Land-surface subsidence and groundwater resources have drawn a great attention of the public in urban environment problems.
地面沉降与地下水资源是深受关注的城市环境问题。
Moreover all index systems and methods for urban ecological environment are studied. At the same time, the existing problems are indicated and the Suggestions are put forward.
对目前国内外城市生态环境评价指标体系和方法进行了分析和研究，提出了其中存在的问题和建议。
Pervious cement pavement concrete is of good perviousness, it can release the problems of highway seeper and urban environment, so it is a sort of environmental protection concrete.
透水水泥路面混凝土具有良好的透水性，能够缓解公路积水和城市环境问题，是一种环保型的混凝土。
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