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

Bulletin of the National Research Centre

Kh. M. Darwish¹  W. A. M. Abdel Kawy² 

[1] Land and Water Technologies Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Borg Al-Arab, Alexandria, Egypt;Soils Science Department, Faculty of Agriculture, Cairo University, Giza, Egypt;

关键词: Land degradation;    Degradation hazard;    Land qualities;    Qalyubia governorate;    Arid land;   

DOI  :  10.1186/s42269-019-0102-1

来源: Springer

【 摘 要 】

BackgroundLand degradation considers as a phenomena or more that decrease the current and/or the potential soil capability to produce goods. It signifies a regression from a higher to lower state, owing to descend in land capability, productivity, and decline of biodiversity. This study is an attempt to address the complexity of land degradation issue, particularly in the targeted farming irrigated fields, Qalyubia Governorate, Egypt. It aims to assess and observe degradation hazard through satellite image analyze, model trends of degradation, and generate a change detection hazard map for the investigated area.ResultsThe maximum likelihood supervised classification tool and post classification change detection technique were implemented for monitoring changes in land qualities. Land degradation indicator data layers were summarized into the metrological data, ground truth, vegetation cover, and the applied land management practices. The Modified Global Assessment of Soil Degradation GLASOD model was adapted to model land degradation, specify its action in term of degradation degree, relative extent, severity level, and causative factors. Land degradation processes were evaluated in the delineated mapping units. The result indicated that the studied areas are considered as quite unstable in term of ecosystem due to active degradation resulting from aridity phenomena, soil properties, and improper farm management.ConclusionThe most active land degradation processes are assessment of salinization, waterlogging, alkalization, and soil compaction.

【 授权许可】

CC BY