Human activities are considered one of the main contributors towards environmental changes. An assessment of the impacts of land use and land cover changes is necessary to facilitate proper planning and management of environmental resources. The objective of this study was to determine the land use and land cover change hotspots and drivers in lagha bor catchment, Wajir County in Kenya. This was achieved by use of Google Earth Engine (GEE) where archived landsat images of 1986, 1990, 2000, 2010 and 2020 were retrieved and analysed for land use land covers (LULC). The main land use considered in the study area included, dense shrubs, sparse shrubs, grassland and bare-ground. The land use and land cover change dynamics were determined through classification, change detection and analysis of Landsat imageries of 1986, 1990, 2000, 2010 and 2020 within Google Earth Engine platform. Land use and land cover change analysis showed that spare-shrubs and bare-ground cover were predominant accounting for approximately 95% of the catchment. Between 1986 and 2020, bare-ground cover increased from 35% to 45.8% while sparse shrubs decreased from 60.8% to 49%. From this, bare-ground was found to increase at the expense of sparse shrubs vegetation. Spatial-temporal trend analysis showed that hot spots which corresponded to areas under high sparse shrubs accounted for 35% while cold spots which corresponded to bare-ground cover was 43%. The hotspots were determined using optimized and emerging hot spot analysis tool in ArcGIS Pro was used in the assessment of trends. Area that experienced no pattern showed no statistically significant increase or decrease in these two land covers and accounted for about 22%. Areas recording significant changes (hot or cold spots) were observed around settlements with permanent water points.
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Muriuki, M. , Obando, J. , Makokha, M. , Shisanya, C. , Shifield, J. , Oloo, F. , Liu, C. and Ngaracu, F. (2023). Human Impacts Onland Use and Land Cover Change in Lagha Bor Catchment, Wajir County, Kenya. Open Access Library Journal, 10, e9854. doi: http://dx.doi.org/10.4236/oalib.1109854.
Omoyo, N.N., Wakhungu, J. and Oteng’i, S. (2015) Effects of Climate Variability on Maize Yield in the Arid and Semi-Arid Lands of Lower Eastern Kenya. Journal of Agriculture and Food Security, 4, Article No. 8.
https://doi.org/10.1186/s40066-015-0028-2
Liniger, H.P. and Studer, R.M. (2019) Sustainable Rangeland Management in Sub-Saharan Africa—Guidelines to Good Practice. World Bank Group (WBG), Washington DC.
Kariuki, R., Willcock, S. and Marchant, R. (2018) Rangeland Livelihood Strategies under Varying Climate Regimes: Model Insights from Southern Kenya. Journal of Land, 7, Article 47. https://doi.org/10.3390/land7020047
Egeru, A., Wasonga, O., MacOpiyo, L., Tabuti, M. and Majaliwa, M. (2015) Piospheric Influence on Forage Species Composition and Abundance in Semi-Arid Karamoja Sub-Region, Uganda. Pastoralism, 5, Article 12.
https://doi.org/10.1186/s13570-015-0032-y
Albhaisi, M., Brendonck, L. and Batelaan, O. (2013) Predicted Impacts of Land Use Change on Groundwater Recharge of the Upper Catchment, South Africa. Journal of African Journals Online (AJOL), 39, 211-220. https://doi.org/10.4314/wsa.v39i2.4
Jawuoro, O.S., Koech, O.K., Karuku, N.G. and Mbau, S.J. (2017) Effects of Piospheres on Physio-Chemical Soil Properties in the Southern Rangelands of Kenya. Journal of Ecological Processes, 6, Article No. 14.
https://doi.org/10.1186/s13717-017-0082-8
Lind, J., Sabates-Wheeler, R., Caravani, M., Kuol, D.B. and Nightingale, M.D. (2020) Newly Evolving Pastoral and Post-Pastoral Rangelands of East Africa. Pastoralism, 10, Article No. 24. https://doi.org/10.1186/s13570-020-00179-w
Measho, S., Chen, B., Pellika, P., Trisurat, Y., Guo, L., Sun, S. and Zhang, H. (2020) Land Use/Land Cover Changes and Associated Impacts on Water Yield Availability and Variations in the Mereb-Gash River Basin in the Horn of Africa. Journal of Geophysical Research, 125, e2020JG005632. https://doi.org/10.1029/2020JG005632
Vehrs, H.P. (2015) Changes in Landscape Vegetation, Forage Plant, Composition and Herding Structure in the Pastoralist Livelihoods of East Pokot, Kenya. Journal of East African Studies, 10, 88-110. https://doi.org/10.1080/17531055.2015.1134401
Kumar, J. and Mutanga, O. (2018) Google Earth Engine Applications since Inception: Usage, Trends, and Potential. Remote Sensing, 10, Article 1509.
https://doi.org/10.3390/rs10101509
Hütt, C., Koppe, W., Miao, Y. and Bareth, G. (2016) Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multi-Temporal, Multi-Sensor, and Multi-Polarization SAR Satellite Images. Remote Sensing, 8, Article 684. https://doi.org/10.3390/rs8080684
Mohajane, M., Essahlaoui, A., Oudija, F., Hafyani, M. and Teodoro, A.C. (2017) Mapping Forest Species in the Central Middle Atlas of Morocco (Azrou Forest) through Remote Sensing Techniques. International Journal of Geo-Information, 6, Article 275. https://doi.org/10.3390/ijgi6090275
Philippe, M.T. and Karume, K. (2019) Assessing Forest Cover Change and Deforestation Hot-Spots in the North Kivu Province, DR-Congo Using Remote Sensing and GIS. American Journal of Geographic Information Systems, 8, 39-54.
Shariati, M., Mesgari, T., Kasraee, M. and Jahangirirad, M. (2020) Spatiotemporal Analysis and Hotspot Detection of COVID-19 Using Geographic Information System. Journal of Environmental Health Science and Engineering, 18, 1499-1507.
https://doi.org/10.1007/s40201-020-00565-x
Xu, B., Qi, B., Ji, K., Liu, Z., Deng, L. and Jiang, L. (2022) Emerging Hot Spot Analysis and the Spatial-Temporal Trends of NDVI in the Jing River Basin of China. Journal of Environmental Earth Sciences. (Preprint)
https://doi.org/10.21203/rs.3.rs-482991/v1
Ye, Y., Wang, Y., Liao, J., Chen, J., Zou, Y., Liu, Y. and Feng, C. (2022) Spatio-temporal Pattern Analysis of Land Use Functions in Contagious Coastal Cities Based on Long-Term Time Series Remote Sensing Data. A Case Study of Bohai Sea Region, China. Remote Sensing, 14, Article 3518. https://doi.org/10.3390/rs14153518
Hunt, L.P., Mclvor, J.G., Grice, A.C. and Bray, S.G. (2014) Principles and Guidelines for Managing Cattle Grazing in the Grazing Lands of Northern Australia: Stocking Rates, Pasture Resting, Prescribed Fire, Paddock Size and Water Points: A Review. Journal of Rangeland, 36, 105-119. https://doi.org/10.1071/RJ13070
Shahriary, E., Palmer, M.W., Tongway, D.J., Azarnivand, H., Jafari, M. and Saravi, M.M. (2012) Plant Species Composition and Soil Characteristics around Iranian Piospheres. Journal of Arid Environments, 82, 106-114.
https://doi.org/10.1016/j.jaridenv.2012.02.004
Wudad, A. and Abdulahi, A. (2021) Expansion of Prosopis juliflora and Land Use Land Cover Changes in Korahey Zone of Somalia Regional State, Eastern Ethiopia. Journal of Materials and Environmental Science, 12, 728-737.