干旱区生态环境知识资源中心(Arid): Classification methods for detecting and evaluating changes in desertification-related features in arid and semiarid environments

Arid

DOI	10.1007/s41207-017-0021-1
	Classification methods for detecting and evaluating changes in desertification-related features in arid and semiarid environments
	Afrasinei, Gabriela-Mihaela; Melis, Maria Teresa; Buttau, Cristina; Arras, Claudio; Pistis, Marco; Zerrim, Amar; Guied, Messaoud; Ouessar, Mohamed; Essifi, Bouajila; Ben Zaied, Mongi; Jlali, Amor; Jarray, Hanen; Ghiglieri, Giorgio
通讯作者	Afrasinei, GM
来源期刊	EURO-MEDITERRANEAN JOURNAL FOR ENVIRONMENTAL INTEGRATION
ISSN	2365-6433
EISSN	2365-7448
出版年	2017
卷号	2 期号:1
英文摘要	Land cover, land use, soil salinization, and sand encroachment, which are desertification-indicating features, were integrated in a diachronic assessment, obtaining quantitative and qualitative information on the ecological state of the land, particularly degradation tendencies. In arid and semi-arid study areas of Algeria and Tunisia, sustainable development requires the understanding of these dynamics as it withstands the monitoring of desertification processes. Both visual interpretation and automated classification approaches have been set up for salt and sand features extraction using historical and present Landsat imagery. The automated one includes a decision tree classifier and an unsupervised classification applied to the principal components extracted from Knepper ratios composite. New spectral indices are employed in the decision tree classifier for the extraction of features of interest. The validation of the classification methods showed that the decision tree had an overall accuracy over 85% in both areas. Integrating results with ancillary spatial data, we could identify driving forces and estimate the metrics of desertification processes. In the Biskra area (Algeria), it emerged that the expansion of irrigated farmland in the past three decades has been contributing to an ongoing secondary salinization of soils, with an increase of over 75%. In the Oum Zessar area (Tunisia), there has been substantial change in several landscape components in the last decades related to increased anthropic pressure and settlement, agricultural policies, and national development strategies. One of the most concerning aspects is the expansion of sand-encroached areas over the last three decades of around 27%.
英文关键词	Salinization Sand encroachment Change detection Landsat imagery classification Land cover/use mapping Decision tree
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000459072300013
WOS类目	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/2XILL650/332651
作者单位	[Afrasinei, Gabriela-Mihaela; Buttau, Cristina; Arras, Claudio; Pistis, Marco; Ghiglieri, Giorgio] Univ Cagliari, Dept Chem & Geol Sci, Lab TeleGis, Via Trentino 51, I-09127 Cagliari, Italy; [Arras, Claudio; Ghiglieri, Giorgio] Univ Sassari, Desertificat Res Ctr NRD, Viale Italia 39, I-07100 Sassari, Italy; [Zerrim, Amar; Guied, Messaoud; Ouessar, Mohamed; Essifi, Bouajila; Ben Zaied, Mongi; Jlali, Amor; Jarray, Hanen] IRA, Route Djorf Km 22-5, Medenine, Tunisia
推荐引用方式 GB/T 7714	Afrasinei, Gabriela-Mihaela,Melis, Maria Teresa,Buttau, Cristina,et al. Classification methods for detecting and evaluating changes in desertification-related features in arid and semiarid environments[J],2017,2(1).
APA	Afrasinei, Gabriela-Mihaela.,Melis, Maria Teresa.,Buttau, Cristina.,Arras, Claudio.,Pistis, Marco.,...&Ghiglieri, Giorgio.(2017).Classification methods for detecting and evaluating changes in desertification-related features in arid and semiarid environments.EURO-MEDITERRANEAN JOURNAL FOR ENVIRONMENTAL INTEGRATION,2(1).
MLA	Afrasinei, Gabriela-Mihaela,et al."Classification methods for detecting and evaluating changes in desertification-related features in arid and semiarid environments".EURO-MEDITERRANEAN JOURNAL FOR ENVIRONMENTAL INTEGRATION 2.1(2017).