Land Use Land Cover Dynamics in Ribb Watershed and Its Implication to the Sustainability of Ribb Dam

Geospatial Technologies for Effective Land Governance - Advances in Geospatial Technologies ◽

10.4018/978-1-5225-5939-9.ch009 ◽

2019 ◽

pp. 146-159

Author(s):

Yidnekachew Jember

Keyword(s):

Land Use ◽

Land Cover ◽

Forest Cover ◽

Population Pressure ◽

Land Use Land Cover ◽

Fuel Wood ◽

Grazing Land ◽

Land Cover Dynamics ◽

Widespread Phenomenon ◽

Land Water

Land use land cover dynamics is a widespread phenomenon in many parts of Ethiopia and in Ribb watershed. The main objective of the research was assessing land use land cover dynamics and its implication to the sustainability of Ribb Dam in 1973, 1986, 2001, and 2016 by using Landsat image and household questioner. During the last 44 years, cultivated and settlement land and forest cover showed an increment from 26.29% to 54.89% and 9.45% to 12.86%, respectively. The bush land, grazing land, water body, and wetland, however, showed a relative decrement from 29.48% to 17.09%, 21.45% to 12.70%, 4.64% to 2.39%, and 8.70% to 0.08%, respectively. Population pressure, poverty, weak policy and institutional enforcement, and tenure insecurity revealed as a major cause of the change in land use land cover. Soil erosion, lack of fuel wood, and impact on livelihood are major consequences of land use land cover change.

Download Full-text

Ecosystem Service Values Changes in Response to Land-Use/Land-Cover Dynamics in Dry Afromontane Forest in Northern Ethiopia

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16234653 ◽

2019 ◽

Vol 16 (23) ◽

pp. 4653 ◽

Cited By ~ 3

Author(s):

Negasi Solomon ◽

Alcade C. Segnon ◽

Emiru Birhane

Keyword(s):

Land Use ◽

Ecosystem Services ◽

Land Cover ◽

Ecosystem Service ◽

Forest Cover ◽

Northern Ethiopia ◽

Land Use Land Cover ◽

Afromontane Forest ◽

Land Cover Dynamics ◽

Dry Afromontane Forest

Despite their importance as sources of ecosystem services supporting the livelihoods of millions of people, forest ecosystems have been changing into other land use systems over the past decades across the world. While forest cover change dynamics have been widely documented in various ecological systems, how these changes affect ecosystem service values has received limited attention. In this study we assessed the impact of land-use/land-cover dynamics on ecosystem service values in dry Afromontane forest in Northern Ethiopia. We estimated ecosystem service values and their changes based on the benefit transfer method using land cover data of the years 1985, 2000, and 2016 with their corresponding locally valid value coefficients and from the Ecosystem service valuation database. The total ecosystem service values of the whole study area were about USD 16.6, 19.0, and 18.1 million in 1985, 2000, and 2016, respectively. The analyses indicated an increase in ecosystem service values from 1985 to 2000 and a decrease in ecosystem service values from 2000 to 2016. Similarly, the contribution of specific ecosystem services increased in the first study period and decreased in the second study period. The findings highlight how forest cover dynamics can be translated into changes in ecosystem service values in dry Afromontane forest ecosystems in Northern Ethiopia and showed how specific ecosystem services contributed to the observed trends. The findings also illustrated the temporal heterogeneity in the impacts of land-use/land-cover dynamics on values of ecosystem services. The findings can serve as crucial inputs for policy and strategy formulations for the sustainable use and management of forest resources and can also guide the allocation of limited resources among competing demands to safeguard the ecosystems that offer the best-valued services.

Download Full-text

Spatial Assessment of Land Use/Land Cover Dynamics from 1988 to 2018 in Bonny LGA, Rivers State, Nigeria

Journal of Geography Environment and Earth Science International ◽

10.9734/jgeesi/2019/v23i430175 ◽

2019 ◽

pp. 1-12

Author(s):

D. Dappa ◽

B. C. Ndukwu ◽

A. A. Obafemi

Keyword(s):

Land Use ◽

Land Cover ◽

Information Technologies ◽

Forest Cover ◽

Land Use Land Cover ◽

Spatial Assessment ◽

Mangrove Swamp ◽

Spatial Coverage ◽

Land Cover Dynamics ◽

Rivers State

This study analysed the Spatial Assessment of Land use/Land Cover Dynamics From 1988 To 2018 In Bonny LGA, Rivers State, Nigeria using Landsat imageries of 1988, 2000, 2003, 2016 and 2018 with the aid of Remote Sensing (RS) techniques and Geographic Information System (GIS). Five land use/land cover types where analysed: Waterbodies, Forest, Mangrove/Swamp, Built Up Area/Bare Surfaces and Muddy Surface. The results show that from 1988 to 2018, water bodies, forest, and mangrove/swamp reduced by 5.14%, 25.07%, and 38.28% respectively while built-up area/cleared lands and muddy surface increased by 69.42% and 682.24%. Findings show that spatial coverage of forest and mangrove/swamp decreased between 1988 and 2018 and the reduction in forest cover reduces the significant role that it plays in maintaining the ecosystem. This study has clearly shown the roles of geo-information technologies at monitoring land use/landcover change in Bonny LGA, Rivers State and therefore, recommended that re-afforestation projects, strict legislation, policies, and strategies should be established to replenish the forests and mangrove/swamp; should be put in place.

Download Full-text