干旱区生态环境知识资源中心(Arid): Spatial Evolution of Prosopis Invasion and its Effects on LULC and Livelihoods in Baringo, Kenya

Arid

DOI	10.3390/rs11101217
	Spatial Evolution of Prosopis Invasion and its Effects on LULC and Livelihoods in Baringo, Kenya
	Mbaabu, Purity Rima 1,2,3; Ng, Wai-Tim 4,5; Schaffner, Urs 6; Gichaba, Maina 1; Olago, Daniel 1; Choge, Simon 2; Oriaso, Silas 1; Eckert, Sandra 7
通讯作者	Mbaabu, Purity Rima
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2019
卷号	11 期号:10
英文摘要	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.
英文关键词	biological invasion prosopis landsat random forest land use land cover change Kenya
类型	Article
语种	英语
国家	Kenya ; Austria ; Switzerland
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000480524800075
WOS关键词	SPECIES INVASION ; RANDOM FORESTS ; NORTHERN CAPE ; MESQUITE ; JULIFLORA ; AFRICA ; CLASSIFICATION ; GROUNDWATER ; ENVIRONMENT ; PATTERNS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218371
作者单位	1.Univ Nairobi, ICCA, POB 30197, Nairobi, Kenya; 2.Kenya Forestry Res Inst KEFRI, POB 57-30403, Marigat, Kenya; 3.Chuka Univ, POB 109-60400, Chuka, Kenya; 4.Earth Observat Data Ctr Water Resources Monitorin, Franz Grill Str 9, A-1030 Vienna, Austria; 5.Univ Nat Resources & Life Sci Vienna BOKU, Inst Surveying Remote Sensing & Land Informat IVF, A-1180 Vienna, Austria; 6.CABI, CH-2800 Delemont, Switzerland; 7.Univ Bern, Ctr Dev & Environm, CH-3012 Bern, Switzerland
推荐引用方式 GB/T 7714	Mbaabu, Purity Rima,Ng, Wai-Tim,Schaffner, Urs,et al. Spatial Evolution of Prosopis Invasion and its Effects on LULC and Livelihoods in Baringo, Kenya[J],2019,11(10).
APA	Mbaabu, Purity Rima.,Ng, Wai-Tim.,Schaffner, Urs.,Gichaba, Maina.,Olago, Daniel.,...&Eckert, Sandra.(2019).Spatial Evolution of Prosopis Invasion and its Effects on LULC and Livelihoods in Baringo, Kenya.REMOTE SENSING,11(10).
MLA	Mbaabu, Purity Rima,et al."Spatial Evolution of Prosopis Invasion and its Effects on LULC and Livelihoods in Baringo, Kenya".REMOTE SENSING 11.10(2019).