全文总字数：2756字

1. 1. 毕业设计（论文）的内容、要求、设计方案、规划等

研究目的：明确不同土地利用方式下沉积物中den速率，分别从理化性质及土壤微生物结构多样性角度解释其变化差异，进一步得到其决定性因素，为预估与调控温室气体n2o的产生提供理论依据。

一、文献综述（重点）

认真阅读指定文献并查阅其他相关文献，按照以下方面撰写文献综述：

2. 参考文献（不低于12篇）

[1] r. d. delaune, a. jugsujinda. denitrification potential in a louisiana wetland receiving diverted mississippi river water[j]. chemistry ecology, 2003, 19(6):411-418.

[2]hunt p g, miller j o, ducey t f, et al. denitrification in soils of hydrologically restored wetlands relative to natural and converted wetlands in the mid-atlantic coastal plain of the usa[j]. ecological engineering, 2014, 71(71):438-447.

[3]hooda a k, weston c j, chen d. denitrification in effluent-irrigated clay soil under eucalyptus globulus, plantation in south-eastern australia[j]. forest ecology management, 2003, 179(1):547-558.