Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Association between the trends in greening and degradation from the residual trend approach and the changes in vegetation structure inferred from shifts in short- (SS) and long-term (SL) NPP sensitivity. “Sig Up” and “Sig Down” denote significance at P < 0.05. EM, eastern Mali; NS, northern Senegal; SN, southwestern Niger; and WM, western Mali.
