Dajin Varzea

Dajin Varzea
	daji
Bayanai
Ƙaramin ɓangare na	daji
Ƙasa	Brazil, Kolombiya da Peru
Wuri
	2°18′S 54°54′W / 2.3°S 54.9°W

Dajin várzea wani dajin ne na lokaci-lokaci na ambaliya da kogunan farin ruwa suka mamaye da ke faruwa a cikin biome na Amazon.^[1]^[2] Har zuwa ƙarshen 1970s, ma'anar ba ta da kyau sosai kuma ana amfani da várzea ga duk dazuzzuka na Amazon na lokaci-lokaci.^[3]

Ko da yake wani lokacin ana kwatanta shi da ya ƙunshi dazuzzuka kawai, várzea kuma yana ƙunshe da ƙarin buɗaɗɗiya, wuraren da ambaliyar ruwa ta mamaye lokaci-lokaci kamar filayen ciyawa, gami da makiyaya masu iyo.^[4]^[5]

Bayyanawa

Tare da kogin Amazon da yawancin magudanan ruwa, yawan ruwan sama na shekara-shekara wanda ke faruwa mafi yawa a cikin lokacin damina yana haifar da yawan ambaliya na yanayi daga rafi da magudanar ruwa. Sakamakon shine hawan 10-15 m (33-49 ft) a matakin ruwa, tare da ruwa mai gina jiki.^[6]

Iquitos várzea ecoregion yana rufe iyakar Amazon na sama da kuma yankunanta. A ƙasa akwai Purus várzea a tsakiyar Amazon, Monte Alegre várzea da Gurupa várzea a kan ƙananan Amazon da Marajó várzea a bakin Amazon. Marajó várzea yana shafar ruwa mai daɗi da ruwa.^[7]

Ana iya raba gandun daji na Várzea zuwa kashi biyu: ƙananan várzea da várzea mai girma. Za a iya rarraba ƙananan dazuzzukan várzea ta ƙananan wuraren kwance inda rukunin ruwa na shekara yana da matsakaicin tsayi fiye da 3 m (10 ft), inda lokacin ambaliya ya fi kwanaki 50 a kowace shekara. An rarraba manyan dazuzzukan várzea a matsayin wuraren da matsakaicin ginshiƙin ruwa na shekara bai kai tsayin mita 3 (10 ft) ba kuma lokacin ambaliya bai wuce kwanaki 50 a shekara ba. Dazuzzukan várzea na Amazon suna cike da wadataccen abinci mai gina jiki, kogunan ruwan farin ruwa masu yawa kamar su Solimões-Amazon, Purus, da kogin Madeira. Wannan ya sa yankunan várzea suka bambanta da igapós, ambaliya daga ruwan baƙar fata mara kyau. Juyin yanayin ruwa wanda várzea ke fuskanta yana haifar da yanayi daban-daban na ruwa da na ƙasa a cikin shekara. Ruwan ruwan fari na Amazonian ya mamaye fili fiye da 300,000 km2 (120,000 sq mi), da gandun daji na várzea sun rufe kusan kilomita 180,000 (69,000 sq mi) na kwarin Amazon. 68% na kogin Amazonian yana cikin Brazil, tare da sauran wuraren da ke Bolivia, Colombia, Ecuador, French Guiana, Peru, Suriname, da Guyana.[6] várzea ta taso daga wannan kwandon sama zuwa cikin ƙasa kafin a kai ga gangara zuwa cikin dazuzzukan dazuzzuka.^[8]

Manazarta

↑ Parolin, P., L.V. Ferreira, A.L.K.M. Albernaz, & S. Almeida (2004). "Tree Species Distribution in Varzea Forests of Brazilian Amazonia". Folia Geobotanica. 39 (4): 371–383. doi:10.1007/bf02803209. S2CID 30470801.
↑ Pinedo-Vasquez, Miguel; Ruffino, Mauro L; Padoch, Christine; Brondízio, Eduardo S, eds. (2011). The Amazon Várzea. doi:10.1007/978-94-007-0146-5. ISBN 978-94-007-0145-8.
↑ Junk, Wolfgang J.; Piedade, Maria T. F.; Wittmann, Florian; Schöngart, Jochen; Parolin, Pia (27 September 2010). Amazonian Floodplain Forests: Ecophysiology, Biodiversity and Sustainable Management. Springer Science & Business Media. p. 15. ISBN 978-90-481-8725-6. Retrieved 17 March 2017.
↑ Jeffrey E. Richey; Allan H. Devol (1986). Emission of methane and other trace gases from the Amazon varzea (PDF) (Report). Seattle: School of Oceanography, University of Washington.
↑ van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 20. ISBN 978-0691170749.
↑ W.J. Junk; M.T.F. Piedade; J. Schongart; M. Cohn-Haft; J.M. Adney & F. Wittmann (2011). "A Classification of Major Naturally-Occurring Amazonian Lowland Wetlands". Wetlands. 31 (4): 623–640. doi:10.1007/s13157-011-0190-7. S2CID 36001397
↑ Sears, Robin, Seasonally flooded river basins of Brazil, Peru and Bolivia (NT0128), WWF: World Wildlife Fund, retrieved 2017-03-27
↑ Amazon Basin Ecoregions", Global Forest Atlas, Yale University, retrieved 2017-03-08

[1] Parolin, P., L.V. Ferreira, A.L.K.M. Albernaz, & S. Almeida (2004). "Tree Species Distribution in Varzea Forests of Brazilian Amazonia". Folia Geobotanica. 39 (4): 371–383. doi:10.1007/bf02803209. S2CID 30470801.

[2] Pinedo-Vasquez, Miguel; Ruffino, Mauro L; Padoch, Christine; Brondízio, Eduardo S, eds. (2011). The Amazon Várzea. doi:10.1007/978-94-007-0146-5. ISBN 978-94-007-0145-8.

[3] Junk, Wolfgang J.; Piedade, Maria T. F.; Wittmann, Florian; Schöngart, Jochen; Parolin, Pia (27 September 2010). Amazonian Floodplain Forests: Ecophysiology, Biodiversity and Sustainable Management. Springer Science & Business Media. p. 15. ISBN 978-90-481-8725-6. Retrieved 17 March 2017.

[4] Jeffrey E. Richey; Allan H. Devol (1986). Emission of methane and other trace gases from the Amazon varzea (PDF) (Report). Seattle: School of Oceanography, University of Washington.

[5] van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 20. ISBN 978-0691170749.

[6] W.J. Junk; M.T.F. Piedade; J. Schongart; M. Cohn-Haft; J.M. Adney & F. Wittmann (2011). "A Classification of Major Naturally-Occurring Amazonian Lowland Wetlands". Wetlands. 31 (4): 623–640. doi:10.1007/s13157-011-0190-7. S2CID 36001397

[7] Sears, Robin, Seasonally flooded river basins of Brazil, Peru and Bolivia (NT0128), WWF: World Wildlife Fund, retrieved 2017-03-27

[8] Amazon Basin Ecoregions", Global Forest Atlas, Yale University, retrieved 2017-03-08

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