Start with high-confidence landscape photography books, then narrow by subgenre or adjacent topics.
The Lay of the Land
Joe Greer
Extraordinary Everyday Photography
Brenda Tharp, Jed Manwaring
David Yarrow Photography
David Yarrow, Tom Brady
Feed the Planet
George Steinmetz, Michael Pollan
National Geographic World From Above
Jeffrey Kerby
STILL
Mary Jo Hoffman
60 Years of Wildlife Photographer of the Year
Rosamund Kidman Cox
Richard Misrach on Landscape and Meaning
Richard Misrach, Lucas Foglia
Edible Plants
Jimmy Fike
The Ultimate Photography Ideas Book
Digital Camera World, Niall Hampton
Paul Nicklen