.130.13
Mellupite catchment
Mellupite drainage
kg/ha
Phosphorus run-off
000
000
000
000
000
000
000
000
Vienziemite catchment
Mellupite catchment
Berze catchment
Ntot kg/ha
000
000
000
000
000
000
000
000
Vienziemite drainage
Mellupite drainage
Berze drainage
Ntot kg/ha
000
000
000
000
000
000
000
000
000
Vienziemite
Mellupite
Berze
Ntot retention %
Nkop, kg ha-1 gad-1Pkop, kg ha-1 gad-1
1994199519961997199819992000Vid1994199519961997199819992000Vid
Ekstensva raoana (Vienziemite)4.38.23.77.58.65.84.96.10.130.120.040.090.140.150.090.11
Vidjs raoanas lmenis (Mellupte)8.17.111.29.68.37.028.60.230.140.10.240.270.090.18
Intensva raoana (Brze)10.410.517.116.614.718.912.614.40.480.410.520.230.270.190.120.32
Slgta cku ferma (Ogre)21.833.261.876.548.511,448.45.42.412.085.042.22,843.43
Raojoa cku ferma (Bauska)23.323.574.876.532.823,846.212.283.65.041.80,752.74
Bauska novadgrvis ar idrmslu iestrdanas lauku208.745.9239.4263.2101.292,4171.76.892.674.4811.25.32,546.11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Difzais piesrojums
Koncentrtais piesrojums, lielfermas
kg N no ha gad
Q mm gad-1
1994199519961997199819992000Vid
Vienziemite427467126319418219325328.7
Vienziemite drena244452105214238322202253.9
Mellupite300175259328258153245.5
Mellupte drena350198280349223174262.3
Berze177201173182202197130180.3
Brze drena222310149212238152127201.4
Vecauce upes baseins (cku ferma)48.8
Ogre upes baseins (cku ferma)48.3
Bauska upes baseins (tikai difzais piesrojums.)23.1
Bauska upes baseins (cku ferma)46.2
Bauska idrmslu iestrdanas lauks.171.7
Piesrojuma dabiskais fons
000
000
000
000
000
000
Vienziemite
Mellupite
Berze
Discharge, mm
Nutrient run-off (Ntot) and acreage of arable crops, 1994-2001Agricultures contribution to non point source pollution varies widely as a complex function of land use, cropping system, soil type, climate, topography, hydrology, animal density and nutrient management techniquesSource: Position statement on Agricultural nutrient Management and Environment Quality. 2000. Soil Science Society of America.
Chart3
82.6086956522
82.3369565217
89.1304347826
83.6956521739
92.1195652174
91.3043478261
82.8804347826
80.7065217391
41.25
41.25
44.2708333333
48.3333333333
44.7916666667
41.7708333333
37.34375
5.0675675676
4.7297297297
3.7162162162
3.8851351351
4.3918918919
4.222972973
2.972972973
2.8040540541
Berze
Mellupite
Vienziemite
Catchments
N loss kg/ha year-1
Arable crops % of catchment area
y = 6,1x - 16,7R2 = 0,69
Sheet1 (2)
199419951996199719981999Vid199419951996199719981999Vid
Ekstensva raoana (Vienziemite)4.38.23.77.58.65.86.30.130.120.040.090.140.150.11
Vidjs raoanas lmenis (Mellupte)8.17.111.29.68.38.90.230.140.10.240.270.2
Intensva raoana (Brze)10.410.517.116.614.718.914.70.480.410.520.230.270.190.35
21.833.261.876.548.548.35.42.412.085.042.23.43
23.323.574.876.532.846.212.283.65.041.82.74
Bauska novadgrvis ar idrmslu iestrdanas lauku208.745.9239.4263.2101.2171.76.892.674.4811.25.36.11
Sheet1 (2)
0
0
0
0
0
0
Iznese
0
0
0
Bilance iznese
0
0
0
Bilance 1
0
0
0
0
0
0
Vid
kg N no ha gad
Melupite
0
0
0
0
0
Difzais piesrojums
Koncentrtais piesrojums, lielfermas
kg N no ha gad
Vienziemite
199419951996199719981999Vid199419951996199719981999Vid
Vienziemite upes baseins4.38.23.77.58.65.86.30.130.120.040.090.140.150.11
Vienziemite drena1.86.12.964.764.60.690.070.030.070.090.110.18
Mellupte upes baseins8.17.111.29.68.38.90.230.140.10.240.270.2
Mellupte drena16.111.519.720.615.216.60.20.120.110.770.220.28
Brze upes baseins10.410.517.116.614.718.914.70.480.410.520.230.270.190.35
Brze drena12.619.621.726.82415.820.10.40.230.230.130.150.110.21
31.750.469.557.135.148.80.150.10.070.180.090.08
21.833.261.876.548.548.35.42.412.085.042.23.43
9.79.338.139.31923.10.420.360.470.490.450.44
23.323.574.876.532.846.212.283.65.041.82.74
Bauska idrmslu iestrdanas lauks.208.745.9239.4263.2101.2171.76.892.674.4811.25.36.11
Piesrojuma dabiskais fons
Vienziemite
0
0
0
0
0
0
0
0
0
0
0
kg/ha N gad
Kopa vid
0
0
0
0
0
0
0
0
0
0
0
hg/ha P gad
Berze
0
0
0
0
0
0
kg/ha N gad
0
0
0
0
0
0
kg/ha P gad
Meslojums-razaKop bilance
1995199619971998199919941995199619971998199919951996199719981999
Vienziemite upes baseins8.23.77.58.65.8-29.8-26.7-18.6-20.3-22.1-32
Vienziemite drena6.12.964.76-24.9-28.1-10.3-25.5-14.7-30.6
Mellupte upes baseins8.17.111.29.68.3-86243714-32-18-49-7
Mellupte drena16.111.519.720.615.2344431418-2-327-22-41
Brze upes baseins10.517.116.614.718.9-30-29-8-206744
Brze drena19.621.726.82415.84-380139022
Meslojums-razaKop bilance
199519961997199819991995199619971998199919951996199719981999
Vienziemite upes baseins0.120.040.090.140.15-1.3-1.7-1.6-1.4-1.5-2.4
Vienziemite drena0.070.030.070.090.11-1.8-1.1-1.5-0.9-0.7-1.9
Mellupte upes baseins0.230.140.10.240.27609144-2672
Mellupte drena0.20.120.110.770.2229-11962129-119621
Brze upes baseins0.410.520.230.270.19-9-43-31517
Brze drena0.230.230.130.150.112-416222222
IznesesBilance
Vienziemite upes baseinsVienziemite drenaMellupte upes baseinsMellupte drenaBrze upes baseinsBrze drenaVienziemite upes baseinsVienziemite drenaMellupte upes baseinsMellupte drenaBrze upes baseinsBrze drena
199410.412.6-29.8-24.9-304
19958.26.18.116.110.519.6-26.7-28.1-834-19-1
19963.72.97.111.517.121.7-18.6-10.36440
19977.5611.219.716.626.8-20.3-25.52443813
19988.64.79.620.614.724-22.1-14.737143228
19995.868.315.218.915.8-32-30.614183413
Mellupte upes baseins
IznesesBilance
1994
19958.1-8
19967.16
199711.224
19989.637
19998.314
Aver915
Mellupte drena
IznesesBilance
1994
199516.134
199611.54
199719.743
199820.614
199915.218
Aver1723
00
00
00
00
00
00
Izneses
Bilance
00
00
00
00
00
00
Izneses
Bilance
Vienziemite upes baseins
19944.3-29.8
19958.2-26.7
19963.7-18.6
19977.5-20.3
19988.6-22.1
19995.8-32
Aver6-25
Vienziemite drena
19941.8-24.9
19956.1-28.1
19962.9-10.3
19976-25.5
19984.7-14.7
19996-30.6
5-22
Videjie dati 94-99
Vienz dr5-22
Vienz cay6-25
Be dr
Be cat
Mel dr1723
Mell cat915
IzneseBilanceArrble l%
Bas Berze199410.4-3030483
199510.5-2930382
199617.1432889
199716.61930884
199814.73233992
199918.93433691
200012.62930583
200121.41929781
Melupite19958.1-6.439641
19967.1-2.039641
199711.24.042544
19989.66.046448
19998.38.343045
20007.027.040142
200110.915.035937
Vienziemite19944.3-29.8305
19958.2-26.7285
19963.7-18.6224
19977.5-20.3234
19988.6-28.4264
19995.69-41.3254
20004.9-33.617.63
20015.04-32.716.63
IzneseBilance
Brze drena199412.6477100
199519.6-15268
199621.7077100
199726.81377100
199824287395
199915.81377100
200010.81177100
200112.54877100
Mellupite199516.13412100
199611.54650
199719.74312100
199820.61412100
199915.218758
200017.9127.159
200122.4225.848
Vienziemite19941.8-24.91.916
19956.1-28.1217
19962.9-10.31.815
19976-25.5217
19984.7-14.71.210
19996-30.62.521
20004.3-31.42.622
20014.2-32.22.723
Berze
Mellupite
Vienziemite
Drainage fields
N loss kg/ha year-1
Arable crops % of field area
y = 3,8x + 11,6R2 = 0,59
Berze
Mellupite
Vienziemite
Catchments
N loss kg/ha year-1
Arable crops % of catchment area
y = 6,1x - 16,7R2 = 0,69
Berze
Mellupite
Vienziemite
Catchments
N loss kg/ha year-1
N balance kg/ha
y = 3,6x - 41,3R2 = 0,52
Brze upes baseins
IzneseBilance
199410.4-30
199510.5-29
199617.14
199716.619
199814.732
199918.934
Aver155
Brze drena
IzneseBilance
199412.64
199519.6-1
199621.70
199726.813
19982428
199915.813
Aver2010
Berze
Mellupite
Vienziemite
Catchments
Berze
Mellupite
Vienziemite
N loss kg/ha year-1
N balance kg/ha
y = 2,3x - 27,3R2 = 0,51
Drainage fields
00
00
00
00
00
00
Iznese
Bilance
Baseins
00
00
00
00
00
00
Iznese
Bilance
Drenaza
00
00
00
00
00
00
Nutrient run-off (Ntot) and nutrient balance1994-2001