【道路长度】指道路长度和与道路相通的桥梁、隧道的长度，按车行道中心线计算。

【供水总量】指报告期供水企业（单位）供出的全部水量，包括有效供水量和漏损水量。有效供水量指水厂将水供出厂外后，各类用户实际使用到的水量，包括售水量和免费供水量。漏损水量指在供水过程中由于管道及附属设施破损而造成的漏水量、失窃水量以及水表失灵少计算的水量。

【售水量】指报告期供水企业(单位)收费供应的水量，只包括本地售水量，不包括销往本区域外的售水量。

【生产运营用水】指在城市范围内生产、运营的农、林、牧、渔业、工业、建筑业、交通运输业等单位在生产、运营过程中的用水。

【公共服务用水】指为城市社会公共生活服务的用水。包括行政事业单位、部队营区和公共设施服务、社会服务业、批发零售贸易业、旅馆饮食业以及社会服务业等单位的用水。

【居民家庭用水】指城市范围内所有居民家庭的日常生活用水。包括城市居民、农民家庭、公共供水站用水。

【绿地面积】指报告期末用作园林和绿化的各种绿地面积。包括公园绿地、生产绿地、防护绿地、附属绿地和其他绿地的面积。

【公园绿地面积】指城市中向公众开放的、以游憩为主要功能，有一定的游憩设施和服务设施，同时兼有健全生态、美化景观、防灾减灾等综合作用的绿化用地。它是城市建设用地、城市绿地系统和城市市政公用设施的重要组成部分。

【Length of Roads】refers to the length of roads and of the bridges and tunnels connected to the roads, calculated by the center line of the roads.

【Annual Volume of Water Supply】refers to the total volume of water supplied by water-works(units) during the reference period, including both the effective water supply and loss during the water supply.

【Volume of Sold Water】refers to the total volume of paid water supplied by water-works(units) during the reference period, only including the volume of paid water sold to local region, not including the volume of paid water sold to other regions.

【Volume of Water for Production】refers to water consumption for urban production of enterprises of farming, forestry, animal husbandry and fishery, industry, construction, transport, and so on.

【Water Consumption of Public Service】refers to water consumption for urban public services, including the consumption of government agencies and public institutions. Military barracks, public facilities, wholesale and retail outlets, restaurants, hotels, and other units providing public services.

【Household Water Consumption】refers to consumption of water for daily life of all households within the boundary of cities, including water consumption of urban residents and farmers, and public water supply stations.

【Area of Urban Greenbelt】refers to the total area occupied for green projects at the end of the reference period, including park green land, production green land, protection green land, green land attached to institutions, and other greenbelt.

【Park Green Areas】refers to green areas open to the public for amusement and rest with the facilities of amusement, rest and services, Its function includes perfecting ecology, beautifying landscape, and preventing and reducing disaster. It is an important component of urban construction sites, urban green area system and public facilities in urban districts.