Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075922 |
Chlorophyll Fluorescence Better Captures Seasonal and Interannual Gross Primary Productivity Dynamics Across Dryland Ecosystems of Southwestern North America | |
Smith, W. K.1; Biederman, J. A.2; Scott, R. L.2; Moore, D. J. P.1; He, M.3; Kimball, J. S.3; Yan, D.1; Hudson, A.1; Barnes, M. L.1; MacBean, N.1; Fox, A. M.1; Litvak, M. E.4 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:748-757 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Satellite remote sensing provides unmatched spatiotemporal information on vegetation gross primary productivity (GPP). Yet understanding of the relationship between GPP and remote sensing observations and how it changes with factors such as scale, biophysical constraint, and vegetation type remains limited. This knowledge gap is especially apparent for dryland ecosystems, which have characteristic high spatiotemporal variability and are under-represented by long-term field measurements. Here we utilize an eddy covariance (EC) data synthesis for southwestern North America in an assessment of how accurately satellite-derived vegetation proxies capture seasonal to interannual GPP dynamics across dryland gradients. We evaluate the enhanced vegetation index, solar-induced fluorescence (SIF), and the photochemical reflectivity index. We find evidence that SIF is more accurately capturing seasonal GPP dynamics particularly for evergreen-dominated EC sites and more accurately estimating the full magnitude of interannual GPP dynamics for all dryland EC sites. These results suggest that incorporation of SIF could significantly improve satellite-based GPP estimates. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300031 |
WOS关键词 | LIGHT-USE-EFFICIENCY ; SEMIARID ECOSYSTEMS ; TERRESTRIAL GROSS ; CARBON BALANCE ; SATELLITE ; PHOTOSYNTHESIS ; INDEX ; MODEL ; MODIS ; AVAILABILITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27386 |
专题 | 气候变化 |
作者单位 | 1.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA; 2.ARS, Southwest Watershed Res Ctr, USDA, Tucson, AZ USA; 3.Univ Montana, Coll Forestry & Conservat, Numer Terradynam Simulat Grp, Missoula, MT 59812 USA; 4.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA |
推荐引用方式 GB/T 7714 | Smith, W. K.,Biederman, J. A.,Scott, R. L.,et al. Chlorophyll Fluorescence Better Captures Seasonal and Interannual Gross Primary Productivity Dynamics Across Dryland Ecosystems of Southwestern North America[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):748-757. |
APA | Smith, W. K..,Biederman, J. A..,Scott, R. L..,Moore, D. J. P..,He, M..,...&Litvak, M. E..(2018).Chlorophyll Fluorescence Better Captures Seasonal and Interannual Gross Primary Productivity Dynamics Across Dryland Ecosystems of Southwestern North America.GEOPHYSICAL RESEARCH LETTERS,45(2),748-757. |
MLA | Smith, W. K.,et al."Chlorophyll Fluorescence Better Captures Seasonal and Interannual Gross Primary Productivity Dynamics Across Dryland Ecosystems of Southwestern North America".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):748-757. |
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