生物地球化学的
The present paper reviews biogeochemical cycle of nitrogen in agroecosystem. 根据国外资料,综述了有机农业土壤氮素流失规律与防止措施。
In addition, its role in biogeochemical cycling is equally significant. 此外，它在生物地球化学循环方面也具有同样的重要作用。
One is the understanding of biogeochemical cycles of closed systems. 其一是对闭合系统的生物地球化学循环的理解。
This text summarizes the current status of and advances in nitrogen biogeochemical cycling and the possible problems. 文章全面综述了氮素生物地球化学过程研究的现状与进展及其可能存在的问题。
Silicon is an important mineral element on the earth, because of its crucial role in many biogeochemical processes. 硅是地球上重要的矿质元素,在许多生物地球化学过程中起着重要作用。
