Hello Fatma

In general, the NDVI is an applied index for vegetation studies (losses, gains, health status, etc.)

Then, of course, it is an appropriate indicator for studies land cover change during agricultural seasons.

Here are some papers:

https://www.sciencedirect.com/science/article/pii/S0034425796001241

https://www.sciencedirect.com/science/article/pii/S0301479710004081

https://www.mdpi.com/2072-4292/3/12/2568

https://www.spiedigitallibrary.org/journals/Journal-of-Applied-Remote-Sensing/volume-8/issue-1/083691/Using-phenological-metrics-and-the-multiple-classifier-fusion-method- to / 10.1117 / 1.JRS.8.083691.short? SSO = 1

https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-8/39/2014/isprsarchives-XL-8-39-2014.pdf

I hope they are useful

Best regards

René

You can use different methods for this. I think you could use it but bare in mind that you can just detect the changes in vegetation cover, without vegetation cover you might detect different factors that could produce some variation in the RED and NIR bands such as humidity....

Could be a good idea to use some wetness index together with the NDVI.

I attached two papers that use the NDVI over different covers.

I hope this will help you

Article Linking land use changes to variation in soil properties in ...

Article NDVI, 137Cs and nutrients for tracking soil and vegetation d...

You can use the semi automatic classification plugin of QGis using multispetral data (Sentinel2) and radar data (Sentinel-1).

Hi René ,

Really thanks for you help

Best wish

Fatma

Hi Ivan Lizaga ,

Thanks alot for you help

Best wish

Fatma

Hi Marco M. Sozzi,

Thanks alot for you help

Best wish

Fatma

If you do not have experience yo can use some of the already estimated index with Landsat. In an agriculture season you can have serveral images of your study area.

Please check http://landsatexplorer.esri.com.s3-website-us-west-2.amazonaws.com/

try the tasseled cap transform. It is supposed to show the crop evolution.