...
Disaggregated by: Climate, vegetation type, family, lifeform, longevity (annual or perennial), geographic location (national, sub-national)
Method of Calculation:
Step 1: Compute the Shannon index
Shannon Diversity Index (SDI)=i=1n-Pi×lnPi
Pi is the number of individuals of one particular species found in the plant community divided community 
divided by the total number of individuals found in the same plant community (N).
Step 2: Compute Compute the change in the shannon index across the reporting periods (applicable to all but the first reporting period)
Change in diversity=SDItn-SDItoSDIto×100
t0 denotes the first reporting period (e.g baseline) and tn denotes subsequent reporting periods (e.g mid-term, end-term).
Additional notes:
The Shannon index increases as both the richness and the evenness of species in the community increase.
Data sources: Rangelands
Data collection method: Field-data collection from rangeland. Vegetation cover and species composition must be estimated using the point- quadrats method along definite transects with 100 points per transect. The percentage cover of each species data will be used to calculate the Shannon diversity index.
...