Greg and list:
1. Thanks for this alert on what ew might call the “Fawzy” paper. Below a few comments from a biochar perspective - after a few hours of review. Overall I think biochar was treated fairly - with one exception given next. I have only skimmed the other sections of the paper.
2. I enjoyed the word density charts of their Figure 4 - but believe it deficient as they didn’t perform their search using the word “biochar”. Their roughly 4000 cites for the years 2015-2020 would probably have been more than doubled had “biochar” been an included search term - so I can understand not including “biochar". But I think the resultant chart still must be missing the important CDR trends that involve biochar.
I remember seeing a similar word char with biochar - can anyone gives a cite for other such bibliometric searches?
3. Their cite for the biochar paper by Semida is not free but is available through ResearchGate and is worth reading.
4. I was especially impressed by their reference to a paper by T.J. Purakayastha et al: "A review on biochar modulated soil condition improvements
and nutrient dynamics concerning crop yields: pathways to climate change mitigation and
global food security.”
Still behind a pay way, but Google Scholar gave this early version:
http://eprints.whiterose.ac.uk/144976/1/accepted%20version.pdf. Section 3 of the paper is on the climate aspects of biochar - but mostly this (like most biochar papers) is on soils. Well over 150 cites I think - and several good summary figures that were new to me.
5. Anyone have similar comments on this paper’s treatment of the other CDR approaches?
Ron