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Artículo en Inglés | MEDLINE | ID: mdl-36085224


The land use land cover (LULC) change due to the rapidly growing population is a common feature of the urban area. The rapidly growing population in Malakand Division is a greater threat to the LULC of the area due to its negative impact on environment and ecology. This research aims to detect the variations in LULC from 1991 to 2017 in the Malakand Division, Khyber Pakhtunkhwa (KP) province of Pakistan. The study relies on secondary dataset downloaded from the US Geological Survey (1991, 2001, 2011, and 2017 imageries) and the United Nations Office for the Coordination of Humanitarian Affairs (UN OCHA) website. Maximum likelihood technique under supervised image classification was opted to analyze the LULC changes in between 1991 and 2017. The results were based on six major land use classes including agriculture built-up area, vegetation cover, water bodies, snow cover, and barren land. The results from 1991 to 2017 show a substantial reduction in snow cover and barren land which is consequence of climate change. A known change has been recorded in built-up area which shows an increase from 1.02 to 6.2% with a change of 5.18% of the total land. The vegetation cover water bodies were also showing increase in area. The vegetation cover increased from 28.89 to 44.67% while barren land decreased from 45.68 to 40.29% of the total area. Furthermore, the built-up area increased from 1.02 to 6.2%, whereas water covers increased from 0.63% (1991) to 0.86% (2017) of the total area. The study concludes that there is an immense need for planning to preserve the natural habitat for sustainable development in the area.

Popul Newsl ; (51): 1-8, 1991 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-12179608


PIP: This is a summary of the findings published in the World Population Monitoring 1991, by the Population Division of the Department of International Economic and Social Affairs of the United Nations Secretariat, concerning the world refugee populations. Data are tabulated and discussed by regions and countries, excluding Palestinians and "externally-displaced persons" of Central America. During the 1980s the world's refugee population grew by almost 75%, from 8.5 to 14.8 million, now totaling 17 million. The region with the largest number is Asia, with 7 million, followed by Africa with 4.3 million, and then by 1.2 million displaced persons in Central America. Repatriation efforts in Africa lessened the burden of Ugandans, Ethiopians and Namibians. New refugees left the countries of Mozambique, Sudan, Somalia and Ethiopia. In Asia, Afghans and Indo-Chinese made up most of the refugees, prompting a United Nations International Conference on Indo-Chinese Refugees which formulated a Comprehensive Plan of Action for Vietnamese asylum seekers. 1.5 million Indo-Chinese have been settled, primarily in developed countries. Most of the 5.6 million Afghans have not returned from Iran and Pakistan. There has been a moderate increase in refugees from Eastern Europe. The countries accepting most refugees for resettlement are the United States, Canada, and Australia.^ieng

Desastres , Emigración e Inmigración , Desarrollo de Programa , Refugiados , Guerra , Conservación de los Recursos Naturales , Demografía , Ambiente , Política , Población , Dinámica Poblacional , Migrantes , Abastecimiento de Agua