《重庆市绿色生态住宅小区建设技术规程》规定,生态住宅小区不仅绿地率要达标,其能源系统、空气环境、声环境、水环境等方面都有严格要求。空气质量要达到二级空气标准为宜;小区内容积率应小于1.7,高层建筑的建筑密度应低于25%,多层建筑则低于30%;机动车停车位平均每户不少于1 The “Technical Regulations for Construction of Green and Ecological Residential Areas in Chongqing” stipulate that not only the rate of green spaces in ecological residential communities should be up to standard, but also the strict requirements on energy system, air environment, acoustic environment and water environment. Air quality should meet the secondary air standard is appropriate; plot area volume rate should be less than 1.7, high-rise building construction density should be less than 25%, multi-storey building is less than 30%; vehicle parking average household not less than 1