Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1117/1.3571040 |
Mesquite encroachment impact on southern New Mexico rangelands: remote sensing and geographic information systems approach | |
Mohamed, Ahmed H.1; Holechek, Jerry L.1; Bailey, Derek W.1; Campbell, Carol L.2; DeMers, Michael N.2 | |
通讯作者 | Mohamed, Ahmed H. |
来源期刊 | JOURNAL OF APPLIED REMOTE SENSING |
ISSN | 1931-3195 |
出版年 | 2011 |
卷号 | 5 |
英文摘要 | Honey mesquite (Prosopis glandulosa Torr.) invasion can negatively impact grazing capacity, spatial livestock distribution, and forage production in Chihuahuan Desert rangelands. High spatial resolution remote sensing data can be used to develop maps of shrub encroachment for arid rangelands. The objective of this study was to map changes in honey mesquite abundance and to evaluate honey mesquite impacts on perennial grass production at the Chihuahuan Desert Rangeland Research Center in south-central New Mexico using high resolution satellite imagery. The project employed QuickBird ortho-ready satellite imagery with spatial resolution of 2.4 m in multispectral bands and panchromatic resolution of 0.6 m for the study area on May 19, 2009. We used a maximum likelihood supervised classification algorithm to distinguish honey mesquite from other land cover categories. We then measured grass production (kg/ha) in May, 2009 on 10 permanent, evenly spaced key areas in each pasture. We identified 12x60 m plots from the classified map and used these to calculate honey mesquite canopy cover on the 40 transects across the study area. Areas classified as dominated by honey mesquite estimated from image analyses encompassed 143, 50, 92, and 136 hectares in pastures 1, 4, 14, and 15, respectively. Regression analyses showed that increasing levels of honey mesquite canopy cover corresponded to lower perennial grass forage production (r(2) = 0.73, n = 40). Our findings indicate that classification of high-resolution satellite imagery is a very useful tool for mapping invasive shrubs and determining their influence on forage production in desert landscapes. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3571040] |
英文关键词 | QuickBird imagery arid rangelands remote sensing supervised classification forage production |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000289546700003 |
WOS关键词 | RESOLUTION SATELLITE IMAGERY ; CHIHUAHUAN DESERT VEGETATION ; GRASSLAND ; MANGROVE ; TEXAS ; COAST |
WOS类目 | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
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/2XILL650/168821 |
作者单位 | 1.New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA; 2.New Mexico State Univ, Dept Geog, Las Cruces, NM 88003 USA |
推荐引用方式 GB/T 7714 | Mohamed, Ahmed H.,Holechek, Jerry L.,Bailey, Derek W.,et al. Mesquite encroachment impact on southern New Mexico rangelands: remote sensing and geographic information systems approach[J]. New Mexico State University,2011,5. |
APA | Mohamed, Ahmed H.,Holechek, Jerry L.,Bailey, Derek W.,Campbell, Carol L.,&DeMers, Michael N..(2011).Mesquite encroachment impact on southern New Mexico rangelands: remote sensing and geographic information systems approach.JOURNAL OF APPLIED REMOTE SENSING,5. |
MLA | Mohamed, Ahmed H.,et al."Mesquite encroachment impact on southern New Mexico rangelands: remote sensing and geographic information systems approach".JOURNAL OF APPLIED REMOTE SENSING 5(2011). |
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