dry dataset

Productivity in Chiapas Dry Forests

Richness of forest trees and average productivity for the 2001-2007 period estimated from MODIS images (NDVI, Normalized Difference Vegetation Index for 250 x 250 m pixels) in 96 plots of 0.1 ha in the dry forests of Chiapas (Mexico). data

data("dry")

Format

A data frame with 96 observations on the following 2 variables.

• richness: Number of tree species per plot.
• ndvi: Average productivity.

Details

NDVI values range between 0 an 1, with higher values indicating higher productiviy.

Examples

data(dry)
str(dry)