Nsonaazụ mba na-egosi na mkpuchi osisi n'ime obodo mepere emepe nke United States na-agbada n'ọ̀tụ̀tụ̀ dị ihe dị ka nde osisi anọ kwa afọ, dị ka nnyocha e mere na-ahụ maka ọrụ ọhịa nke United States bipụtara n'oge na-adịbeghị anya na Urban Forestry & Urban Greening.
Mkpuchi osisi dị na 17 n'ime obodo 20 a nyochara n'ọmụmụ ihe ahụ jụrụ ebe obodo 16 hụrụ mmụba na mkpuchi na-adịghị mma, nke gụnyere pavement na elu ụlọ. Ala osisi furu efu na-agbanwekarị ka ọ bụrụ ahịhịa ma ọ bụ ihe mkpuchi ala, ihe mkpuchi na-adịghị mma ma ọ bụ ala tọgbọrọ chakoo.
N'ime obodo 20 a nyochara, ọnụ ọgụgụ kasị ukwuu nke ọnwụ kwa afọ na mkpuchi osisi mere na New Orleans, Houston na Albuquerque. Ndị na-eme nchọpụta na-atụ anya ịhụ mfu osisi dị egwu na New Orleans wee kwuo na ọ ga-abụ n'ihi mbibi nke Hurricane Katrina na 2005. Ihe mkpuchi osisi sitere na elu nke 53.9 pasent na Atlanta ruo na ala nke 9.6 pasent na Denver mgbe ngụkọta nke na-adịghị agwụ agwụ dị iche site na 61.1 pasent na New York City ruo pasent 17.7 na Nashville. Obodo ndị nwere nnukwu mmụba kwa afọ na mkpuchi na-adịghị agwụ agwụ bụ Los Angeles, Houston na Albuquerque.
"Oké ọhịa anyị mepere emepe nọ ná nrụgide, ọ ga-ewekwa anyị nile ịrụkọ ọrụ ọnụ iji kwalite ahụ ike nke oghere akwụkwọ ndụ akwụkwọ ndụ ndị a dị mkpa," Onye isi ndị na-ahụ maka oke ọhịa nke United States Tom Tidwell kwuru. "Ndị otu obodo na ndị na-eme atụmatụ ime obodo nwere ike iji i-Tree nyochaa mkpuchi osisi nke ha, ma chọpụta ụdị kachasị mma na ebe ịkụ ihe na mpaghara ha. Ọ bụghị akaha iji weghachi ọhịa anyị mepere emepe - oge bụ ugbu a iji tụgharịa nke a. "
Uru ndị a na-enweta site na osisi ndị mepere emepe na-enye nloghachi okpukpu atọ karịa ụgwọ nlekọta osisi, ihe ruru $2,500 na ọrụ gburugburu ebe obibi dị ka mbelata ego ọkụ na oyi na-atụ n'oge ndụ osisi.
Ndị na-eme nchọpụta ọhịa David Nowak na Eric Greenfield nke US Forest Service's Northern Research Station jiri onyonyo satịlaịtị chọpụta na mkpuchi osisi na-agbada n'ihe dịka 0.27 pasent nke ala kwa afọ na obodo US, nke ya na ihe dịka 0.9 pasent nke mkpuchi osisi obodo mepere emepe na-efu kwa afọ.
Ntụgharị nkọwa foto nke onyonyo dijitalụ jikọtara ọnụ na-enye ụzọ dị mfe, ngwa ngwa na ọnụ ala iji chọpụta mgbanwe n'etiti ụdị mkpuchi dị iche iche. Iji nyere aka n'ịkọwa ụdị mkpuchi dị n'ime mpaghara, ngwá ọrụ efu, i-Osisi Canopy, na-enye ndị ọrụ ohere iji foto Google kọwaa obodo foto.
"Osisi bụ akụkụ dị mkpa nke obodo mepere emepe," ka Michael T. Rains, onye isi ụlọ ọrụ nyocha nke Northern si kwuo. "Ha na-ekere òkè n'ịkwalite ikuku na mmiri ma na-enye ọtụtụ uru gburugburu ebe obibi na ọha mmadụ. Dị ka onye isi ọrụ ọhịa anyị na-ekwu, '…Osisi ndị mepere emepe bụ osisi kacha sie ike na America.' Nchọpụta a bụ nnukwu ihe enyemaka maka obodo niile dị na mba ahụ. "
Nowak na Greenfield mechachara nyocha abụọ, otu maka obodo 20 ahọpụtara na nke ọzọ maka mpaghara obodo mepere emepe, site n'ịtụle ọdịiche dị n'etiti foto ikuku dijitalụ kacha ọhụrụ enwere ike yana onyonyo mkpakọrịta nwoke na nwanyị dị nso dịka o kwere mee afọ ise tupu ụbọchị ahụ. Ụzọ na-agbanwe agbanwe mana ụbọchị onyonyo na ụdị dị iche n'etiti nyocha abụọ ahụ.
"Ọnwụ mkpuchi osisi ga-adị elu ma ọ bụrụ na ọ bụghị maka mgbalị ịkụ osisi ndị obodo mere n'ime afọ ole na ole gara aga," ka Nowak si kwuo. "Mgbasa ịkụ osisi na-enyere aka ịbawanye, ma ọ bụ opekata mpe, belata mfu nke mkpuchi osisi obodo, mana ịmegharị usoro ahụ nwere ike ịchọ mmemme zuru ebe niile, nke zuru oke na nke jikọtara ọnụ nke na-elekwasị anya n'ịkwado oke osisi niile."