Effects of freezing intensity on soil solution nitrogen and microbial biomass nitrogen in an alpine grassland ecosystem on the Tibetan Plateau, China
文献类型：期刊论文
| 作者 | Yang Zhaoping1; Gao Jixi2; Yang Meng1; Sun Zhizhong3 |
| 刊名 | JOURNAL OF ARID LAND
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 8期号:5页码:749-759 |
| 关键词 | freezing temperature microbial biomass nitrogen dissolved organic nitrogen inorganic nitrogen alpine grassland Tibetan Plateau |
| ISSN号 | 1674-6767 |
| DOI | 10.1007/s40333-016-0012-0 |
| 通讯作者 | Gao Jixi(gjx@nies.org) |
| 英文摘要 | The change of freeze-thaw pattern of the Tibetan Plateau under climate warming is bound to have a profound impact on the soil process of alpine grassland ecosystem; however, the research on the impact of the freeze-thaw action on nitrogen processes of the alpine grassland ecosystem on the Tibetan Plateau has not yet attracted much attention. In this study, the impact of the freezing strength on the soil nitrogen components of alpine grassland on the Tibetan Plateau was studied through laboratory freeze-thaw simulation experiments. The 0-10 cm topsoil was collected from the alpine marsh meadow and alpine meadow in the permafrost region of Beilu River. In the experiment, the soil samples were cultivated at-10A degrees C,-7A degrees C,-5A degrees C,-3A degrees C and-1A degrees C, respectively for three days and then thawed at 2A degrees C for one day. The results showed that after the freeze-thaw process, the soil microbial biomass nitrogen significantly decreased while the dissolved organic nitrogen and inorganic nitrogen significantly increased. When the freezing temperature was below-7A degrees C, there was no significant difference between the content of nitrogen components, which implied a change of each nitrogen component might have a response threshold toward the freezing temperature. As the freeze-thaw process can lead to the risk of nitrogen loss in the alpine grassland ecosystem, more attention should be paid to the response of the soil nitrogen cycle of alpine grasslands on the Tibetan Plateau to the freeze-thaw process. |
| 收录类别 | SCI |
| WOS关键词 | THAW CYCLES ; ORGANIC-MATTER ; FOREST SOIL ; CLIMATE-CHANGE ; WINTER ; DYNAMICS ; COMMUNITY ; TUNDRA ; SNOW ; MINERALIZATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000378931000009 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557224 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Gao Jixi |
| 作者单位 | 1.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Nanjing 210044, Jiangsu, Peoples R China 2.Minist Environm Protect, Nanjing Inst Environm Sci, Nanjing 210042, Jiangsu, Peoples R China 3.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Zhaoping,Gao Jixi,Yang Meng,et al. Effects of freezing intensity on soil solution nitrogen and microbial biomass nitrogen in an alpine grassland ecosystem on the Tibetan Plateau, China[J]. JOURNAL OF ARID LAND,2016,8(5):749-759. |
| APA | Yang Zhaoping,Gao Jixi,Yang Meng,&Sun Zhizhong.(2016).Effects of freezing intensity on soil solution nitrogen and microbial biomass nitrogen in an alpine grassland ecosystem on the Tibetan Plateau, China.JOURNAL OF ARID LAND,8(5),749-759. |
| MLA | Yang Zhaoping,et al."Effects of freezing intensity on soil solution nitrogen and microbial biomass nitrogen in an alpine grassland ecosystem on the Tibetan Plateau, China".JOURNAL OF ARID LAND 8.5(2016):749-759. |
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来源：寒区旱区环境与工程研究所
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