Spartina alterniflora biomass utilization and benefit assessment in China

Abstract

Abstract

This study explores the utilization of Spartina alterniflora biomass and the development of innovative products derived from this invasive species. Initially introduced to China for coastal erosion control and wetland restoration, S. alterniflora has been harnessed for creating a bio-mineral liquid (BML) and various derivative products such as Spartina beverage, beer, sherbet powder, and capsules. These products offer significant health benefits and contribute to the local economy.

The research evaluates the benefits of S. alterniflora biomass utilization using a comprehensive new methodology. This approach incorporates updated market values and advanced utilization techniques, providing a more accurate assessment of economic, ecological, and social benefits. The benefit calculation formula used in this study is:

B = B₁ + B₂ + B₃

Where:

B₁ = W × C_g × P_n, represents the value of Spartina extraction.

B₂ = (F₁C₁ + F₂C₂ + F₃C₃+ F₄C₄) - 4/5 B₁, represents the value of Spartina series products.

B₃ = R_u×W(1- C_g)( P_r1+ P_r2), represents the residue value.

The total benefit was calculated to be 18 111 000 RMB/hm²yr ($2 502 556/hm²yr).

This evaluation underscores the potential of Spartina biomass utilization as a sustainable ecological industry, balancing invasive species control with substantial economic returns.