| 词条 | Nairobi River |
| 释义 |
The main stream, Nairobi River, bounds the northern city centre, where it is partly canalized. TributariesNairobi River has several tributaries, including (in descending order from north to south):
Motoine River flows to the Nairobi Dam, an artificial lake meant to provide drinkable water for residents of Nairobi. Further onwards the stream continues as Ngong River. Gathara-ini Stream [3] originates in marshes in the lower reaches of Aberdare mountains and flows through human settled areas. The stream experiences different impacts originating from anthropogenic sources along the channels and in the catchment. In the upper sections of Kiambaa and Kanunga areas, the stream passes through swampy and marshy areas, with subsistence agriculture and human settlement being the main types of land use. In midsections of Kiambu, extensive coffee estates and intensive mixed farming are the major forms of land use. In the lower sections of Githurai and Zimmerman, the stream is characterized by coffee farming, intensive mixed farming and some industries such as Kamiti Tannery Factory. The lower stream waters are brackish and characterised by foul smell. Riverine subsistence agriculture of arrowroots and kales were common throughout the studied area. Efforts to conserve and preserve this river are yet to be initiated. Nairobi's rivers suffer from contaminations by agriculture, slums and industrial areas.[4][5] During rainy seasons the discharge tends to multiply, causing floods on low-lying riverbanks. There is a second river called Nairobi in Kenya. It starts on Mount Kenya and is a tributary of the Sagana and then the Tana, the longest river in Kenya.[6] See also
References1. ^Ndiritu, G. G., N. N. Gichuki, P. Kaur and L. Triest. 2003. Characterization of environmental gradients using physico-chemical measurements and diatom densities in Nairobi River, Kenya. Aquatic Ecosystem Health & Management, 6 (3): 343-354. 2. ^http://www.unep.org/urban_environment/PDFs/ISWMLaunch_NairobiRiverBasin.pdf 3. ^Ndaruga, A. M., G. G. Ndiritu, N. N. Gichuki and W. N. Wamicha.N. 2004. Impact of water quality changes on riverine macroinvertebrate assemblages along a tropical stream, Kenya. African Journal of Ecology 42: 208-216 4. ^Biosafety News, October/November 2002 5. ^Ndiritu, G. G., N. N. Gichuki and L. Triest. 2006. Distribution of epilithic diatoms in response to environmental conditions in an urban tropical stream, Central Kenya. Biodiversity and conservation 15:3267-3293 6. ^{{cite map| publisher = Rough Guide| title = Rough Guide Map Kenya| edition = 9| year = 2006| cartography = World Mapping Project| scale = 1:900,000| series = Rough Guide Map| isbn = 1-84353-359-6}} External links
3 : Rivers of Kenya|Nairobi|Athi-Galana-Sabaki River |
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