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Abstract: dense population, short supply of urban land property, insufficient greening target aim, prominent heat island effect, and worsening urban ecological environment are the consequences of urbanization. Roof greening, as a new way which doesn't directly use soil to carry out greening, to some extent, improved the urban greening environment. As a result, Green Roof is attracting more and more people's attentions today when urban environment severe concern. It has significant meaning to increasing urban greening and improve urban ecological environment by roof greening through effective measures and scientific methods.
Key words: roof greening, type, effect Nanning City, stratergy
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