Global warming is predicted to induce desiccation in many world regions through increases in evaporative demand. Rising CO2 may counter that trend by improving plant water-use efficiency. However, it is not clear how important this CO2-enhanced water use efficiency might be in offsetting warming-induced desiccation because higher CO2 also leads to higher plant biomass, and therefore greater transpirational surface. Furthermore, although warming is predicted to favour warm-season, C4 grasses, rising CO2 should favour C3, or cool-season plants.
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/c4-grasses-prosper-carbon-dioxide-eliminates-desiccation-warmed-semi-arid-grassland
[2] http://admin.indiaenvironmentportal.org.in/category/author/jack-morgan
[3] http://admin.indiaenvironmentportal.org.in/category/author/daniel-r-lecain
[4] http://admin.indiaenvironmentportal.org.in/category/author/elise-pendall-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/grasslands
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/grasses
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-science
