Source of Pollution #1
There isn’t much pollution in the chaparral. However, there are small bits of air pollution. Vegetation of Southern California is rapidly converting to annual grasslands. This could be from air pollution. Forests have equally high levels of air-pollution but are relatively stable. Much of the vegetation have different susceptibilities to each pollutant. Pines are more susceptible to ozone than summer-deciduous shrubs and senescent annual grasses. Shrubs may escape ozone injury. Confers are more susceptible to leaf-deposited nitric acid.
Source of Pollution #2
A big threat to the chaparral biome is the issue of air pollution. This mainly occurs when people are building homes and industries are growing closer and closer to these regions which really affects the air quality. Humans are putting bad gasses into the air near the biome and it is harming the fresh air created by the plants in nature. In the future, it might damage the way that the plants and animals breathe because they need clean air. To stop this, the chaparral needs more plants to help decrease the CO2 levels and circulate the oxygen into the atmosphere.