Vice Chairman of the association Ho Duy Diem said the book would include 120 photos from 100 Vietnamese and foreign photographers.
He said the association had called for voluntary contributions. All money from the book sale will go to the fund.
Last month, freelance photographer Le Phuoc Chin and writer Bui Cong Dung, both from Da Nang, displayed photos at an exhibition of red-shanked langurs (Pygathrix nemaeus), an endangered primates living in the Son Tra reserve, near HCM city.
Last week, a photo of the langur portrait was bought by a local resident at an auction to raise money for the fund.
The 4,400ha Son Tra reserve, 10km from Da Nang, is unique. Its biodiversity ranges from primary forests to oceans with more than 1,000 plants and 370 animal species.
The langurs in Son Tra Nature Reserve were declared endangered by the International Union for the Conservation of Nature (IUCN) in 2013, but the species has recently been classed Critically Endangered (CR) – nearly extinct.
More than 25,000 school students and more than 3,000 local residents have been educated on the importance of biodiversity in the Son Tra reserve on field trips between 2013-17.