— t “‡ore co2 will help trees row and c a will reen the ˆarth” p m t i u Hiher co2 concentrations directl increase plant rowth o b inorin other climate impacts‚! Howeer the biosphere s a n o is prošected to be seerel impacted b a chanin climate i t s possibl reducin its oerall capacit to absorb co2 from e u the atmosphere‚@ q — ’esearch shows that climate chane has oerall had a ne„ atie impact on crop ields # in part due to increased heat and water stresses $ and in part as a result of decreasin biodiersit‚% …his trend is prošected to continue with a ¬¡® net ield reduction for staple crops ›wheat rice maize and sobeanœ for eer 1°C temperature increase‚^ — “‰pportunities will open up in northern latitudes” s rctic ice melts the “orthwest ˆassae opens cuttin the shippin distance from sia to Europe b ¡ 000 ƒm‚ — “ew fossil reseres ma be recoerable in the rctic as the ice retreats but these will be expensie to exploit relatie to existin fossil reseres‚& — More arable land is liƒel to be aailable in ’ussia Canada and “orthern ‡nited States‚* Howeer decreases in aricultural land in the lobal south ( and Central merica will outweih increases in the lobal north’s aricultural iabilit creatin risƒs of food shortaes and international securit challenes‚!) 1 §imball 201Ÿ Ÿ ´hao et al‚ 201¡ 2 §örner 2000 ¡ Emmerson ¦ £ahn Schleussner et al‚ 2012 201— — ´abel et al‚ 201‘ ‘ £obell et al‚ 2011 ž ‹m et al‚ 201¡ ” ¢élaner ¦ ˆillin 10 nato, 215 201ž 2—
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