Grazing effects on surface energy fluxes in a desert steppe on the Mongolian Plateau
文献类型：期刊论文
| 作者 | Shao, Changliang; Chen, Jiquan; Li, Linghao1 ; Dong, Gang2; Han, Juanjuan1; Abraha, Michael; John, Ranjeet
|
| 刊名 | ECOLOGICAL APPLICATIONS
 |
| 出版日期 | 2017 |
| 卷号 | 27期号:2页码:485-502 |
| 关键词 | available energy cooling effect ecosystem function ecosystem stability eddy-covariance energy balance energy partitioning land use change latent heat net radiation sensible heat soil heat |
| ISSN号 | 1051-0761 |
| DOI | 10.1007/s00442-017-3842-3 |
| 文献子类 | Article |
| 英文摘要 | Quantifying the surface energy fluxes of grazed and ungrazed steppes is essential to understand the roles of grasslands in local and global climate and in land use change. We used paired eddy-covariance towers to investigate the effects of grazing on energy balance (EB) components: net radiation (R-n), latent heat (LE), sensible heat (H), and soil heat (G) fluxes on adjacent grazed and ungrazed areas in a desert steppe of the Mongolian Plateau for a two-year period (2010-2012). Near 95% of R-n was partitioned as LE and H, whereas the contributions of G and other components of the EB were 5% at an annual scale. H dominated the energy partitioning and shared similar to 50% of R-n. When comparing the grazed and the ungrazed desert steppe, there was remarkably lower R-n and a lower H, but higher G at the grazed site than at the ungrazed site. Both reduced available energy (R-n - G) and H indicated a cooling effect feedback onto the local climate through grazing. Grazing reduced the dry year LE but enhanced the wet year LE. Energy partitioning of LE/R-n was positively correlated with the canopy conductivity, leaf area index, and soil moisture. H/R-n was positively correlated with the vapor pressure deficit but negatively correlated with the soil moisture. Boosted regression tree results showed that LE/R-n was dominated by soil moisture in both years and at both sites, while grazing shifted the H/R-n domination from temperature to soil moisture in the wet year. Grazing not only caused an LE shift between the dry and the wet year, but also triggered a decrease in the H/R-n because of changes in vegetation and soil properties, indicating that the ungrazed area had a greater resistance while the grazed area had a greater sensitivity of EB components to the changing climate. |
| 学科主题 | Environmental Sciences & Ecology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1939-5582 |
| WOS关键词 | NET ECOSYSTEM EXCHANGE ; WATER-USE EFFICIENCY ; INNER-MONGOLIA ; CHANGING CLIMATE ; BALANCE CLOSURE ; CARBON FLUXES ; HEAT-FLUX ; EVAPOTRANSPIRATION ; VARIABILITY ; DROUGHT |
| 语种 | 英语 |
| WOS记录号 | WOS:000400369200016 |
| 出版者 | WILEY |
| 资助机构 | Dynamics of Coupled Natural and Human Systems (CNH) Program of the NSFNational Science Foundation (NSF)NSF - Directorate for Biological Sciences (BIO) [1313761] ; LCLUC program of NASA [NNX14AD85G] ; Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31170454] ; USCCC |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/22177]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Michigan State Univ, Ctr Global Change & Earth Observat, E Lansing, MI 48823 USA 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Shanxi Univ, Sch Life Sci, Taiyuan 030006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shao, Changliang,Chen, Jiquan,Li, Linghao,et al. Grazing effects on surface energy fluxes in a desert steppe on the Mongolian Plateau[J]. ECOLOGICAL APPLICATIONS,2017,27(2):485-502. |
| APA | Shao, Changliang.,Chen, Jiquan.,Li, Linghao.,Dong, Gang.,Han, Juanjuan.,...&John, Ranjeet.(2017).Grazing effects on surface energy fluxes in a desert steppe on the Mongolian Plateau.ECOLOGICAL APPLICATIONS,27(2),485-502. |
| MLA | Shao, Changliang,et al."Grazing effects on surface energy fluxes in a desert steppe on the Mongolian Plateau".ECOLOGICAL APPLICATIONS 27.2(2017):485-502. |
入库方式： OAI收割
来源：植物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。