绿化覆盖率是反映一个国家或地区生态环境保护状况的重要指标。也是中国环境保护模范城市和创建文明城市考核的重要指标。是城市内全部绿化覆盖面积与区域总面积之比。绿化覆盖面积指城市中的乔木、灌木、草坪等所有植被的垂直投影面积,包括公共绿地、居住区绿地、单位附属绿地、防护绿地、生产绿地、道路绿地、风景林地的绿化种植覆盖面积、屋顶绿化覆盖面积以及零散树木的覆盖面积。
... 绿化覆盖面积green coverage 绿化覆盖率percentage of greenery coverage 绿地率greening rate，ratio of green space ...
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... air quality 空气质量 green coverage rate 绿化覆盖率 take into account 考虑 ...
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... overall coverage ratio 综合偿债保障率 relative coverage ratio 相对覆盖率 coverage ratio of green 绿化覆盖率 ...
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There are serious influence on the percentage of greenery coverage and green looking rate of the tree's height, crown and shape.3.
树木的形状、大小对绿化覆盖率、绿视率的影响大。
参考来源 - 城市道路绿视率研究The results above indicated that PM10 concentration could be decreased in a certain extend, and the quality of air in downtown of Beijing could be improved by increase of virescence overlay rate and making suitable greenbelt types.
上述结果表明，提高总体绿化覆盖率和营造合理的绿地类型能够在一定程度上降低城区空气中的PM10浓度，提高空气质量。
参考来源 - 北京城区绿化对空气中可吸入颗粒物与降尘的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
机场全部建成后，绿化覆盖率将达到50%以上。
After completed, the airport will have above 50% plants coverage.
人均绿地面积达到11平方米，城市绿化覆盖率达到42%。
Per capita green area reached 11 square meters, the city green coverage rate reached 42%.
尤其是西北地区的部分城市绿化覆盖率不足5 % ，城市环境容量非常有限。
Especially in the north-west of China, many cities have proportion of green areas less than 5%.
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