生物地球化學(xué)的

The present paper reviews biogeochemical cycle of nitrogen in agroecosystem. 根據(jù)國(guó)外資料,綜述了有機(jī)農(nóng)業(yè)土壤氮素流失規(guī)律與防止措施。

In addition, its role in biogeochemical cycling is equally significant. 此外，它在生物地球化學(xué)循環(huán)方面也具有同樣的重要作用。

One is the understanding of biogeochemical cycles of closed systems. 其一是對(duì)閉合系統(tǒng)的生物地球化學(xué)循環(huán)的理解。

This text summarizes the current status of and advances in nitrogen biogeochemical cycling and the possible problems. 文章全面綜述了氮素生物地球化學(xué)過(guò)程研究的現(xiàn)狀與進(jìn)展及其可能存在的問(wèn)題。

Silicon is an important mineral element on the earth, because of its crucial role in many biogeochemical processes. 硅是地球上重要的礦質(zhì)元素,在許多生物地球化學(xué)過(guò)程中起著重要作用。