Ecohydrological effects of biocrust type on restoration dynamics in drylands.

摘要: Global climate change influences not only vascular plants, but also biological soil crusts (biocrusts), which play important roles in dryland vegetation dynamics by redistributing rainfall soils. Different types of biocrusts, spanning a spectrum from cyanobacteria-dominated and moss-dominated, have distinct redistribution patterns, the ecohydrological effects different biocrust on ecosystem remain largely unclear. This study developed an model with as system state variable to explicitly explore Shapotou region northern China, particularly after restoration. The results indicated that both cyanobacteria- moss-dominated biocrusts could support high grass cover (approximately 40%) Cyanobacterial, moss maintain level shrub (13 3%, respectively). Shifting cyanobacteria mosses gradually increased approximately 40% 80%. biocrust's water-holding capacity (the volume water it can intercept per unit area) is likely be able explain (with correlation efficiency R2 = 0.972 0.987, respectively), (R2 = 0.224). findings suggest type may significantly affect coverage shrubs, coverage, global influence restoration altering types.