Climatic and human impacts on sediment fluxes of river basins in Cameroon with contrasting land cover

被引：0

作者：

Sigha-Nkamdjou, L. ^{[1
]}

Sighomnou, D. ^{[1
]}

Lienou, G. ^{[1
]}

Ndam, J. R. ^{[1
]}

Bello, M. ^{[1
]}

Kamgang, R. ^{[1
]}

Ekodeck, G. E. ^{[1
]}

Ouafo, M. R. ^{[1
]}

Mahe, G. ^{[1
]}

Paturel, J. E. ^{[1
]}

Servat, E. ^{[1
]}

机构：

[1] IRGM, Ctr Rech Hydrol, Yaounde, Cameroon

来源：

SEDIMENT BUDGETS 2 | 2005年 / 292卷

关键词：

river basin; Cameroon; soil degradation; erosion; suspended solids;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Suspended solids loads have been studied in six Cameroon rivers (basin areas of 1535-18 100 km(2)), having contrasting land cover ranging from wet tropical forest to savannah. Their specific solid transport ranges from 5 to 10 t km(-2) year(-1) for the wet forest to 180 t km(-2) year(-1) for the savannah, despite the markedly lower annual runoff from the savannah, 3.4 l s(-1) km(-2), cf. 68 l s(-1) km(-2) from the forest. In the savannah basin, a decrease of specific transport was also noted between 1968-1969 (214 t km(-2) year(-1)) and 2003 (180 t km(-2) year(-1)), and attributed to lower precipitation and anti-erosion techniques. Our study shows the importance of the protective land cover against erosion and the sensitivity of savannah basins to anthropogenic impacts.

引用

页码：291 / 298

页数：8

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