Ge Zhiwei, An Ran, Fang Shuiyuan, Lin Pengpeng, Li Chuan, Xue Jianhui, Yu Shuiqiang
Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
Department of Veterinary and Biomedical Science, College of Veterinary Medicine, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA.
Scientifica (Cairo). 2017;2017:8539093. doi: 10.1155/2017/8539093. Epub 2017 Feb 19.
Aquatic plants play an essential role and are effective in mitigating lake eutrophication by forming complex plant-soil system and retaining total nitrogen (TN) and phosphorus (TP) in soils to ultimately reduce their quantities in aquatic systems. Two main vegetation types ( community and + community) of Qin Lake wetland were sampled in this study for the analysis of TN and TP contents and reserves in the wetland soils. The results showed that (1) the consumption effect of Qin Lake wetland on soluble N was much more significant than on soluble P. (2) The efficiency of TN enrichment in wetland soil was enhanced by vegetation covering of and . (3) Wetland soil P was consumed by community and this pattern was relieved with the introduction of . (4) According to the grey relativity analysis, the most intensive interaction between plants and soil occurred in summer. In addition, the exchange of N in soil-vegetation system primarily occurred in the 0-15 cm soil layer. Our results indicated that vegetation covering was essential to the enrichment of TN and TP, referring to the biology-related fixation in the wetland soil.
水生植物通过形成复杂的植物 - 土壤系统，并在土壤中保留总氮（TN）和磷（TP），最终减少其在水生系统中的含量，从而在缓解湖泊富营养化方面发挥着重要作用且效果显著。本研究对溱湖湿地的两种主要植被类型（群落和 + 群落）进行了采样，以分析湿地土壤中TN和TP的含量及储量。结果表明：（1）溱湖湿地对可溶性氮的消耗作用比对可溶性磷的消耗作用更为显著。（2） 和 的植被覆盖提高了湿地土壤中TN的富集效率。（3） 群落消耗湿地土壤中的磷，而随着 的引入，这种模式得到缓解。（4）根据灰色关联分析，植物与土壤之间最强烈的相互作用发生在夏季。此外，土壤 - 植被系统中氮的交换主要发生在0 - 15厘米的土壤层。我们的结果表明，植被覆盖对于TN和TP的富集至关重要，这涉及到湿地土壤中的生物相关固定作用。
