干旱区生态环境知识资源中心(Arid): Temporal Analysis of Land Use Changes in River Segura Basin using Remote Sensing. Implications on Desertification

Arid

	Temporal Analysis of Land Use Changes in River Segura Basin using Remote Sensing. Implications on Desertification
	Alonso Sarria, F.; Gomariz Castillo, F.; Canovas Garcia, F.
通讯作者	Sarria, FA
来源期刊	CUATERNARIO Y GEOMORFOLOGIA
ISSN	0214-1744
出版年	2010
卷号	24 期号:3-4 页码:73-88
英文摘要	Land use change is a dynamic process that affects heavily to different environmental processes. In this work, a GIS application is designed to analyse land use changes from landsat imagery since 1976 to 2007, a period with important socioeconomic and land use changes in River Segura Basin. This work describes the methodology used to obtain a yearly series of land cover maps of the Demarcacion Hidrografica del Segura (River Segura basin in South East Spain). In order to analyze this great amount of information for a large (more than 18,000 km2) and heterogeneous area, a unified methodology has been developed. It has been used a supervised classification improved by a previous not supervised classification using both spectral (4 or 6 landsat solar spectrum bands depending on the sensor available, MSS or TM, ETM) and two textural variables. The last ones were obtained estimating the semivariogram frunction from the albedo and NDVI layers. Having used two images from different seasons, the total number of variables included in the classification is 12 or 16 depending on the year. Preliminary results show a reduction of the surfaces with traditional dry crop uses and the important increase of irrigation lands during the first half of the 1980s decade. The increase in bare soil areas also reflects the abandonment of traditional crops. Finally, it has been observed an increase in urban areas attributable to demographic trends.
英文关键词	Remote Sensing River Segura Basin Landsat Geographic information system
类型	Article
语种	西班牙语
收录类别	ESCI
WOS记录号	WOS:000215016700006
WOS关键词	SOIL-EROSION
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329442
作者单位	[Alonso Sarria, F.; Gomariz Castillo, F.; Canovas Garcia, F.] Univ Murcia, Inst Agua & Med Ambiente, Campus Espinardo, E-30001 Murcia, Spain
推荐引用方式 GB/T 7714	Alonso Sarria, F.,Gomariz Castillo, F.,Canovas Garcia, F.. Temporal Analysis of Land Use Changes in River Segura Basin using Remote Sensing. Implications on Desertification[J],2010,24(3-4):73-88.
APA	Alonso Sarria, F.,Gomariz Castillo, F.,&Canovas Garcia, F..(2010).Temporal Analysis of Land Use Changes in River Segura Basin using Remote Sensing. Implications on Desertification.CUATERNARIO Y GEOMORFOLOGIA,24(3-4),73-88.
MLA	Alonso Sarria, F.,et al."Temporal Analysis of Land Use Changes in River Segura Basin using Remote Sensing. Implications on Desertification".CUATERNARIO Y GEOMORFOLOGIA 24.3-4(2010):73-88.