Question

Define natural vegetation. How are they classified?​

Answer 1

Answer:

Natural vegetation means the plants that have not been grown by humans.

The growth of vegetation depends on temperature and moisture. It also depends on factors like slope and thickness of soil.

It is categorized into three broad categories: Forest, grassland and shrubs.

Answer 2

Explanation:

The categories of Natural (including ruderal) and Cultural vegetation are treated as separate hierarchies within the NVC. The new 8-level natural vegetation hierarchy emphasizes physiognomy in an ecological context at three upper levels, and increasingly integrates biogeography and floristics at three middle levels . The new middle levels bridge the large conceptual gap between alliance and formation, an important improvement over the 1997 hierarchy. The upper levels of the USNVC hierarchy are based on dominant and diagnostic growth forms that reflect environment at global to continental scales. The mid-levels are based on dominant and diagnostic growth forms and compositional similarity reflecting biogeography and continental to regional environmental factors. The lower levels (alliance and association) are based on diagnostic and/or dominant species and compositional similarity reflecting local to regional environmental factors. The relationship of the new hierarchy levels and classification criteria is depicted in the diagram below.