Phosphorus (P) ndi imodzi mwazinthu zofunika kwambiri ndi zinthu zachilengedwe, chifukwa ndi gawo limodzi la ma acid acid ndi zinthu zina zomwe zimakhudzidwa ndi njira zamagetsi zamagetsi. Kulephera kwa phosphorous kumabweretsa kuchepa kwa zokolola za thupi. Pakufalikira kwa chinthuchi m'chilengedwe, zinthu zonse zomwe zili ndizomwe zimasungunuka pang'ono, kapena sizisungunuka. Zida zokhazikika kwambiri ndi magnesium ndi calcium orthophosphates. Mu mayankho ena, amasandulika kukhala dihydrogen phosphates, omwe amalowetsedwa ndi zomera. Chotsatira chake, mankhwala okhala ndi phosphorous opangidwa kuchokera ku phosphates wamba.
Kapangidwe ndi kayendedwe ka P
M'chilengedwe, phosphorous imapezeka m'miyala ina yomwe imachitika m'matumbo a Dziko lapansi. Kuzungulira kwa chinthuchi mwachilengedwe kumatha kugawidwa m'magulu awiri:
- terrestrial - imayamba miyala yomwe ili ndi P ikafika pamwamba, pomwe imawombedwa;
- madzi - chinthucho chimalowa m'nyanja, gawo limakhudzidwa ndi nthumwi za phytoplankton, zomwe zimadyanso mbalame zam'nyanja ndikuzitulutsa pamodzi ndi zinyalala zawo.
Gawo la ndowe ya mbalame, yomwe ili ndi P, imathera kumtunda, ndipo amatha kutsukidwa munyanja, momwe zonse zimapitilira mozungulira. Komanso, phosphorous imalowa m'malo amadzi kudzera kuwola kwa matupi anyama zam'madzi. Mafupa ena a nsomba amakhala pansi pa nyanja, amadzikundikira ndikusandulika miyala.
Kugwiritsa ntchito phosphorous m'madzi okwanira kumabweretsa zotsatirazi:
- kuchuluka kwa mbeu m'malo amadzi;
- maluwa a mitsinje, nyanja ndi madzi ena;
- kutulutsa mawu.
Zinthu zomwe zili ndi phosphorous ndipo zili pamtunda zimalowa m'nthaka. Mizu yazomera imayamwa P limodzi ndi zinthu zina. Udzu, mitengo, ndi tchire zikafa, phosphorousyo imabwerera pansi ija. Imatayika panthaka kukokoloka kwa madzi kumachitika. M'nthaka zomwe zili ndi P zambiri, motsogozedwa ndi zinthu zosiyanasiyana, apatites ndi phosphorites amapangidwa. Chowonjezera padera la P chimapangidwa ndi anthu omwe amagwiritsa ntchito feteleza wa phosphorous ndi mankhwala apanyumba omwe ali ndi R.
Chifukwa chake, kuzungulira kwa phosphorous m'chilengedwe ndimachitidwe ataliatali. Nthawi yonseyi, chinthucho chimalowa m'madzi ndi padziko lapansi, chimadzaza nyama ndi zomera zomwe zimakhala padziko lapansi komanso m'madzi, komanso zimalowa m'thupi la munthu mumlingo winawake.
