编辑“︁园艺”︁（章节）

==== 水 ====
農業及園藝產業是一個大量使用淡水的領域，總用水量為全球的70%<ref>{{Cite journal |last=Fischer |first=G |last2=Tubiello |first2=F |last3=van Velthuizen |first3=H |last4=Wiburg |first4=D |date=2010 |title=Climate change impacts on irrigation water requirements: effects of mitigation, 1990-2080 |journal= Technol Forecast Soc Change |language=en |volume=74 |page=1083-1107}}</ref>，且大多皆用於進行灌溉。然而，根據氣候變遷與全球人口增長的趨勢，在全球淡水需求量逐漸升高的同時，可用淡水量也正慢慢減少，<ref>{{Cite journal |last=Falloon |first=P |last2=Betts |first2=R |date=2010 |title=Climate Impacts on European Agriculture and Water Management in the Context of Adaptation and Mitigation—The Importance of an Integrated Approach |journal=Science of the Total Environment |language=en |volume=408 |page=5667-5687}}</ref>預計在2030年時，淡水的需求量與供給量將會有40%的差距<ref>{{Cite book|title=Agriculture and horticulture. Introducing energy saving opportunities for farmers and growers |author =Anon |publisher=The Carbon Trust|year=2012|location=London|language=en}}</ref>。因此，如何有效利用與減少水資源的汙染，將成為園藝產業的一大挑戰。<ref name=":3" />{{RP|505}}[[File:River algae Sichuan.jpg|thumb|[[富营养化|優養化]]之河川]]