Enzyme Activities and Microbial Communities in Subtropical Forest Soil Aggregates to Ammonium and Nitrate-Nitrogen Additions
文献类型：期刊论文
| 作者 | Wei Yan1; Wang Zhongqiang1; Zhang Xinyu2 ; Yang Hao1; Liu Xiyu1; Liu Wenjing1
|
| 刊名 | Journal of Resources and Ecology
 |
| 出版日期 | 2017 |
| 卷号 | 8期号:3页码:258 |
| 关键词 | 硝态氮 铵态氮 土壤团聚体 酶活性 磷脂脂肪酸 |
| ISSN号 | 1674-764X |
| 英文摘要 | A laboratory incubation experiment was established to examine the impacts of nitrate and ammonium nitrogen additions on soil microbial attributes of a subtropical Pinus elliottii forest ecosystem in southern China. Soils were subjected to three different treatments: the control with no nitrogen addition (CK), the ammonium nitrogen addition (NH_4~+ -N), and the nitrate nitrogen addition (NO_3~- -N). Samples from bulk and two different size fractions (macroaggregate (>250 μm) and microaggregate (53–250 μm)) were analyzed for soil properties, enzyme activities and microbial communities on day 7 and 15 of the incubation. Our study demonstrated that NH_4~+ -N had a greater influence on soil microbial activities than NO_3~- -N. NH_4~+ -N additions resulted in significant increases in β~(-1),4-glucosidase (βG) and β~(-1),4-N-acetyl glucosaminidase (NAG) enzyme activities in bulk, macroaggregate and microaggregate soils after 7 and 15 days incubation. NO_3~- -N additions only significantly increased in βG and NAG enzyme activities in bulk, macroaggregate soils after 7 and 15 days incubation, but not in microaggregate. All NH_4~+ -N and NO_3~- -N additions resulted in significant increases in gram-positive bacterial PLFAs in microaggregates. Only a significant correlation between soil nutrient contents and enzyme activities in macroaggregates was founded, which suggests that the soil aggregation structure played an important role in the determining enzyme activities. |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/152607]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.东北师范大学 2.中国科学院地理科学与资源研究所 |
| 推荐引用方式 GB/T 7714 | Wei Yan,Wang Zhongqiang,Zhang Xinyu,et al. Enzyme Activities and Microbial Communities in Subtropical Forest Soil Aggregates to Ammonium and Nitrate-Nitrogen Additions[J]. Journal of Resources and Ecology,2017,8(3):258. |
| APA | Wei Yan,Wang Zhongqiang,Zhang Xinyu,Yang Hao,Liu Xiyu,&Liu Wenjing.(2017).Enzyme Activities and Microbial Communities in Subtropical Forest Soil Aggregates to Ammonium and Nitrate-Nitrogen Additions.Journal of Resources and Ecology,8(3),258. |
| MLA | Wei Yan,et al."Enzyme Activities and Microbial Communities in Subtropical Forest Soil Aggregates to Ammonium and Nitrate-Nitrogen Additions".Journal of Resources and Ecology 8.3(2017):258. |
入库方式： OAI收割
来源：地理科学与资源研究所
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