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The International Conference for Urban Forestry in Challenging Environments will be held in Beijing, China, from August 29th to September 1st , 2010.The central theme of the conference is on how to manage urban forests in various challenging environments. To maintain sustainable urban forests in cities is the ultimate goal of urban forest management. However, this task can be very challenging for cities facing unfavorable natural or anthropogenic influences. Those influences include scorching heat in desert cities, freezing temperatures in high-altitude and high latitude cities, damages by natural disasters such as hurricanes in coastal cities, competition for scarce resources in cities in developing countries, vanishing support for urban forestry programs in western cities that are experiencing economic woes, negative impact inflicted by climate change, and destruction by people in conflict zones.