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52147

ASSESSMENT OF LAND DEGRADATION IN WADI EL NATRUN AREA, WESTERN DESERT, EGYPT

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Last updated: 22 Jan 2023

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Abstract

Most forms of land degradation are human resource (mismanagement and misuse); some physical and chemical environmental factors are still considered. Quantitative assessment of land degradation and monitoring the changes in land qualities in Wadi El-Natrun are the main objective of this study. Physiographic map of the area was produced by using ETM+, ENVI 5.0 and ArcGIS10. Physiographic map used to determine soil profiles location and soil samples.  From the physical and chemical analysis the results compared with the data extracted from Mohamed, (2011). Land degradation rate, relative extent, degree, and severity level in the study area were assessed. The results indicate that the dominant active land degradation features are; water logging, salinity, alkalinity   and   compaction. Based on the FAO/UNEP, (1979) program of degradation (rate, relative extent, degree, and severity) and the application on that data of water logged, salinity, alkalinity   and compaction compared with Mohamed, (2011). The results indicate that the following: - there is no effect of compaction so there is no compaction degradation . Waterlogged degradation as water table depth changed from 2011 to 2013 as following ( 50-100 cm ) the degraded area increased from (234.32 to 341.28 km2 ) ,
( 100-150 cm ) the soil improved and the degraded area decreased (from 356.31 to 218.42 km2) and ( > 150 cm) were improved. Salinity degradation as electrical conductivity(EC dS/m) data changed from ( 2011 to 2013 ) that the ( 8-16 dS/m ) the degraded area increased from ( 0.0 to 16.83 km2), ( 4-8 dS/m ) the soil improved and the degraded area decreased (from  190.86 to 110.43 km2) and ( <4 dS/m ) the soil improved and the area increased (from 399.76 to 451.87 ). Alkalinity degradation  data changed from ( 2011 to 2013 ) that the ( >15 %) no change , ( 10-15% ) the soil improved and the degraded area decreased (from 437.98 to 190.82 km2) and ( <10 % ) the soil improved and the area increased (152.64 to 388.32 km2 )  

DOI

10.21608/jssae.2013.52147

Keywords

Physiographic map, land degradation, compaction, salinity, Alkalinity

Authors

First Name

P. M.

Last Name

Aqrawi

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Affiliation

Soils Science Dept., Faculty of Agriculture, Cairo Uni., Giza, Egypt.

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First Name

A. A.

Last Name

Abdel Hady

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Affiliation

Soils Science Dept., Faculty of Agriculture, Cairo Uni., Giza, Egypt.

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Orcid

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First Name

W.A.

Last Name

Abde lKawy

MiddleName

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Affiliation

Soils Science Dept., Faculty of Agriculture, Cairo Uni., Giza, Egypt.

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City

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Orcid

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First Name

A.

Last Name

El-Nahry

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Affiliation

National Authority for Remote Sensing and Space Sciences

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Volume

4

Article Issue

9

Related Issue

8004

Issue Date

2013-09-01

Receive Date

2013-08-23

Publish Date

2013-09-01

Page Start

811

Page End

826

Print ISSN

2090-3685

Online ISSN

2090-3766

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https://jssae.journals.ekb.eg/article_52147.html

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https://jssae.journals.ekb.eg/service?article_code=52147

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Original Article

Type Code

889

Publication Type

Journal

Publication Title

Journal of Soil Sciences and Agricultural Engineering

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https://jssae.journals.ekb.eg/

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Article

Created At

22 Jan 2023