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DOI	10.19182/bft2019.344.a31897
	Assessing land cover change in Namibia's Kavango East region: a multi-date object approach
	Muhoko, Edward; De Wasseige, Carlos; De Cauwer, Vera
通讯作者	Muhoko, E
来源期刊	BOIS ET FORETS DES TROPIQUES
ISSN	0006-579X
EISSN	1777-5760
出版年	2020
期号	344 页码:17-32
英文摘要	Land cover change is a global issue but its effects can be particularly severe in developing countries such as Namibia, by affecting the ecological functions of ecosystems and hence sustainable development. Namibia's arid conditions, due to low rainfall and high evapotranspiration rates, coupled with annual savannah fires, have resulted in a heterogenous landscape composed of a mixture of trees, shrubs and herbaceous plants. As a result, land cover maps are often inaccurate at the pixel level. Despite their relatively high accuracy, object-based image analyses are yet to be exhaustively applied to the dry tropical forests of Southern Africa. The purpose of this study was to apply a multi-date object-based approach to land cover change, in order to determine its extent and dynamics in the heterogenous landscape of Kavango East, one of the regions with the highest forest cover in Namibia. Multi-date segmentation, mean band values and image differentiation were used to detect land cover changes in four periods (1990, 2000, 2009 and 2016). The most common land conversion for all the periods was from forest to cropland. In 1990, forests covered 58% of the land but by 2016, this had dropped to 55%. Meanwhile, cropland covered 3% of the study area in 1990 and had doubled to 6% by 2016. The novel approach used in this study has produced promising results compared to traditional methods, which are prone to errors in detecting post-classification changes. The method can therefore be recommended for long term monitoring of land cover and land use change in areas with similar environmental and biophysical conditions.
英文关键词	period land cover change land cover classification Landsat multi-date segmentation trajectory object-based classification Namibia
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000562593500002
WOS关键词	MODIS ; AVHRR ; ETM+
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325819
作者单位	[Muhoko, Edward] Minist Environm Forestry & Tourism, Directorate Forestry, Private Bag 13306, Windhoek, Namibia; [Muhoko, Edward] Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res BayCEER, Dept Plant Ecol, Univ Str 30, D-95447 Bayreuth, Germany; [De Wasseige, Carlos] Namibia Univ Sci & Technol, Dept Geospatial Sci & Technol, Private Bag 13388, Windhoek, Namibia; [De Wasseige, Carlos] Syst Informat Reference Spatiale SIRS, 27 Rue Carrousel,Parc Cimaise, F-59650 Villeneuve Dascq, France; [De Cauwer, Vera] Namibia Univ Sci & Technol, Dept Agr & Nat Resources Sci, Private Bag 13388, Windhoek, Namibia
推荐引用方式 GB/T 7714	Muhoko, Edward,De Wasseige, Carlos,De Cauwer, Vera. Assessing land cover change in Namibia's Kavango East region: a multi-date object approach[J],2020(344):17-32.
APA	Muhoko, Edward,De Wasseige, Carlos,&De Cauwer, Vera.(2020).Assessing land cover change in Namibia's Kavango East region: a multi-date object approach.BOIS ET FORETS DES TROPIQUES(344),17-32.
MLA	Muhoko, Edward,et al."Assessing land cover change in Namibia's Kavango East region: a multi-date object approach".BOIS ET FORETS DES TROPIQUES .344(2020):17-32.