干旱区生态环境知识资源中心(Arid): Spatio-Temporal Assessment of Changing Land Surface Temperature and Depleting Water in the Lake Chad Area

Arid

DOI	10.4314/sajg.v8i2.3
	Spatio-Temporal Assessment of Changing Land Surface Temperature and Depleting Water in the Lake Chad Area
	Nwilo, P. C.; Umar, A. A.; Adepoju, M. O.; Okolie, C. J.
通讯作者	Okolie, CJ
来源期刊	SOUTH AFRICAN JOURNAL OF GEOMATICS
ISSN	2225-8531
出版年	2019
卷号	8 期号:2 页码:144-159
英文摘要	Lake Chad is located at the south of the Sahara Desert in an arid region. The lake's water resources are under severe pressure due to the basic needs of the growing population around the lake, global warming, and increasing irrigation demands. Numerous land cover change studies have measured the rate of depletion of the lake's surface water. However, the contribution of the increasing high temperatures in the region which is also a compounding factor has received little attention. In this study, an assessment of the changes in surface water extent of Lake Chad from 1973-2017 was carried out through a land cover analysis. The potential influence of the rising land surface temperatures on the water losses was also studied. The extraction of the land cover was done using maximum likelihood classification. The results show that between 1973 and 1987, the lake lost 12,796.81km(2) of its surface water area. This period coincided with a season of drought and dry seasons reported to have occurred in the lake's area during the 1970s. Between 1987 and 2003, average temperature rise and change in surface water area was +1.54 degrees C and +962.71km(2) respectively. Between 2003 and 2017, average temperature rise and change in surface water area was +3.69 degrees C and -25.17km(2) respectively. These results provide further evidence of the alarming rate of water loss in the lake's environment, and suggest a link between rising land surface temperatures and diminution of the lake's water. The findings inform efforts directed at addressing the ecological problem facing the lake.
英文关键词	Land Surface Temperature Land Cover Surface water Landsat Lake Chad
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000486443800003
WOS关键词	LIVELIHOOD ; RETRIEVAL
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333805
作者单位	[Nwilo, P. C.; Umar, A. A.; Okolie, C. J.] Univ Lagos, Fac Engn, Dept Surveying & Geoinformat, Lagos, Nigeria; [Adepoju, M. O.] Natl Space Res & Dev Agcy, Abuja, Nigeria
推荐引用方式 GB/T 7714	Nwilo, P. C.,Umar, A. A.,Adepoju, M. O.,et al. Spatio-Temporal Assessment of Changing Land Surface Temperature and Depleting Water in the Lake Chad Area[J],2019,8(2):144-159.
APA	Nwilo, P. C.,Umar, A. A.,Adepoju, M. O.,&Okolie, C. J..(2019).Spatio-Temporal Assessment of Changing Land Surface Temperature and Depleting Water in the Lake Chad Area.SOUTH AFRICAN JOURNAL OF GEOMATICS,8(2),144-159.
MLA	Nwilo, P. C.,et al."Spatio-Temporal Assessment of Changing Land Surface Temperature and Depleting Water in the Lake Chad Area".SOUTH AFRICAN JOURNAL OF GEOMATICS 8.2(2019):144-159.