Tag Archives: Landscape

Review on Rehabilitation of degraded dry land ecosystems (Published)

Land degradation is worldwide and a high thing that have an outcome on the livestock of 1.5 billion people whole of which one seventh or 250 million people live in dry lands. Globally, it is assumed that 10–20% of dry lands are already degraded and about 12 million ha are cleaned each year in a case of using treatment. Reached by on unstable ground land use practices, adverse air conditions and the increase of population, land degradation has led to beg to be excused in precondition of ecosystem services, insecurity of food, political and social unsteadiness and lessening in the ecosystem’s resilience to natural climate unpredictability. All world studies have been launched to minimize land degradation, including rehabilitation of degraded dry lands. Restoration of agricultural land is important for sustainability of agriculture and environment. The basic factors causing soil erosion-induced degradation are wind and water erosion. The main causes of erosion on agricultural land are intensive cultivation, overgrazing, poor management of arable soils and deforestation. Restoration of eroded agricultural land is achieved through several agronomic and biological techniques. Biological measures such as buffers, conditioner application in direct contact with the soil surface, crop residues using manure protect the soil from erosion. This review aimed at collating the current state-of-knowledge about rehabilitation of degraded dry lands. Development of progression based models that forecast outcomes of the various treatment activities will be useful tools for researchers and practitioners. The concept of forest landscape re-establishment approach, which operates at landscape level, could also be adopted as the good framework for rehabilitation of degraded dry land ecosystems.

Citation: Yohannes Kidane and   Iseral Zewide (2022) Review on Rehabilitation of degraded dry land ecosystems, British Journal of Earth Sciences Research, Vol.10, No.1, pp.1-24

Keywords: Landscape, land degradation; rehabilitation; degraded dry land; Agricultural

The Impact of Human Presence on the Behavioral Activity of Birds in Buea University Campus, Southwest Region, Cameroon (Published)

The interaction of different elements within urban systems varies with the nature of land-use both temporally and permanently. Land-use dictates amount and type of land cover but the length of time a fragment is maintained within the surrounding dominant landscape, as well as its size strongly influences the composition and abundance of its flora and fauna. Urbanization modifies landscapes by changing resources such as food, water, perches, roosts, and nesting sites for birds. The main objective of this study was to examine the role of human presence on the social activity of birds in the campus of university of Buea. The research data was collected on check-sheets for a period of 2 months, 6 days a week, from 7:00am – 6:00pm. The spot-count data collection method used witnessed 616 bird observations during the study. Simultaneously, data was collected on human activity state, day-period, bird species, bird location, and bird number. Bird location and human-campus activity showed a significant link, χ2 = 8.696 df=4 P<0.05.  Moreso, bird activity showed a significance on human activity, χ2 = 10.600 df=8 P<0.05. Similarly, bird number associated significantly with human activity in the campus, χ2 = 19.842 df=20 P<0.05. Additionally, bird location associated significantly with their activity, χ2 = 121.799 df=8 P=0.000. Besides, bird activity related significantly with the day-period, χ2 = 11.061 df=8 P<0.05. Also, bird activity showed a link with the day-period, χ2 = 11.061 df=8 P<0.05. The day-period revealed a significant link with bird number, χ2 = 22.822 df=20, P<0.05. This survey showed the village weaver bird (Ploceus cucullatus) (17.86%) as the most dominant bird species in the campus of university of Buea. However, the survey also recorded an observation of 11.36%, 9.09%, 7.79%, 7.63%, 7.30%, and 6.01% on little weaver bird (Ploceus luteolus), grey-headed sparrow (Passer griseus), pied crow (Corvus albus), orange-cheeked waxbill (Estrilda melpoda), and little weaver bird (Ploceus luteolus), respectively. The study discovered that the university campus of Buea does not serve as a conflict zone for humans and birds, rather the social activity of birds was observed consistent with low human population presence.

Keywords: Bird activity, Bird species, Human activity, Landscape, Urban systems