naa a22 4500 569282705 20190726063009.0 cr unu---uuuuu 190726s2019 xx s 000 0 eng 2072-4292 10.3390/rs11101217 doi (BORIS)oai:boris.unibe.ch:131268 910 ddc Spatial Evolution of Prosopis Invasion and its Effects on LULC and Livelihoods in Baringo, Kenya [Elektronische Daten] [Purity Rima Mbaabu, Wai-Tim Ng, Urs Schaffner, Maina Gichaba, Daniel Olago, Simon Choge, Silas Oriaso, Sandra Eckert] publishedVersion openAccess eu-repo Woody alien plant species have been deliberately introduced globally in many arid and semi-arid regions, as they can provide services and goods to the rural poor. However, some of these alien trees and shrubs have become invasive over time, with important impacts on biodiversity, ecosystem services, and human well-being. Prosopis was introduced in Baringo County, Kenya, in the 1980s, but since then, it has spread rapidly from the original plantations to new areas. To assess land-use and land-cover (LULC) changes and dynamics in Baringo, we used a combination of dry and wet season Landsat satellite data acquired over a seven-year time interval between 1988-2016, and performed a supervised Random Forest classification. For each time interval, we calculated the extent of Prosopis invasion, rates of spread, gains and losses of specific LULC classes, and the relative importance of Prosopis invasion on LULC changes. The overall accuracy and kappa coefficients of the LULC classifications ranged between 98.1-98.5% and 0.93-0.96, respectively. We found that Prosopis coverage increased from 882 ha in 1988 to 18,792 ha in 2016. The highest negative changes in LULC classes were found for grasslands (−6252 ha; −86%), irrigated cropland (−849 ha; −57%), Vachellia tortilis-dominated vegetation (−3602 ha; −42%), and rainfed cropland (−1432 ha; −37%). Prosopis invasion alone directly accounted for over 30% of these negative changes, suggesting that Prosopis invasion is a key driver of the observed LULC changes in Baringo County. Although the management of Prosopis by utilization has been promoted in Baringo for 10-15 years, the spread of Prosopis has not stopped or slowed down. This suggests that Prosopis management in Baringo and other invaded areas in East Africa needs to be based on a more integrated approach. Mbaabu Purity Rima joint author Ng Wai-Tim joint author Schaffner Urs joint author Gichaba Maina joint author Olago Daniel joint author Choge Simon joint author Oriaso Silas joint author Eckert Sandra joint author Remote sensing 11(10), p. 1217 2072-4292 https://boris.unibe.ch/131268/1/Eckert_2019_Spatial_Evolution.pdf text/html WWW-Backlink auf das Repository 1 info:eu-repo/semantics/article boris PeerReviewed boris peerstatus BORIS 856 40 https://boris.unibe.ch/131268/1/Eckert_2019_Spatial_Evolution.pdf text/html WWW-Backlink auf das Repository BORIS 700 1- Mbaabu Purity Rima joint author BORIS 700 1- Ng Wai-Tim joint author BORIS 700 1- Schaffner Urs joint author BORIS 700 1- Gichaba Maina joint author BORIS 700 1- Olago Daniel joint author BORIS 700 1- Choge Simon joint author BORIS 700 1- Oriaso Silas joint author BORIS 700 1- Eckert Sandra joint author BORIS 773 0- Remote sensing 11(10), p. 1217 2072-4292 BK010053 XK010053 XK010000 BORIS BORIS BORIS info:eu-repo/semantics/article openAccess