| environ. | pollution sink Vehicle for removal of a chemical or gas from the atmosphere-biosphere-ocean system, in which the substance is absorbed into a permanent or semi-permanent repository, or else transformed into another substance. A carbon sink, for example, might be the ocean (which absorbs and holds carbon from other parts of carbon cycle) or photosynthesis (which converts atmospheric carbon into plant material). Sinks are a fundamental factor in the ongoing balance which determines the concentration of every greenhouse gas in the atmosphere. If the sink is greater than the sources of a gas, its concentration in the atmosphere will decrease; if the source is greater than the sink, the concentration will increase | 污染汇集地 (通过车辆运输将化学制品或气体从大气生物圈-海洋系统中移除，物质被吸收入永久或部分永久的贮藏库，或者被转换成另一种物质。例如碳水槽，是海洋中吸收并且与碳循环的其它部分反应，(或将大气碳转换成植物材料)的光合作用。水槽是在确定的温室气体中，保持大气平衡的一个根本因素。如果水槽的容积比气体的来源更大，它获得的大气浓度将减少；如果大气来源体积比水槽更大，则大气浓度将增加。) |
