Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/rs9101071 |
Phenocams Bridge the Gap between Field and Satellite Observations in an Arid Grassland Ecosystem | |
Browning, Dawn M.1; Karl, Jason W.2; Morin, David3; Richardson, Andrew D.4,5; Tweedie, Craig E.6 | |
通讯作者 | Browning, Dawn M. |
来源期刊 | REMOTE SENSING
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ISSN | 2072-4292 |
出版年 | 2017 |
卷号 | 9期号:10 |
英文摘要 | Near surface (i.e., camera) and satellite remote sensing metrics have become widely used indicators of plant growing seasons. While robust linkages have been established between field metrics and ecosystem exchange in many land cover types, assessment of how well remotely-derived season start and end dates depict field conditions in arid ecosystems remain unknown. We evaluated the correspondence between field measures of start (SOS; leaves unfolded and canopy greenness >0) and end of season (EOS) and canopy greenness for two widespread species in southwestern U.S. ecosystems with those metrics estimated from near-surface cameras and MODIS NDVI for five years (2012-2016). Using Timesat software to estimate SOS and EOS from the phenocam green chromatic coordinate (GCC) greenness index resulted in good agreement with ground observations for honey mesquite but not black grama. Despite differences in the detectability of SOS and EOS for the two species, GCC was significantly correlated with field estimates of canopy greenness for both species throughout the growing season. MODIS NDVI for this arid grassland site was driven by the black grama signal although a mesquite signal was discernable in average rainfall years. Our findings suggest phenocams could help meet myriad needs in natural resource management. |
英文关键词 | phenology phenocam drylands instrument intercomparison ecological scaling ecosystem productivity USA-NPN protocols growing season unfolded leaves rangeland |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000414650600101 |
WOS关键词 | DIGITAL REPEAT PHOTOGRAPHY ; CLIMATE-CHANGE ; PHENOLOGICAL RESPONSE ; RESOURCE-MANAGEMENT ; FOREST PHENOLOGY ; TIME-SERIES ; VEGETATION ; COVER ; MODIS ; VARIABILITY |
WOS类目 | Remote Sensing |
WOS研究方向 | Remote Sensing |
来源机构 | New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201969 |
作者单位 | 1.USDA ARS, Jornada Expt Range, POB 30003, Las Cruces, NM 88003 USA; 2.Univ Idaho, Dept Forest Rangeland & Fire Sci, Moscow, ID 83844 USA; 3.New Mexico State Univ, Jornada Expt Range, POB 30003,MSC 3JER, Las Cruces, NM 88003 USA; 4.No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86011 USA; 5.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA; 6.Univ Texas El Paso, Dept Biol Sci, El Paso, TX 79968 USA |
推荐引用方式 GB/T 7714 | Browning, Dawn M.,Karl, Jason W.,Morin, David,et al. Phenocams Bridge the Gap between Field and Satellite Observations in an Arid Grassland Ecosystem[J]. New Mexico State University,2017,9(10). |
APA | Browning, Dawn M.,Karl, Jason W.,Morin, David,Richardson, Andrew D.,&Tweedie, Craig E..(2017).Phenocams Bridge the Gap between Field and Satellite Observations in an Arid Grassland Ecosystem.REMOTE SENSING,9(10). |
MLA | Browning, Dawn M.,et al."Phenocams Bridge the Gap between Field and Satellite Observations in an Arid Grassland Ecosystem".REMOTE SENSING 9.10(2017). |
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