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化学药品 > 溶解氧

Preferred term

溶解氧

溶解在溪流、河水或湖泊中的氧气浓度，可作为河川的健康程度和维持水生态系平衡能力的指标。水中溶氧来自于大气的溶解和水生植物的光合作用。河川水体所能维持的最大氧气浓度﹐称之为饱和溶氧量﹐其值与温度有关；温度愈高，水中饱和溶氧量愈低。当有机废弃物排入河川，会导致河川的需氧量增加；而过量的有机物进入水体时，微生物氧化这些有机物所消耗的氧量远快于氧气补充入水的速率，一旦氧气被消耗殆尽，会导致较高等生物的死亡。

化学药品

http://www.eionet.europa.eu/gemet/theme/6 (gemet)

CHEMISTRY, SUBSTANCES, PROCESSES (en)
gemet:groupCollection (gemet)
gemet:superGroupCollection (gemet)
HUMAN ACTIVITIES AND PRODUCTS, EFFECTS ON THE ENVIRONMENT (en)

URI

http://www.eionet.europa.eu/gemet/concept/11788

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