DP - 2019年4月6，TA - 当前世界环境PG - 10-26 VI - 61 IP - 62 4099 - 4100 www.a-i-l-s-a.com/article/1125/ - www.a-i-l-s-a.com/article/1125/ AB - 前所未有增加数Nr造成一些环境问题，如富营养化，臭氧消耗和气候变化等过度上午十时正创作还负责工厂贫穷和人体健康，土壤酸化，地下水污染等居住形式〜世界，共享的四分之一人口只有4.9％的全球总陆地面积的土地，南亚地区消耗了占全球肥料养分的60％。印度是南亚地区综合制造肥料的最大消费国。据估计，印度消耗〜1700万吨NR /年，使南亚和印度的热点氮物质的沉积。在印度，氮肥消耗增加314倍，从1950年至1951年至2013-14。在1951年至1952年每公顷氮肥消费量为0.44 KGHA-1，而它是86.2 KGHA-1在2013 - 14年。由于降雨限于几个月，大部分时间天气炎热干燥。因此，干沉积是在该区域的污染物去除的关键机制。湿沉积在季风期间主要发生。 The wet deposition of NH3-N observed to be the highest in the Indo-Gangetic plains. The annual NO3-N deposition at the urban, suburban, rural and industrial site found to be 4.48, 2.10, 4.06 and 3.92 kgha-1 respectively, and the annual deposition of NH4-N at the urban, suburban, rural and industrial site found to be 2.38, 2.10, 2.38 and 5.05 kgha-1 respectively. The average total wet deposition of NO3-N and NH4-N in India is estimated to be 6.01kgha-1 which is equivalent to 1.97 Tg N/yr. The average total dry deposition of NH4-N and NO3-N through dust fall found to be 0.37 kg ha-1 and 0.84 kg ha-1 respectively. The average total dry deposition of NH4-N and NO3-N in the form of aerosols found to be 0.28 and 1.65 kg ha-1 while through gaseous dry deposition it was 4.72 kg ha-1 and 0.28 kg ha-1 for NH4-N and NO3-N respectively. This study highlights the need for integrated nitrogen monitoring and assessment in South Asia.