Analysis of Spatial and Temporal Variation in Water Coverage in the Sub-Lakes of Poyang Lake Based on Multi-Source Remote Sensing
Laurindo Antônio Guasselli
Round 1
Reviewer 1 Report
Comments in the attached file
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Author Response
Dear Reviewer:
The main corrections are in the manuscript and the responds to your comments has been uploaded，please see the attachment.
Author Response File: 
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Reviewer 2 Report
I have read the article entitled “Analysis of Spatial and Temporal Variation of Water Coverage in the Sub-Lakes of Poyang Lake Based on Multi-Source Remote Sensing”. The methods used are quite robust and adequate. However, I believe there are a few points to be improved for publications.
Discussion: In this part, we need to discuss the method we used advantages and disadvantages, and compare it with the previous study as well.
References: Too many references regarding Chinese authors and update latest references.
Detailed suggestions and comments list below.
143-145“The overall accuracy of GlobeLand30 V2010 data is 83.50%, and the Kappa coefficient is 0.78; The overall accuracy of GlobeLand 30 V2020 data is 85.72%, and Kappa coefficient is 144 0.82.”
How were the detection points generated, how many images were detected in total, and what method was used for accuracy testing?
159-160 “MODIS data is used to calculate MNDWI in a high spatial resolution of 30m 159 using a downscaling model;“
What method was used for resampling the MODIS data? Please provide the interpolation method.
189 “??,? and??,? are correlation regression coefficients.”
Are the parameters a and b fixed values? If yes, please indicate the source. If not, please explain the method of determination.
194-195 “Multiple linear regression analysis predicts or estimates the dependent variable by the optimal combination of multiple independent variables,“
Why was the linear regression model chosen? Please provide the reason
218 “NDWI threshold method, MNDWI threshold method,”
Where is the reference for the method of using a threshold to extract water area, and how is the threshold determined?
352-356 “The changes in the sub-lake water area are not only affected by natural factors, but also by human activities. Land use change is an important indicator that reflects human social and economic activities [41-43]. The classification of land use in 2010 and 2020 is 354 shown in Figure 10. The dynamic degree of land use (K) of each land use type is calculated.Table 8 shows the results.”
Is the land use classification dataset a public dataset or self-made? If it is self-made, please explain the method. If it is a public dataset, please indicate the source.
Minor editing of English language required
Author Response
Dear Reviewer:
The main corrections are in the manuscript and the responds to your comments has been uploaded，please see the attachment.
Author Response File: Author Response.docx
