الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Thirty-four surface soil samples (0-30 cm) were collected in addition to some plant samples, such as alfalfa, tomatoes and wheat, as well as samples of irrigation and drainage water from the study area between longitude 31º40` & 32º 05` E and latitudes 31º 02` & 31º 32` N. It encompasses an area of 1107 km2. Investigated sites were identified using a GPS to connect them with Landsat-8 data to determine the spatial distribution of soil carbon pool value in areas of Northeast Nile Delta, Egypt. also knowing effect of soil properties change on organic carbon content over study areas.
The following data were recorded: Some physical properties as soil texture and bulk density(gm/cm3), chemical properties of soil as electric conductivity (EC) (dS.m-1 ), pH values, available nutrients (mg.kg-1 ), Soluble cations and anions (meq.L-1 ), cation exchange capacity (CEC), organic matter and total nitrogen (g.kg-1 ), C/N ratio. Some Forms of carbon were analyzed in the study area such as Soil organic carbon (SOC) (g.kg-1 ) and its density , Dissolved organic carbon (DOC), The oxidizable carbon (OC) and carbon pools content. The normalized difference vegetation index (NDVI) values were taken from 34 sites and associated with the C-pool in the examined soils. Geographical Information System (GIS) technique was used to determine the spatial distribution of soil organic carbon and carbon pool values.
CONCLUSION
Based on the previous results Normalized difference vegetation index NDVI correlated with C-pool values because the high values of NDVI are agreeing with the high C-pool values. The results exhibited there is a strong effect of soil properties change on carbon content over study areas. Therefore, it is recommended to intensify cultivation operations as it is very important for the C fixing in soils, where land degradation mean weak vegetation and release more CO2 to the atmosphere causing the global warming and climate change.