城市污染物 meaning in English
urban pollutant
Examples
- 1 ) the number of sandstorm days from 12 weather stations in the helanshan zone is documented , indicating that the events can happen on the east and west sides of the ranges all the year round , with high frequencies in april to may , averaging 3 . 2 and 3 . 1 days on the west side , respectively and with the eastern high frequency in april , averaging 2 . 0 days . also , analysis reveals that the high frequency period for eastern station yanchi and western guaizihu is april , with 5 . 4 and 5 . 2 days , on average , respectively
银川、巴音浩特和通古淖尔三地背景大气沙尘气溶胶粒子的数浓度谱和质量浓度谱均呈单峰型，服从对数正态分布，与城市污染物气溶胶的三峰、双峰质量谱明显不同。浮尘、扬沙、沙尘暴天气条件下，平均数浓度和质量浓度是依次增加的，可相差4 - 7倍。沙尘气溶胶粒子谱分布还与地理位置有关。 - The increase of waste from cities , the heavier of agricultural chemical pollution , the serious pollution produced by poultry waste , as well the pollution produced with the development of township enterprises have affected the organic production of agricultural ecosystem , reduced the quality of produce , weakened the soil ecological process , destroyed biodiversity , weakened the function of climate regulation and disaster - reduction , decreased insect pollination and the effect of control pest
城市污染物排放增加，农业化学品污染加重，农村畜禽粪尿污染成灾以及乡镇企业污染发展影响了农业生态系统有机质生产，降低了农业产品品质，减弱了土壤生态过程，破坏了生物多样性，减弱了气候调节与减灾功能，减少了动物传粉与有害生物控制效应七项生态服务功能。