Defining the temporal window for monitoring forest canopy defoliation using LandsatAn analysis of Landsat imagery of forested areas near Williamsport, Pennsylvania shows that the effects of defoliation by insects can be assessed over a two month period beginning in early June. Within this window heavily defoliated forest can be successfully delineated from moderately defoliated and healthy forest. Consequently, the effects of insect damage can be assessed at times other than peak defoliation, doubling the probability that useful satellite data can be acquired in the Williamsport area.
Document ID
19820051195
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Nelson, R. F. (NASA Goddard Space Flight Center Earth Resources Branch, Greenbelt, MD, United States)