Fencing as an effective approach for restoration of alpine meadows: Evidence from nutrient limitation of soil microbes
文献类型：期刊论文
| 作者 | Wang, Jie3 ; Wang, Xiangtao1; Liu, Guobin3,4; Wang, Guoliang3; Wu, Yang2; Zhang, Chao3
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| 刊名 | GEODERMA
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 363页码:10 |
| 关键词 | Fencing Soil extracellular enzymes Microbial nutrient limitation Alpine meadows |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2019.114148 |
| 通讯作者 | Zhang, Chao(zhangchao1985@nwafu.edu.cn) |
| 英文摘要 | The effects of restoration on plant communities and soil nutrients have been extensively studied but knowledge of the metabolic requirements of microbial communities is limited, especially in fragile alpine meadow ecosystems. Here, vegetation and soil from four meadows (grazed meadow, fenced meadow, fenced + reseeded meadow, and undegraded meadow) on the Tibetan Plateau were investigated. The nutrient requirements of microbes represented by stoichiometry of extracellular enzyme activities related to soil C, N, and P acquisition (beta-1,4-glucosidase, BG; beta-1,4-N-acetylglucosaminidase, NAG; leucine aminopeptidase, LAP; and alkaline phosphatase, AP) and their possible environmental drivers were determined. Our results showed that enzymatic C:N:P acquisition in all the meadows deviated from 1:1:1, suggesting that soil enzymatic activity stoichiometry in Tibetan alpine meadows is not homeostatic. Microbial communities in grazed meadows were co-limited by soil N and P levels, and this limitation was closely associated with the stoichiometry of soil nutrients. Activities of BG, NAG + LAP, AP, and their stoichiometry (C:N, C:P, and N:P) in fenced meadows were 38.2%, 32.9%, 51.2%, 16.8%, 19.5% and 2.3% higher than those in grazed meadows. These results indicate that fencing can relieve the N and P limitations for microbial communities in alpine meadows. Seeding the fenced meadow did not increase the soil nutrient content, microbial biomass, or enzyme activity compared with the fenced meadow, possibly owing to the low competition of the seeded species for resources. Changes in extracellular enzyme activity and stoichiometry were better explained by dissolved organic C and microbial biomass N than by plant or other soil properties. Our results demonstrate the effectiveness of fencing on the restoration of degraded alpine meadows from the perspective of alleviating microbial nutrient limitations. |
| WOS关键词 | EXTRACELLULAR ENZYME-ACTIVITIES ; TERM GRAZING EXCLUSION ; ECOENZYMATIC STOICHIOMETRY ; LOESS PLATEAU ; NITROGEN DEPOSITION ; EXTRACTION METHOD ; CARBON ; PHOSPHORUS ; GRASSLANDS ; ECOSYSTEM |
| 资助项目 | National Natural Sciences Foundation of China[41771554] ; Shaanxi Innovation Support Plan for Youth[2019KJXX-081] ; National Key Research and Development Program of China[2016YFC0501707] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000515198500014 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Sciences Foundation of China ; Shaanxi Innovation Support Plan for Youth ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/132908]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Chao |
| 作者单位 | 1.Xizang Agr & Anim Husb Coll, Dept Anim Sci, Linzhi 860000, Peoples R China 2.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jie,Wang, Xiangtao,Liu, Guobin,et al. Fencing as an effective approach for restoration of alpine meadows: Evidence from nutrient limitation of soil microbes[J]. GEODERMA,2020,363:10. |
| APA | Wang, Jie,Wang, Xiangtao,Liu, Guobin,Wang, Guoliang,Wu, Yang,&Zhang, Chao.(2020).Fencing as an effective approach for restoration of alpine meadows: Evidence from nutrient limitation of soil microbes.GEODERMA,363,10. |
| MLA | Wang, Jie,et al."Fencing as an effective approach for restoration of alpine meadows: Evidence from nutrient limitation of soil microbes".GEODERMA 363(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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