I suggest the Authors to follow the reviewers comments and to improve the English style. In addition, I encourage to widen the paper by adding details in the used spatialization procedures and models. Also some details on the economic sustainability of viticulture would be appreciated.

The second reviewer recommends to deal with the climatic factors which are very important in islands, namely, the impact of the wind, sea breeze. Since on the islands the spatial variability of wind, temperature, precipitation is very important, these issues should be treated with some more detail. He also recommends to report about the data interpolation methods.
I personally would also have some more information about soils. You mention a great variability, but no maps or tables are provided.
I suggest to follow these comments in your next revision.
All the best

The Ms has been well improved, nevertheless, some minor further enhancement are needed, in particular, the authors have to i) conceptualize the approach and ii) make explicit the soil suitability classes, likewise climate and topography:
- The approach you use is that of the so-called “natural terroir units” (Laville, P. (1993). Unite´s de terroir naturel et terroir. Une distinction ne´cessaire pour redonner plus de cohe´rence au syste`me d’appellation d’origine. Bull. O.I.V., 745–746, 227–251; Priori, S., Barbetti, R., L’Abate, G., Bucelli, P., Storchi, P., and Costantini, E. A. C. (2014). Natural terroir units, Siena province, Tuscany, Journal Maps, 10, 466–477) you should make reference to it
- Add a table with functional soil parameters and suitability classes (likewise you did for climate), in particular, drainage, AWC, depth to bedrock, and pH, that you mention at line 109 (see for instance Bucelli, P., Costantini, E.A.C. (2009) Wine Grape and Vine zoning. Manual of methods for soil and land evaluation. Costantini, E.A.C. (Ed.), Science Publishers, Enfield (NH), (USA), 353-400. ISBN 978-1-57808-571-2)
- Add a map of existing vineyards and DOC limits
- Compare suitability of existing DOC and potential new terroirs
- Complete table 1 with the functional soil parameters (like stoniness, gravel, skeleton, depth to bedrock)
- In the conclusions, mention that future research activities on viticultural and oenological results are needed to check the wine suitability of the delineated candidate terroirs (i.e. natural terroir units)

The work has been properly improved with table and maps. I only recommend the correction of the English orthography on table 2 and added text

Dear authors, I am glad to let you know that tour manuscript has been now accepted for publication in SOIL, only some minor things still pending. Please see comments from Guest Editor of this Special Issue.

Many thanks for consider SOIL to publish your research results.

Jorge