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Table 4 Simulated mean values of sediment and nutrient loss from the combination of LILC and slope gradient

From: Combined effect of land use/cover types and slope gradient in sediment and nutrient losses in Chancho and Sorga sub watersheds, East Wollega Zone, Oromia, Ethiopia

LULC

Slope class

Losses of sediment and nutrient from different slope gradient

SYLDt/ha

ORGNkg/ha

ORGPhg/ha

NSURQkg/ha

SOLPkg/ha

SEDPkg/ha

LATQNO3kg/ha

GWNO3kg/ha

Cultivated

0–5%

316a

38.935a

5.904a

3.114a

0.139a

4.991a

0.713a

11.944a

5–8%

373a

37.934a

5.965a

2.876a

0.122a

5.017a

0.776a

12.409a

8–15%

347a

38.562a

6.078a

3.779a

0.160a

4.792a

0.660a

10.990a

15–30%

383a

40.031a

6.097a

5.660a

0.136a

5.441a

0.731a

12.017a

> 30%

269b

36.948a

6.396a

5.612a

0.162a

4.189a

0.941a

9.790a

Forest

0–5%

202a

37.240a

5.466a

2.470a

0.155a

5.352a

0.727a

10.609a

5–8%

216a

42.271a

6.486a

3.029a

0.165a

5.501a

0.964a

11.254a

8–15%

259a

34.872a

6.055a

3.734a

0.198a

5.201a

0.837a

11.427a

15–30%

342a

34.125a

5.827a

3.596a

0.179a

5.006a

0.875a

11.847a

>30%

328a

31.759a

7.141a

4.336a

0.192a

4.556a

0.696a

10.020a

Urban

0–5%

309a

79.180b

9.861a

1.957a

0.088a

11.310b

0.711a

12.366a

5–8%

374a

72.594a

10.158a

2.650a

0.157a

10.704a

1.005a

12.742a

8–15%

431a

73.250a

10.588a

3.237a

0.200a

10.071a

0.716a

12.396a

15–30%

461a

70.371a

10.084a

2.769a

0.167a

9.846a

0.697a

11.355a

Grass

0–5%

236a

38.136a

5.618a

2.966a

0.122a

5.828a

0.523a

13.115a

5–8%

15b

41.868a

7.018a

3.812a

0.171a

4.600a

0.557a

12.135a

8–15%

35b

39.160a

6.577a

2.946a

0.173a

6.592a

0.438a

11.184a

15–30%

193a

40.359a

6.165a

3.241a

0.161a

4.564a

0.522a

11.758a

> 30%

45b

41.755a

7.733a

5.287a

0.175a

2.673a

0.5a

10.556a

  1. SYLDt_ha = sediment loss ton/hectare, ORGNkg_ha = organic nitrogen kilogram/hectares, ORGPhg_ha = organic phosphors gram/hectare, NSURQkg_ha = nitrate in surface runoff kilogram/hectares, SOLPkg_ha = soluble phosphors kilogram/hectares, SEDPkg_ha = sediment phosphorus kilogram/hectares, LAT_Q_NO3kg_ha = nitrate in lateral flow kilogram/hectares, GWNO3kg_ha = nitrate in ground water kilogram/hectares
  2. Different superscript letters in column indicate significant difference at α = 0.05