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Habiyaremye G.,Hubei University | Habiyaremye G.,Independent Institute of Lay Adventists of Kigali | Jiwen G.,Hubei University | Mupenzi J.P.M.,Hubei University | And 2 more authors.
African Journal of Agricultural Research | Year: 2011

This paper examines the effects of deforestation and its associated consequences as a result of demographic pressure in Rwanda. It came out that demographic pressure led to forest clearance and biodiversity disturbances in general, thereby leading to climate change. Using over 30 and 80 years of climatic variables and demographic data respectively, the analysis of the output of ORIGIN PRO 8.0 showed that the population has increased 4 times in the period of 80 years and this in turn has affected the environment. The forest ecosystems, which occupied 30% of the total surface of the country in 1930 has been reduced to 8.9% as by the year 2000. This severe loss of forests has remarkably led to more than 90% decline of fauna species in Akagera National Park. The analysis of deforestation has revealed some associated consequences on regulating services where a monthly increase of 0.5°C and a monthly decrease of 10 mm in rainfall has been remarked in the study period of 1970 to 2010. Finally, this study suggests the State to put in place tight mechanisms to control the population growth for the attainment of sustainable environmental development and reinforce management of ecosystems so as to inherit an enjoyable and productive environment to the future generations. © 2011 Academic Journals. Source

Bazimenyera J.D.,Northeast Agricultural University | Bazimenyera J.D.,Kigali Independent University | Qiang F.,Northeast Agricultural University | Niragire T.,Independent Institute of Lay Adventists of Kigali
Advanced Materials Research | Year: 2012

This paper analyzed the effects of land use change in the catchment area of Lake Kivu on its water quality. The results of laboratory analysis of water samples from 4 locations testing the concentration of major elements showed that Mn, N, P and K are high during the growing and raining seasons and low during the dry and harvesting seasons. They also indicated that the concentrations of Cr, Al were considerably low in all seasons but vary with the seasons at Nyamasheke and Karongi stations. The variations of other major elements were not depending on the seasonal variations. © (2012) Trans Tech Publications, Switzerland. Source

Habiyaremye G.,Hubei University | Habiyaremye G.,Independent Institute of Lay Adventists of Kigali | Jiwen G.,Hubei University | Mupenzi De La Paix J.,Hubei University | And 2 more authors.
Applied Mechanics and Materials | Year: 2011

Climate change is emerging as one of the most miscellaneous expressions of the global change nowadays. It potentially affects ecosystems including water resources. The change of climate also has significant impacts on the availability of water, as well as the quality and quantity of water that is available and accessible. Aiming at studying the effect of climate change on water resources, 25 years collected secondary data of both climatic and hydro-meteorological stations were used and Statistical analysis was performed using ORIGIN PRO 8.0 Software. The study linked the surface elevation of Lake Kivu variation with respect to climate change where the level of the lake matches to pluviometric and anomalies values. Finally, the statistical analysis could not directly link the temperature variation with that of surface water level in the lake. Climate change is real and happening now and surely affects water resources among others making an urgent need to control anthropogenic inputs into the atmosphere, one of the factors forcing climate change.© (2011) Trans Tech Publications. Source

Jean De La Paix M.,Xinjiang Institute of Ecology and Geography | Jean De La Paix M.,Institute Politechinique Of Byumba Ipb | Jean De La Paix M.,Independent Institute of Lay Adventists of Kigali | Lanhai L.,Xinjiang Institute of Ecology and Geography | And 2 more authors.
Water Science and Technology | Year: 2012

Field studies were carried out in Urumqi River Basin in Northwest China. The study focused on experimentation on a plant algae method that was tested by taking various water chemistries into consideration. The results from a greenhouse experiment evaluated for four doses of P (0, 100, 200, and 300 μmol/L) using two ferns (30 and 60 day old) on 15 L of contaminated groundwater per plant revealed that the biomass of 30-day old ferns gained was higher than 60-day fern. As solution-P increased from 0 to 450 μmol/L, Phosphorus concentration in the fronds increased from 1.9 to 3.9 mg/kg and 1.95 to 4.0 mg/kg for 30-d and 60-d ferns respectively. This study showed that the plant algae method may be a good solution to maximize arsenic uptake in the short term under normal climatic conditions. © IWA Publishing 2012. Source

de la Paix M.J.,Xinjiang Institute of Ecology and Geography | de la Paix M.J.,Independent Institute of Lay Adventists of Kigali | Lanhai L.,Xinjiang Institute of Ecology and Geography | Xi C.,Xinjiang Institute of Ecology and Geography | And 2 more authors.
Land Degradation and Development | Year: 2013

The primary objective of this study was to analyze soil degradation and altered flood risks as a consequence of deforestation. The results showed that the use of fuelwood and competition for agriculture land are the main causes of deforestation, which leads to increased soil erosion and floods. The consequences and the societal risks from floods are quantified. This study indicates that the numbers of fatalities and mortality per river flood event are lower compared with those caused by flash floods. © 2011 John Wiley & Sons, Ltd. Source

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