Gurbataccen yanayi

Gurbataccen yanayi
Bayanai
Ƙaramin ɓangare na	Gurɓacewa

Madogarar da ba ta da ma'ana (NPS) gurbacewar yanayi, tana nufin gurɓacewar ruwa (ko ƙazanta) na ruwa ko iska da ba ta samo asali daga tushe guda ɗaya ba. Irin wannan gurɓacewar sau da yawa shi ne sakamakon tarawa na ƙananan gurɓatattun abubuwa da aka tattara daga babban yanki. Ya bambanta da gurɓacewar yanayi wanda ke fitowa daga tushe guda. Rashin gurɓataccen tushe gabaɗaya yana haifar da kwararar ƙasa, hazo, ajiyar yanayi, magudanar ruwa, ruwan ruwa, ko gyare-gyaren ruwa (ruwan sama da dusar ƙanƙara) inda gano gurɓatacciyar ƙasa zuwa tushe guda yana da wahala. Gurɓacewar ruwan da ba ta da tushe tana shafar jikin ruwa daga tushe kamar gurbataccen ruwa daga wuraren noma da ke zubewa cikin kogi, ko tarkacen iska da ke kadawa zuwa teku. Gurɓacewar iska ta hanyar da ba ta da tushe tana shafar ingancin iska, daga tushe kamar rumbun hayaƙi ko bututun wutsiya na mota. Ko da yake waɗannan gurɓatattun abubuwan sun samo asali ne daga maɓuɓɓugar ruwa, ƙarfin jigilar dogon zango da maɓuɓɓuka masu yawa na gurɓataccen yanayi sun sa ya zama tushen gurɓatawar da ba ta dace ba; idan fitar da ruwa ya kasance a cikin ruwa ko cikin sararin samaniya a wuri guda, gurɓatar yanayi zai zama wuri guda Ko ɗaya.

Gurɓacewar ruwa mara tushe na iya samuwa daga wurare daban-daban ba tare da takamaiman mafita ko canje-canje don gyara matsalar ba, yana kuma mai da wahala a dai-daita shi. Rashin gurɓatar ruwa daga tushe yana da wuyar sarrafawa saboda yana fitowa daga ayyukan yau da kullun na mutane daban-daban, kamar takin lawn, amfani da magungunan kashe qwari, gina hanya ko ginin gini . Sarrafa gurɓacewar yanayi mara tushe yana buƙatar inganta ayyukan birane da kewayen birni, ayyukan noma, ayyukan gandun daji da marinas.

Types of nonpoint source water pollution include sediment, nutrients, toxic contaminants and chemicals and pathogens. Principal sources of nonpoint source water pollution include: urban and suburban areas, agricultural operations, atmospheric inputs, highway runoff, forestry and mining operations, marinas and boating activities. In urban areas, contaminated storm water washed off of parking lots, roads and highways, called urban runoff, is usually included under the category of non-point sources (it can become a point source if it is channeled into storm drain systems and discharged through pipes to local surface waters). In agriculture, the leaching out of nitrogen compounds from fertilized agricultural lands is a nonpoint source water pollution.^[1] Nutrient runoff in storm water from "sheet flow" over an agricultural field or a forest are also examples of non-point source pollution. Samfuri:TOC limit

1. ↑ Moss, Brian (2008). "Water Pollution by Agriculture". Phil. Trans. R. Soc. Lond. B. 363 (1491): 659–666. doi:10.1098/rstb.2007.2176. PMC 2610176. PMID 17666391.