The main pollution source of the hydrargyrum of vegetable and soil is the atmosphere dust of factory and gas in the Harbin's greenbelt.
哈尔滨市绿地土壤和植物的汞污染主要来源是工厂和交通尾气的大气降尘。
The spatial expanding intensity of road and factory and industry are higher, that of greenbelt and others is decreasing so that it becomes negative increasing.
武汉市道路工厂用地及工业用地的年均空间扩展强度较高，而绿地及其它用地呈下降以至于负增长趋势。
Green plan in iron and steel enterprises involves the greenbelt before factory area, the greenbelt in the workshop area, green roads and green railway.
厂区各部分功能的不同，钢铁企业绿化可划分为厂前区绿化、生产区绿化、道路绿化和铁路绿化。
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