Journal article
A Multilevel Analysis of the Impact of Land Use on Interannual Land-Cover Change in East Africa
Ecosystems, Vol.10(3), pp.402-418
04/2007
DOI: 10.1007/s10021-007-9026-y
Abstract
The aim of this study was to characterize the short-term land-cover change processes that were detected in Eastern Africa, based on a set of change metrics that allow for the quantification of interannual changes in vegetation productivity, changes in vegetation phenology and a combination of both. We tested to what extent land use, fire activity and livestock grazing modified the vegetation response to short-term rainfall variability in East Africa and how this is reflected in change metrics derived from MODerate Imaging Spectrometer (MODIS) time series of remote sensing data. We used a hierarchical approach to disentangle the contribution of human activities and climate variability to the patterns of short-term vegetation change in East Africa at different levels of organization. Our results clearly show that land use significantly influences the vegetation response to rainfall variability as measured by time series of MODIS data. Areas with different types of land use react in a different way to interannual climate variability, leading to different values of the change indices depending on the land use type. The impact of land use is more reflected in interannual variability of vegetation productivity and overall change in the vegetation, whereas changes in phenology are mainly driven by climate variability and affect most vegetation types in similar ways. Our multilevel approach led to improved models and clearly demonstrated that climate influence plays at a different scale than land use, fire and herbivore grazing. It helped us to understand dynamics within and between biomes in the study area and investigate the relative importance of different factors influencing short-term variability in change indices at different scales.
Details
- Title: Subtitle
- A Multilevel Analysis of the Impact of Land Use on Interannual Land-Cover Change in East Africa
- Creators
- S Serneels - Department of Geography University of Louvain 3, place Louis Pasteur 1348 Louvain-la-Neuve BelgiumM Linderman - Department of Geography University of Iowa Iowa City Iowa 52242 USAE Lambin - Department of Geography University of Louvain 3, place Louis Pasteur 1348 Louvain-la-Neuve Belgium
- Resource Type
- Journal article
- Publication Details
- Ecosystems, Vol.10(3), pp.402-418
- DOI
- 10.1007/s10021-007-9026-y
- ISSN
- 1432-9840
- eISSN
- 1435-0629
- Publisher
- Springer-Verlag; New York
- Language
- English
- Date published
- 04/2007
- Academic Unit
- Geographical and Sustainability Sciences
- Record Identifier
- 9983983652202771
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