Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2111/.1/REM-D-09-00065.1 |
Modeling Bare Ground With Classification Trees in Northern Spain | |
Weber, Keith T.1; Alados, Concepcion L.2; Guillermo Bueno, C.3; Gokhale, Bhushan1; Komac, Benjamin2; Pueyo, Yolanda4 | |
通讯作者 | Weber, Keith T. |
来源期刊 | RANGELAND ECOLOGY & MANAGEMENT
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ISSN | 1550-7424 |
EISSN | 1551-5028 |
出版年 | 2009 |
卷号 | 62期号:5页码:452-459 |
英文摘要 | Bare ground abundance is an important rangeland health indicator and its detection is a fundamental part of range management. Remote sensing of bare ground might offer solutions for land managers but also presents challenges as modeling in semiarid environments usually involves a high frequency of spectral mixing within pixels. Classification tree analysis (CTA) and maximum likelihood classifiers were used to model bare ground in the semiarid steppes of the middle Ebro valley, Aragon, Spain using Satellite Pour l’Observation de la Terre 4 (SPOT 4) imagery and topographic data such as elevation, slope, aspect, and a morphometric characterization model. A total of 374 sample points of bare-ground fraction from sixteen 500-m transects were used in the classification and validation process. Overall accuracies were 85% (Kappa statistic = 0.70) and 57% (Kappa statistic = 0.13) from the CTA and maximum likelihood classifiers, respectively. Although spectral attributes were essential in bare-ground classification, the topographic and morphometric properties of the landscape were equally critical in this modeling effort. Although the specific layers best suited for each specific model will vary from region to region, this study provided an important insight on both bare-ground modeling and the potential advantages of CTA. |
英文关键词 | classification tree analysis desertification geographic information systems (GIS) rangelands remote sensing |
类型 | Article ; Proceedings Paper |
语种 | 英语 |
国家 | USA ; Spain |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000270240000009 |
WOS关键词 | DISCRIMINANT-ANALYSIS ; WIND EROSION ; SOIL ; VEGETATION ; FRAGMENTATION ; INDICATORS ; ACCURACY ; PATTERNS |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/162399 |
作者单位 | 1.Idaho State Univ, GIS Training & Res Ctr, Pocatello, ID 83209 USA; 2.CSIC, Inst Pirena Ecol, Zaragoza 50192, Spain; 3.CSIC, Inst Pirena Ecol, Jaca 22700, Spain; 4.Univ Zaragoza, Dept Geog, E-50009 Zaragoza, Spain |
推荐引用方式 GB/T 7714 | Weber, Keith T.,Alados, Concepcion L.,Guillermo Bueno, C.,et al. Modeling Bare Ground With Classification Trees in Northern Spain[J],2009,62(5):452-459. |
APA | Weber, Keith T.,Alados, Concepcion L.,Guillermo Bueno, C.,Gokhale, Bhushan,Komac, Benjamin,&Pueyo, Yolanda.(2009).Modeling Bare Ground With Classification Trees in Northern Spain.RANGELAND ECOLOGY & MANAGEMENT,62(5),452-459. |
MLA | Weber, Keith T.,et al."Modeling Bare Ground With Classification Trees in Northern Spain".RANGELAND ECOLOGY & MANAGEMENT 62.5(2009):452-459. |
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