水資源總量 一定區(qū)域內(nèi)的水資源總量指當(dāng)?shù)亟邓�形成的地表和地下產(chǎn)水量，即地表徑流量與降水入滲補(bǔ)給量之和，不包括過(guò)境水量。

地表水資源量 指河流、湖泊、冰川等地表水體中由當(dāng)?shù)亟邓�形成的、可以逐年更新的�?dòng)態(tài)水量，即天然河川徑流量。

地下水資源量 指當(dāng)?shù)亟邓�和地表水�?duì)飽水巖土層的補(bǔ)給量。

地表水與地下水資源重復(fù)量 指地表水和地下水相互轉(zhuǎn)化的部分，即在河川徑流量中包括一部分地下水排泄量，地下水補(bǔ)給量中包括一部分來(lái)源于地表水的入滲量。

供水總量 指各種水源工程為用戶提供的包括輸水損失在內(nèi)的毛供水量。

用水總量 指分配給用戶的包括輸水損失在內(nèi)的毛用水量。按用戶特性分為農(nóng)業(yè)、工業(yè)、生活和生態(tài)用水四大類。

農(nóng)業(yè)用水 包括農(nóng)田灌溉和林牧漁業(yè)用水。林牧漁業(yè)用水指林果地灌溉、草地灌溉和魚塘補(bǔ)水。

工業(yè)用水 按新水取用量計(jì)，不包括企業(yè)內(nèi)部的重復(fù)利用水量。

生活用水 包括城鎮(zhèn)生活用水和農(nóng)村生活用水。城鎮(zhèn)生活用水由居民用水和公共用水（含服務(wù)業(yè)、商飲業(yè)、貨運(yùn)郵電業(yè)及建筑業(yè)等用水）組成；農(nóng)村生活用水除居民生活用水外，還包括畜用水在內(nèi)。

城鎮(zhèn)生活污水排放量 指城鎮(zhèn)居民每年排放的生活污水。用人均系數(shù)法測(cè)算。測(cè)算公式為：

城鎮(zhèn)生活污水排放量=城鎮(zhèn)生活污水排放系數(shù)×市鎮(zhèn)非農(nóng)業(yè)人口×365

城鎮(zhèn)生活污水中化學(xué)需氧量（COD）產(chǎn)生量 指城鎮(zhèn)居民每年排放的生活污水中的COD的產(chǎn)生量。用人均系數(shù)法測(cè)算。測(cè)算公式為：

城鎮(zhèn)生活污水中COD 產(chǎn)生量=城鎮(zhèn)生活污水中COD 產(chǎn)生系數(shù)×市鎮(zhèn)非農(nóng)業(yè)人口×365

化學(xué)需氧量（COD） 測(cè)量有機(jī)和無(wú)機(jī)物質(zhì)化學(xué)所消耗氧的質(zhì)量濃度的水污染指數(shù)。

工業(yè)固體廢物產(chǎn)生量 指報(bào)告期內(nèi)企業(yè)在生產(chǎn)過(guò)程中產(chǎn)生的固體狀、半固體狀和高濃度液體狀廢棄物的總量，包括危險(xiǎn)廢物、冶煉廢渣、粉煤灰、爐渣、煤矸石、尾礦、放射性廢物和其他廢物等；不包括礦山開采的剝離廢石和掘進(jìn)廢石(煤矸石和呈酸性或堿性的廢石除外)。酸性或堿性廢石指采掘的廢石其流經(jīng)水、雨淋水的pH值小于4或pH值大于10.5者。

危險(xiǎn)廢物 指列入國(guó)家危險(xiǎn)廢物名錄或根據(jù)國(guó)家規(guī)定的危險(xiǎn)廢物鑒別標(biāo)準(zhǔn)和鑒別方法認(rèn)定的，具有爆炸性、易燃性、易氧化性、毒性、腐蝕性、易傳染疾病等危險(xiǎn)特性之一的廢物。

工業(yè)固體廢物綜合利用量 指報(bào)告期內(nèi)企業(yè)通過(guò)回收、加工、循環(huán)、交換等方式，從固體廢物中提取或者使其轉(zhuǎn)化為可以利用的資源、能源和其他原材料的固體廢物量(包括當(dāng)年利用往年的工業(yè)固體廢物貯存量)，如用作農(nóng)業(yè)肥料、生產(chǎn)建筑材料、筑路等。綜合利用量由原產(chǎn)生固體廢物的單位統(tǒng)計(jì)。

工業(yè)固體廢物綜合利用率 指工業(yè)固體廢物綜合利用量占工業(yè)固體廢物產(chǎn)生量(包括綜合利用往年貯存量)的百分率。計(jì)算公式為：

工業(yè)固體廢物綜合利用率=工業(yè)固體廢物綜合利用量/（工業(yè)固體廢物產(chǎn)生量+綜合利用往年貯存量）×100%

工業(yè)固體廢物貯存量 指報(bào)告期內(nèi)企業(yè)以綜合利用或處置為目的，將固體廢物暫時(shí)貯存或堆存在專設(shè)的貯存設(shè)施或?qū)ＴO(shè)的集中堆存場(chǎng)所內(nèi)的數(shù)量。專設(shè)的固體廢物貯存場(chǎng)所或貯存設(shè)施必須有防擴(kuò)散、防流失、防滲漏、防止污染大氣、水體的措施。

工業(yè)固體廢物處置量 指報(bào)告期內(nèi)企業(yè)將固體廢物焚燒或者最終置于符合環(huán)境保護(hù)規(guī)定要求的場(chǎng)所，并不再回取的工業(yè)固體廢物量(包括當(dāng)年處置往年的工業(yè)固體廢物貯存量)。處置方式有填埋(其中危險(xiǎn)廢物應(yīng)安全填埋)、焚燒、專業(yè)貯存場(chǎng)(庫(kù))封場(chǎng)處理、深層灌注、回填礦井及海洋處置(經(jīng)海洋管理部門同意投海處置)等。

工業(yè)固體廢物排放量

指報(bào)告期內(nèi)企業(yè)將所產(chǎn)生的固體廢物排到固體廢物污染防治設(shè)施、場(chǎng)所以外的數(shù)量，不包括礦山開采的剝離廢石和掘進(jìn)廢石(煤矸石和呈酸性或堿性的廢石除外)。

生活垃圾清運(yùn)量 指報(bào)告期內(nèi)收集和運(yùn)送到垃圾處理廠(場(chǎng))的生活垃圾數(shù)量。生活垃圾指城市日常生活或?yàn)槌鞘腥粘Ｉ�活提供服�?wù)的活動(dòng)中產(chǎn)生的固體廢物以及法律行政規(guī)定的視為城市生活垃圾的固體廢物。包括：居民生活垃圾、商業(yè)垃圾、集市貿(mào)易市場(chǎng)垃圾、街道清掃垃圾、公共場(chǎng)所垃圾和機(jī)關(guān)、學(xué)校、廠礦等單位的生活垃圾。

生活垃圾無(wú)害化處理率 指報(bào)告期生活垃圾無(wú)害化處理量與生活垃圾產(chǎn)生量比率。在統(tǒng)計(jì)上，由于生活垃圾產(chǎn)生量不易取得，可用清運(yùn)量代替。計(jì)算公式為：

生活垃圾無(wú)害化處理率=生活垃圾無(wú)害化處理量/生活垃圾產(chǎn)生量×100%

環(huán)境污染治理投資 指在工業(yè)污染源治理和城市環(huán)境基礎(chǔ)設(shè)施建設(shè)的資金投入中，用于形成固定資產(chǎn)的資金。包括工業(yè)新老污染源治理工程投資、建設(shè)項(xiàng)目“三同時(shí)”環(huán)保投資，以及城市環(huán)境基礎(chǔ)設(shè)施建設(shè)所投入的資金。

Explanatory Notes on Main Statistical Indicators

Total Water Resources refers to total volume of water resources measured as run-off for surface water from rainfall and recharge for groundwater in a given area, excluding transit water.

Surface Water Resources refers to total renewable resources which exist in rivers, lakes, glaciers and other collectors from rainfall and are measured as run-off of rivers.

Groundwater Resources refers to replenishment of aquifers with rainfall and surface water.

Duplicated Measurement Between Surface Water and Groundwater refers to mutual exchange between surface water and groundwater, i.e. run-off of rivers includes some depletion with groundwater while groundwater includes some replenishment with surface water.

Water Supply refers to gross water supply by supply systems from sources to consumers, including losses during distribution.

Water Use refers to gross water use distributed to users, including loss during transportation, broken down with use by agriculture, industry, living consumption and biological protection.

Water Use by Agriculture includes uses of water by irrigation of farming fields and by forestry, animal husbandry and fishing. Water use by forestry, animal husbandry and fishing includes irrigation of forestry and orchards, irrigation of grassland and replenishment of fishing pools.

Water Use by Industry refers to new withdrawals of water, excluding reuse of water within enterprises.

Water Use by Living Consumption includes use of water for living consumption in both urban and rural areas. Urban water use by living consumption is composed of household use and public use (including services, commerce, restaurants, cargo transportation, posts, telecommunication and construction). Rural water use by living consumption includes both households and animals.

Urban Non-industrial Waste Water Discharge refers to annual discharge of non-industrial waste water by urban households. It is estimated by per capita coefficient using the formula:

Urban non-industrial waste water discharge = urban non-industrial waste water discharge coefficient urban non-agricultural population 365

Volume of Chemical Oxygen Demand (COD) Generated by Urban Non-industrial Waster Water refers to chemical oxygen demand generated through the annual discharge of non-industrial waste water by urban households. It is estimated as:

Volume of chemical oxygen demand (cod) generated by urban non-industrial waster water = Coefficient of COD generated through urban non-industrial waste water× urban non-agricultural population ×365

Chemical Oxygen Demand (COD) refers to index of water pollution measuring the mass concentration of oxygen consumed by the chemical breakdown of organic and inorganic matter.

Industrial Solid Wastes Produced refers to total volume of solid, semi-solid and high concentration liquid residues produced by industrial enterprises from production process in a given period of time, including hazardous wastes, slag, coal ash, gangue, tailings, radioactive residues and other wastes, but excluding stones stripped or dug out in mining (gangue and acid or alkaline stones not included). A stone is acid or alkaline depending on the pH value of the water below 4 or above 10.5 when the stone is in, or soaked by, the water.

Hazardous Wastes refers to those included in the national hazardous wastes catalogue or specified as any one of the following properties in the national hazardous wastes identification standards: explosive, ignitable, oxidizable, toxic, corrosive or liable to cause infectious diseases or lead to other dangers.

Industrial Solid Wastes Utilized refers to volume of solid wastes from which useful materials can be extracted or which can be converted into usable resources, energy or other materials by means of reclamation, processing, recycling and exchange (including utilizing in the year the stocks of industrial solid wastes of the previous year). Examples of such utilizations include fertilizers, building materials and road materials. The information shall be collected by the producing units of the wastes.

Ratio of Industrial Solid Wastes Utilized refers to the percentage of industrial solid wastes utilized over industrial solid wastes produced (including stocks of the previous years). It is calculated as:

Ratio of industrial solid wastes utilized = volume of industrial solid wastes utilized / (industrial solid wastes produced + stock of previous years) 100%

Stocks of Industrial Solid Wastes refers to volume of solid wastes placed in special facilities or special sites for purposes of utilization or disposal. The sites or facilities should take measures against dispersion, loss, seepage, and air and water contamination.

Industrial Solid Wastes Disposed refers to quantity of industrial solid wastes which are burnt or placed ultimately in the sites meeting the requirements for environmental protection and not salvaged or recycled (including disposition in the year of those wastes of previous years). The disposition includes landfill (Safe landfills should be conducted for hazardous wastes), incineration, containment spaces, deep underground disposal, backfill in mining pits and disposal at sea.

Industrial Solid Wastes Discharged refers to volume of industrial solid wastes discharged by producing enterprises to disposal facilities or to other sites. The wastes exclude stones stripped or dug from mining (gangue and acid or alkaline waste stones not included).

Consumption Wastes Transported refers to volume of consumption wastes collected and transported to disposal factories or sites. Consumption wastes are solid wastes produced from urban households or from service activities for urban households, and solid wastes regarded by laws and regulations as urban consumption wastes, including those from households, commercial activities, markets, cleaning of streets, public sites, offices, schools, factories, mining units and other sources.

Ratio of Consumption Wastes Treated refers to consumption wastes treated over that produced. In practical statistics, as it is difficult to estimate, the volume of consumption wastes produced is replaced with that transported. It is calculated as:

Ratio of consumption wastes treated = (consumption wastes treated / consumption wastes produced) ×100%

Investment in Environment Pollution Harnessing Projects refers to the proportion of investment in fixed assets in the total investment in harnessing industrial pollution and in the construction of urban environment infrastructure facilities. It includes investment in harnessing sources of industrial pollution, investment in environment protection facilities designed concurrently with construction projects, and investment in urban environment infrastructure facilities.