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Table 14 Land degradation status in the different mapping unit

From: Assessment of land degradation and implications on agricultural land in Qalyubia Governorate, Egypt

Mapping unit

Land degradation status

I

(Pw i/d/o 3,4) (Ca o 2,2)

SI

(Pw i/d/o 3,4) (Cs o 2,2) (Ca o 2,2)

L

(Pw i/d/o 3,3) (Cs o 2,4) (Ca o 2,2)

O.M

(Pw i/ o 2,2) (Pc m/o 2,4) (Cs mi 2,4) (Ca mi 2,4)

O.B

(Pw i/ o 2,4) (Pc m/c 2,4) (Cs mi 2,4) (Ca mi 2,4)

D.B

(Pw i/ o 2,4) (Pc m/o 2.5) (Cs mi/o 2,5) (Ca mi 2,5)

T.B

(Cs mi 2,2) (Ca mi 2,2)

T

(Cs o 2,4)

  1. The first two letters = degradation types as, Pw physical degradation/water logging, Pc physical degradation/soil compaction, Cs chemical degradation/salinization, Ca chemical degradation/alkalization
  2. The following one or two letters = causative factors as, I over irrigation, d human intervention in natural drainage, m improperly time use of heavy machinery, mi poor management of irrigation scheme, o other activities
  3. The first digit = degree of land degradation; the second digit = relative extent of degradation