Title :
Monitoring land degradation in Southern Africa based on net primary productivity
Author :
Wessels, K.J. ; Prince, S.D. ; Small, J.
Author_Institution :
Dept. of Geogr., Maryland Univ., College Park, MD, USA
Abstract :
Land degradation involves conditions of reduced net primary production (NPP). Our objective was to develop and evaluate a land degradation monitoring approach that is based on NPP. NPP was modeled using the Global Production Efficiency Model (GLO-PEM) and 1km AVHRR data. Degraded areas in the Northern Province of South Africa were successfully detected using NPP, Rain Use Efficiency (RUE) and Local NPP Scaling (LNS) as measures of land condition.
Keywords :
rain; soil; terrain mapping; AVHRR data; GLO-PEM; Global Production Efficiency Model; Local NPP Scaling; Monitoring land degradation; RUE; Rain Use Efficiency; Southern Africa; net primary production; soil moisture; Africa; Degradation; Monitoring; Production; Productivity; Rain; Soil moisture; Stress; Temperature; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1294764
