lifetable {forestPSD} | R Documentation |
Generte the static life table to analyze the population dynamic changes.
Description
Static life tables were used to analyze the dynamic changes.
Usage
lifetable(ax)
Arguments
ax |
Population number of within different age class. |
Details
Generte the static life table to analyze the population dynamic changes.
Value
Result returns the results of a static life table, which includes the following parameters, ax: existing individual number within age class x; lx: standardized survival number at the beginning of age class x (generally converted to 1000); lnlx: logarithmicstandardized survival number; dx: standardized death number within the interval from age class x to x + 1; qx: mortality rate; Lx: average survival number within the interval from ageclass x to x + 1; Tx: total survival number from age class x and beyond; ex: life expectancy of individuals entering age class x; Sx: survival rate; Kx: disappearance rate of the population.
Author(s)
Zongzheng Chai, chaizz@126.com
References
Zhang Y, Wang J, Wang X, Wang L, Wang Y, Wei J, et al. 2024. Population structures and dynamics of Rhododendron communities with different stages of succession in northwest Guizhou, China. Plants-Basel 13.
Examples
data(Npop)
lifetable(ax=Npop$ax)