Response of soil extracellular enzyme activity to experimental precipitation in a shrub-encroached grassland in Inner Mongolia
文献类型：期刊论文
| 作者 | Akinyemi, Damilare Stephen1; Zhu, Yankun1; Zhao, Mengying1; Zhang, Pujin3,4; Shen, Haihua1; Fang, Jingyun1
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| 刊名 | GLOBAL ECOLOGY AND CONSERVATION
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| 出版日期 | 2020 |
| 卷号 | 23 |
| 关键词 | Altered precipitation Climate change Extracellular enzyme Shrub encroachment Soil |
| DOI | 10.1016/j.gecco.2020.e01175 |
| 文献子类 | Article |
| 英文摘要 | Shrub encroachment has caused a vegetation shift in arid and semiarid grassland ecosystems around the world, leading to marked changes in ecosystem structures and functions. Soil extracellular enzyme activity (EEA) is an informative indicator of microbial decomposition and plays an important role in soil biogeochemical cycles, but it is unclear how shrub encroachment affects soil EEA, especially in the future precipitation pattern under climate change. In this study, we measured soil EEAs in a shrub-encroached grassland in Inner Mongolia, China, after four years of in situ experimental precipitation manipulation. Soil samples were collected from grass patches and shrub patches in four precipitation manipulation treatments (-30%, control, +30%, and +50%). Four soil enzymes involved in carbon cycling (alpha-glucosidase, AG; beta-1,4-glucosidase, BG; beta-D-cellobiosidase, CB; and beta-xylosidase, XS), two nitrogen-acquiring enzymes (beta-1,4-N-acetylglucosaminidase, NAG; and leucine amino peptidase, LAP), and one phosphorus-acquiring enzyme (acid phosphatase, AP) were investigated. The results showed that BG, XS, and LAP activities were significantly enhanced in shrub patches than grass patches (p < 0.05). BG, LAP, and AP were significantly different in precipitation treatments (p < 0.05) and were highest in +30% and shrub patches. Shrub encroachment and increased precipitation (+30%) interactively enhanced LAP (p < 0.05). Our study also showed that soil temperature and soil moisture were major factors for the variations in EEA under different precipitation treatments in the grass patches, while soil temperature, NH4+-N and NO3-N were major causes for those in the shrub patches. Overall, our study highlights that shrub encroachment and altered precipitation can influence soil EEA, which in turn may have consequential effects on nutrients availability and biochemical cycling. (c) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 学科主题 | Biodiversity Conservation ; Ecology |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 2351-9894 |
| WOS关键词 | MICROBIAL BIOMASS C ; PHENOL OXIDASE ; PLANT INVASION ; CARBON ; ECOSYSTEM ; COMMUNITY ; DYNAMICS ; PULSE ; TEMPERATURE ; KINETICS |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000568729100006 |
| 出版者 | ELSEVIER |
| 资助机构 | National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330012, 31971747] ; National Key Research and Development Program [2017YFC0503901] ; Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-SMC011] ; CAS-TWAS President's Fellowship |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21590]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010031, Inner Mongolia, Peoples R China 3.Chinese Acad Sci, Inner Mongolia Prataculture Res Ctr, Hohhot 010031, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Akinyemi, Damilare Stephen,Zhu, Yankun,Zhao, Mengying,et al. Response of soil extracellular enzyme activity to experimental precipitation in a shrub-encroached grassland in Inner Mongolia[J]. GLOBAL ECOLOGY AND CONSERVATION,2020,23. |
| APA | Akinyemi, Damilare Stephen,Zhu, Yankun,Zhao, Mengying,Zhang, Pujin,Shen, Haihua,&Fang, Jingyun.(2020).Response of soil extracellular enzyme activity to experimental precipitation in a shrub-encroached grassland in Inner Mongolia.GLOBAL ECOLOGY AND CONSERVATION,23. |
| MLA | Akinyemi, Damilare Stephen,et al."Response of soil extracellular enzyme activity to experimental precipitation in a shrub-encroached grassland in Inner Mongolia".GLOBAL ECOLOGY AND CONSERVATION 23(2020). |
入库方式： OAI收割
来源：植物研究所
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