Effects of Land Use and Cover Changes on Elephant Home Ranges and Distribution in Maasai Mara Landscape, Narok County, Kenya

Understanding spatial-temporal land use and cover change is essential in developing physical planning strategies in populated and fast-growing towns and cities. This study examined the spatial and temporal changes in land use and land cover in West District in Zanzibar. Remote sensing techniques—including spatial and temporal assessment of land use and land cover changes between 1975 and 2015—were employed to establish the status and trend of land use and land cover changes in the district. Participatory field observation, focus group discussions and secondary data review were used in data collection. The study findings revealed that between 1975 and 2015 there were spatial and temporal changes in land use and land cover; with one land use and land cover type changing at the expense of another, and vice versa. Also, about 90% of settlements in the district developed at the expense of forest and agricultural lands, leading to rapid landscape changes of 83% in 40 years. At this pace, it is predicted that in the next 40 years the district’s built-up area may expand beyond its borders. Such changes are linked, among other factors, to increased population demanding more land for settlements among other domestic needs. This article concludes that land use and land cover in the West District, Zanzibar, depict notable quantitative and qualitative changes. Continuous land use and land cover change detection and modelling for future settings and planning are recommended for sustainable land management.

Forest and wood land ecosystems in Tanzania occupy more than 45% of the land area, more than two thirds of which made up of the Miombo woodland. The main form of land use in the Miombo region has long been shifting and small-scale sedentary cultivation. The lack of infrastructure and prevalence of deadly diseases such as malaria and trypanosiomiasis have long limited extensive clearance for cultivation, livestock farming and settlements. However, due to positives changes in the socio-economical, political and technological setup in miombo region, the types and intensity of land use are now changing. This paper discusses preliminary results from a study conducted with the aim of contributing to the understanding of dynamics of land cover and use changes in miombo woodlands of eastern Tanzania. The study area comprises four villages around the “Kitulangalo Forest Reserve”, 140 km west of Dar es Salaam on either side of the Morogoro-Dar es Salaam highway. Landsat MSS satellite images of July 1975, Landsat TM satellite images of July 2000 were used to assess land cover changes between 1975 and 2000. Participatory Rural Appraisal (PRA), questionnaire survey and checklists for key informants were the major methods used for collecting socio-economic data. The land cover/use class of woodland with scattered cultivation has recorded the highest percentage of change between July 1975 and July 2000. While all other classes have registered positive changes, only the closed woodland class has had negative change meaning that this class has been decreasing in favour of other land cover/use classes. Recent land cover and use changes are drastic in the study area. These changes have been triggered largely by varied factors including mainly increased population density and subsequent economic activities. Economic activities including charcoal business, shifting cultivation, opening up of improved highway and pastoralism in the study area have greatly contributed to deforestation and woodland degradation. In light of these findings, there is need for: (1) Adequate land use planning and survey of village lands so as to avoid exacerbation of land use conflict and environmental degradation in the study area. (2) Agrarian reforms to eliminate open access regimes to natural resources. (3) Enforcement of fiscal policies related to the extraction of natural resource products such as timber and charcoal so as to reduce pressure on woodlands. Keywords: land use – cover change – Kitulangalo – miombo woodlands

Introduction: Landscape changes can be monitored using geotechnologies through land use and land cover management over time, which helps identify and understand transformations in the landscape and supports decision-making processes. This study aims to analyze land use and cover change in the Portal do Sertão Identity Territory, Bahia, and to relate the possible causes that have currently induced such changes. This territory, located in the Caatinga biome, has its economic activities mainly concentrated in the primary and tertiary sectors. Remote Sensing (RS) and Geographic Information Systems (GIS) were employed to monitor changes in land use and cover in this territory from 1985 to 2022, using images from the MapBiomas Collection 8.0. During the study period, there was a reduction in the area used for agriculture and livestock and a significant increase in urbanization, with an urban area growth of more than 380%. Additionally, water bodies also expanded, mainly due to the construction of the Pedra do Cavalo Hydroelectric Plant in 1985, which resulted in a larger flooded area. Forest formations, although fluctuating over the years, were negatively impacted by agricultural expansion and urbanization. Therefore, the use of geotechnologies such as RS and GIS proves to be an effective tool for environmental monitoring, enabling the identification and management of land use changes and contributing to the mitigation of environmental impacts. Objective: The aim of this study is to investigate land use and land cover changes in the Portal do Sertão Identity Territory, in order to identify the possible causes currently driving these transformations. . Theoretical Framework: Remote Sensing (RS) is a science that maps Earth’s surface targets using sensors without direct contact. It is an essential tool for understanding and monitoring land use and land cover changes, providing critical information for decision-making from multiple perspectives. Its integration with Geographic Information Systems (GIS) enhances the spatiotemporal analysis of processes such as environmental and territorial degradation. The concept of "Identity Territory," developed by SEPLAN-BA, considers sociocultural, economic, and geographic factors for territorial organization. Institutionalized by state decrees, it divides Bahia into 27 territories to promote regional public policies. The articulation of RS, GIS, and the Identity Territory framework offers an effective approach to understanding and managing land use changes in the Portal do Sertão. Method: This study analyzed land use and land cover changes in the Portal do Sertão Identity Territory, composed of 27 municipalities in Bahia, aiming to understand the possible driving forces behind these changes. Satellite images from the MapBiomas Brazil Collection 8.0 were used for the years 1985, 1990, 1995, 2000, 2005, 2010, 2015, 2020, and 2022. A GIS environment was used to reclassify the images into four classes based on the MapBiomas classification: Forest Formation, Agriculture, Urban Area, and Water Bodies. The total area per class was quantified for each year, and land use transition maps were generated for spatial analysis. Results and Discussion: The analysis revealed that between 1985 and 2022, the Portal do Sertão Identity Territory experienced significant transformations in land use and cover. There was a notable reduction in agricultural and livestock areas and a sharp increase in urban development, particularly in Feira de Santana and neighboring municipalities, driven by industrialization, public policies, and real estate expansion. Forest cover fluctuated, while water bodies increased following the construction of the Pedra do Cavalo Hydroelectric Plant in 1985. These changes reflect processes of urbanization, rural exodus, and territorial reconfiguration influenced by economic, social, and infrastructural factors. Research Implications: This research provides essential technical and spatial support for territorial planning in the region, assisting local governments and institutions in making more informed decisions based on historical land use patterns. The findings highlight the importance of integrated public policies focused on territorial planning, environmental preservation, and housing, especially in light of rapid population growth. Originality/Value: This study contributes to the literature by analyzing the drivers of land use change using open-access data from MapBiomas. Its significance lies in the integration of Remote Sensing and GIS to investigate land use trends in the Portal do Sertão over the past decades, providing strategic insights to support public policy development and more effective territorial planning.

As one of the last agricultural frontiers of the humid tropics, Amazonia is the largest area of the world currently undergoing frontier settlement. Although the earliest intrusions of foreign populations into Amazonia date from pre-Hispanic times, the large-scale entrance of peasant colonists into the vast region is a recent phenomenon. Much of this movement represents the spontaneous migration of peoples, but governments in the region have also become increasingly interested in opening up and integrating Amazonia to national and international economies. These actions are frequently seen as potential solutions to a number of national problems, including the need to increase agricultural production, correct spatial imbalances in the distribution of population, exploit frontier lands for reasons of national security, and defuse potentially serious political problems resulting from the existing agrarian structure, landlessness, and unemployment. The upper basin of the Amazon in Ecuador, bordering on the eastern slopes of the Andes, is one such area of frontier settlement. Recent decades have witnessed the rapid conversion of these Amazonian forests to agricultural uses through a series of schemes bearing such labels as land development and colonization. Most forest intervention in the region has come at the hands of colonist farmers attempting to establish land claims along transport routes originally constructed to aid in petroleum exploration and exploitation. These are farmers who formerly have made a living in long-established farmlands and who, for various reasons (population pressures, pervasive poverty, maldistribution of farmland, lack of inputs for intensive cultivation, lack of nonagrarian livelihood opportunities, and generally inadequate rural development) have been increasingly squeezed out of their homelands. A marginal person by virtue of his low socioeconomic and political status, the farmer often perceives

Changes in land use and land cover in different places around the globe have a significant impact on ecological structure and functions as well. Analysis of the changes in land use and land cover is useful in management activities, especially forest reserves as it reflects the interaction between adjacent communities and natural resources. Due to the rapid sprawl in urbanisation, there has been a rapid change in the human-land relationship. Rau Forest is situated in Moshi Municipality of Kilimanjaro Region in Tanzania. There have been several claims of a decrease in vegetation cover in this important forest reserve, although there is no documentation on such claims. It is on the basis of this background this study was conducted to explore the changes in land use and land cover in the Rau Forest reserve to show the management status of this ecosystem which is also located in an urban area where management activities have been a challenge. The land use and cover (LULC) Spatio-temporal changes in the Rau Forest were classified as Densely Vegetation, Slightly Vegetation, Grassland, Bare land, Built-up, and Waterbodies to evaluate qualitative and quantitative changes in this reserve through the use of GIS techniques and tools over time (1990, 2000 and 2019). Forest encroachment has driven changes in land use and land cover and transformed parts of the Rau Forest reserve into the urban settlement, and grazing lands which has ultimately led to gradual forest degradation. Landsat imageries for the year were used to identify the Spatio-temporal changes in vegetation in the area. This study shows the downward trend for the densely vegetated part of the reserve at the expense of expansion in the built-up area. The results demonstrate the urgent need for strong and more severe regulations concerning the protection of Rau Forest and other urban situated forest reserves against land use and land cover changes for the benefit of the present and future generations.

This study investigates land use and land cover changes in the Teiči Strict Nature Reserve, Latvia, from 1982 to 2023 and models potential future changes based on four legislative scenarios extending to 2064. The research aims to assess the effectiveness of existing conservation zoning in relation to historical and projected changes in land use and land cover, addressing the ongoing debate between fixed and adaptable conservation strategies. The study employs remote sensing imagery, geographical information system data, and land use and land cover modeling methods to analyze historical changes and predict future trends. The results suggest substantial land use and land cover changes over the past four decades, including intensified urbanization, agricultural expansion, and a decline in peat bogs and forested areas. Scenario projections indicate that continued land use and land cover changes could further challenge the efficiency of current conservation strategies, with varying outcomes depending on legislative measures and climate change impacts. The study concludes that adaptive management and variable conservation zoning are necessary to address these dynamic changes and preserve the reserve’s ecological integrity. The results emphasize the importance of integrating predictive modeling into conservation planning to improve flexibility and sustainability in protected areas.


 
 
 Floods are one of the most common natural disasters worldwide. Apart from rainfall, Land Use Land Cover (LULC) changes too are a main contributory factor for floods. This study attempted to understand the link between floods and LULC changes in Kalu river basin, which is the second largest river basin and an area that experiences recurrent floods in Sri Lanka. We studied peak water levels, number of flood events, changes in land use types and impacts in rapidly urbanizing two districts, Rathnapura (upper basin) and Kalutara (lower basin) during 2001-2020. The satellite images (LANDSAT) were obtained for 2001, 2009, 2015 and 2020 and land use classification was done using ArcGIS and Remote Sensing Tools. Main land use types and their transformations were investigated and ground-truthing was carried out. Accordingly, the main types of land uses identified were Natural Vegetation and forests (NV), Settlements (ST- housing and industrial lands), Cultivated Lands (CL), Water Bodies (WB) and Bare Lands (BL). The results indicated that the most drastic change was found in the natural areas (NV) and they have diminished while the lands with anthropogenic impacts (ST, CL and BL) have increased across years. The NV had occupied the highest land area in 2001 (42.4%) and has reduced by 14.2% by 2020. The ST and CL have increased by 8.6 % and 5.2% respectively. The monthly rainfall of Rathnapura and Kalutara (Source: Department of Meteorology, Sri Lanka) has increased with time, which is a main reason for the increasing peak water levels of these areas (Source: Department of Irrigation, Sri Lanka). However, a significant correlation also exists between the change of the settlement area with the peak river water levels in the lower basin (p=0.03, R2=99%; regression analysis). Rathnapura has experienced 3 major floods (floods above the high water alert level) from 2001-2020, while 16 major floods have occurred in Kalutara. During the major flood in 2017, the number of child deaths in Rathnapura was 14 while in Kalutara it was 24. Accordingly, the LULC changes of the whole basin along with rainfall seem to influence on the severity of floods in Kalutara more, as it is located in the lowest elevation level. When natural lands are transformed to anthropogenic- impacted areas with disturbances to the water cycle, increased impervious surfaces, reduced water storage capacities and loss of natural drainage, the flood risk tends to increase. Proactive approaches including proper land use planning and rainwater storage are urgently needed as the climate change too would trigger more floods. Thus, the flood mitigatory actions, especially, in the lower river basin should be a priority to ensure resilience and sustainability.
 Keywords: Kalu river basin, Land Use Land Cover (LULC) changes, Floods
 
 

Wilderness areas are not immune to changes in land use, land cover, and/or climate. Future changes will intensify the balancing act of maintaining ecological conditions and untrammeled character within wilderness areas. We assessed the quantitative and spatial changes in land use, land cover, and climate predicted to occur in and around wilderness areas by (1) quantifying projected changes in land use and land cover around wilderness areas; (2) evaluating if public lands surrounding wilderness areas can buffer future land‐use change; (3) quantifying future climate conditions in and around wilderness areas; and (4) identifying wilderness areas expected to experience the most change in land use, land cover, and climate. We used projections of land use (four variables), land cover (five variables), and climate (nine variables) to assess changes for 707 wilderness areas in the contiguous United States by mid‐21st century under two scenarios (medium‐low and high). We ranked all wilderness areas relative to each other by summing and ranking decile values for each land use, land cover, and climate variable and calculating a multivariate metric of future change. All wilderness areas were projected to experience some level of change by mid‐century. The greatest land‐use changes were associated with increases in agriculture, clear cutting, and developed land, while the greatest land cover changes were observed for grassland, forest, and shrubland. In 51.6% and 73.8% of wilderness areas, core area of natural vegetation surrounding wilderness was projected to decrease for the medium‐low and high scenarios, respectfully. Presence of public land did not mitigate the influence of land‐use change around wilderness areas. Geographically, projected changes occurred throughout the contiguous U.S., with areas in the northeast and upper Midwest projected to have the greatest land‐use and climate change and the southwestern U.S. projected to undergo the greatest land cover and climate change. Our results provide insights into potential future threats to wilderness areas and the challenges associated with wilderness stewardship and climate adaptation. Despite the high degree of protection and remoteness of wilderness areas, effective management and preservation of these lands must consider future changes in land use, land cover, and climate.

Climate change and land use land cover (LULC) changes are recognised as two of the most significant causes of environmental change. Climate change and LULC changes are related to one another. Land use change may drive climate change, and a changing climate may result in land cover changes. Climate change and LULC changes are believed to influence soil erosion. This chapter analyses the impacts of climate and LULC changes on soil erosion. The causes and effects of climate change on precipitation, temperature, solar radiation, atmospheric CO2 concentrations, and radiative forcing are discussed. The chapter includes the impacts of climate change on soil characteristics, vegetation cover, runoff, floods, and droughts and extends the impacts of these changes on water and wind erosion. The chapter explores the human alterations of LULC changes in terms of changes in the forest cover, alterations in agricultural lands, increase in urban areas, and decrease in wetland areas. The influence of the LULC changes on soil erosion and sediment production processes is discussed. Also, the combined impact of climate and LULC changes on soil erosion is explored, and mitigation strategies like sustainable land management practices and appropriate policy incentives to conserve soil are discussed.

Understanding the impacts of Land Use and Land Cover (LULC) changes and their drivers is crucial for sustainable management of natural resources. Thus, this rigorous study aimed to examine the trends, drivers, and consequences of land use land cover changes (LULC) in the Lake Ziway catchment, central rift valley of Ethiopia. The study followed a mixed- methodological systematic and justified approach that included remote sensing and GIS techniques, household surveys, focus group discussions, and in-depth interviews. The rigorous study shows that the conversion of forest land into agricultural and settlement lands is the major detected LULC change over the last 30 years in the catchment. Cultivated land has increased by 40.60% and settlement and plantation lands have increased by 61.54% and 60%, respectively. On the other hand, forest land decreased by 54.85% and grazing land have decreased by 15.85% respectively. Water bodies and wetlands have also decreased by 8.70% and 19.32% area coverage, respectively. Both the direct and indirect driving forces of the LULC changes were identified. The study also indicates that the participation of local communities in watershed management is low. The study further indicates that LULC changes observed in the Lake Ziway Catchment had statistically and practically significant environmental and socio-economic impacts. Over all, the rigorous study showed the changes in land use land cover and its drivers were common in Lake Ziway Catchment. Therefore, appropriate policies and strategies are required to address LULC change impacts and enhance sustainable utilization and management of the Lake Ziway catchment.

AN ASSESSMENT OF SPATIAL VARIATION OF LAND SURFACE CHARACTERISTICS OF MINNA, NIGER STATE NIGERIA FOR SUSTAINABLE URBANIZATION USING GEOSPATIAL TECHNIQUES

Impact of land cover and land use change on runoff characteristics

The terms "land use" and "land cover" pertain to two related ideas about how the earth's surface is covered. While land use refers to the socioeconomic framework and purpose that enable human activity on the land. Land cover refers to the natural or ecological state of the land. Since land is a valuable and limited resource, knowledge of changes in land cover and use is crucial for determining how human activity affects the ecosystem. This study examined the state of land cover change and land use at Hemja, a location within the Pokhara Metropolitan City, over a 20-year period. Direct observation, topographic map verification, surveys, focus group discussions, and interviews were the methods used to gather primary data. Through a variety of governmental and non-governmental sources, secondary data were gathered. The results of the study were obtained by statistical and geographical analysis of this data. The conversion of agricultural, woodland, bush, and sandy areas into built-up areas was one of the study area's most noticeable changes. Various issues related to infrastructure, economy, and demography have been proposed as the reasons behind this shift in the study area across the historical period. Additional research micro level could be useful in examining the specific effects of the causes and estimating the potential effects of such changes in land use and land cover.

The pace of change in land use and cover in Ethiopia depends on three main factors that cause pressure on agriculture land: resettlement programmes, population growth and increasing agricultural investments. Gambella is one of the regions of Ethiopia that attracts large-scale agricultural investments that extensively drive land use and cover changes in the region. The aim of this study is to examine the rate, extent and distribution of various land use and cover changes in Gambella Regional State, Ethiopia, from 1987 to 2017. The analysis is mainly based on Landsat 5 and Sentinel 2A satellite images and fieldwork. Two Landsat Thematic Mapper and a Sentinel 2A image were used for determining the maximum likelihood of land use/cover classification. The results show that farmland decreased by 26 km2 from 1987 to 2000; however, during the last two decades, agricultural land area increased by 599 km2, mainly at the cost of tropical grasslands and forests. We found that areas cultivated by smallholder farmers increased by 9.17% from 1987 to 2000. However, small-scale farm activities decreased by 7% from 2000 to 2017. Areas cultivated by large-scale state farms totalled 202 km2 in 1987; but by 2000, this large-scale state farming had been completely abandoned by the state, and as a result, its land use has decreased to zero. Despite this, in 2017 large-scale farming increased to 746 km2. In addition, Gambella National Park, which is the nation's largest national park and ecosystem, was also largely affected by Land Use and Land Cover changes. The conversion of savannah/tropical grasslands to agricultural farmland has caused varied and extensive environmental degradation to the park. The Land Use and Land Cover changes in the Gambella region are discussed on the basis of underlying socioeconomic factors.

Understanding trends of land use land cover (LULC) changes is important for biodiversity monitoring and conservation planning, and identifying the areas affected by change and designing sustainable solutions to reduce the changes. The study aims to evaluate and quantify the historical changes in land use and land cover in Mukumbura (Ward 2), Mt Darwin, Zimbabwe, from 2002 to 2022. The objective of the study was to analyse the LULC changes in Ward 2 (Mukumbura), Mt Darwin, Northern Zimbabwe, for a period of 20 years using geospatial techniques. Landsat satellite images were processed using Google Earth Engine (GEE) and the supervised classification with maximum likelihood algorithm was employed to generate LULC maps between 2002 and 2022 with a five (5) year interval, investigating the following variables, forest cover, barren land, water cover and the fields. Findings revealed a substantial reduction in forest cover by 38.8%, water bodies (wetlands, ponds, and rivers) declined by 55.6%, whilst fields (crop/agricultural fields) increased by 93.3% and the barren land cover increased by 26.3% from 2002 to 2022. These findings point to substantial changes in LULC over the observed years. LULC changes have resulted in habitat fragmentation, reduced biodiversity, and the disruption of ecosystem functions. The study concludes that if these deforestation trends, cultivation, and settlement land expansion continue, the ward will have limited indigenous fruit trees. Therefore, the causes for LULC changes must be controlled, sustainable forest resources use practiced, hence the need to domesticate the indigenous fruit trees in arborloo toilets.